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Group Title: Florida. University, Gainesville. State Museum. Bulletin. Biological sciences
Title: Subfamilies, genera, and species of Phytoseiidae (Acarina Mesotigmata)
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Permanent Link: http://ufdc.ufl.edu/UF00001504/00001
 Material Information
Title: Subfamilies, genera, and species of Phytoseiidae (Acarina Mesotigmata)
Series Title: Florida. University, Gainesville. State Museum. Bulletin. Biological sciences
Physical Description: 268-302 p. : illus. ; 23 cm.
Language: English
Creator: Muma, Martin H ( Martin Hammond ), 1916-
Publisher: University of Florida
Place of Publication: Gainesville
Publication Date: 1961
 Subjects
Subject: Phytoseiidae   ( lcsh )
Genre: bibliography   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Bibliography: Bibliography: p. 300-302.
 Record Information
Bibliographic ID: UF00001504
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: ltqf - AAA0812
notis - ACK0934
alephbibnum - 000440468
oclc - 05069577
lccn - a 62009716

Table of Contents
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    Main
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Full Text




BULLET


OF THE

FLORIDA STATE MUSEUM


BIOLOGICAL


SCIENCES


VOLUME 5


UNIVERSITY


OF FLORIDA


Gainesville


1959-1961
















XNumbeur of the BULLETIN OF THF. F1ORIDA STATE MUSEUM are pub-
lished at regular intervals. Voulmne contann about 300 pages and are not nec
essarily completed in any one cnalcrdil yc~.











WIULLAM J. RIEMEm Aanaging Editor
OLIVEn L. AvrsN, JH., Editor










Communications conccning pincaihase or exchange of the pubhcation and all man-
uscripts should be addressed to the Managing Editor of I,' Bull.e.i, Florida State
Museum, Scagle Building Gamesville, Flrida,


Publication dtle

No 1 3 September 1959

No 2 11 November 1959....

No. 3 27 January 1960

No. 4 14 June 1960

No. 5 17 AuguLs 1900 -...-....-

No. 6 21 Octnbel 1960

No 7 9 Ma) 1961


Price

$0 43

............ .35

,2

280













TABLE OF CONTENTS


Birds and Mammals from the Pleistocene of Williston, Florida
J. ALAN HOLMAN ........... 1



A Bilaterally Cyn[aidromorphic Hypodynerus, and a Summary
of Cytologic Origins of such Mosaic Hymenoptera. Biol-
ogy of Eumenine Wasps, VI. KENNETH W. COOPFR 25

How Many Species of Birds Have Existed? PIERCE BRODKORB 41




Middle-American Poeciliid Fishes of the Genus Xiphophorus.
DONN E RE .. ... 57



Pattern Variation in the Frog Eleutherodactylus nubicola Dunn.
COLEMAN J. Gox .... 243



Color Pattern Variation among Snails of the Genn Liguus
on the Florida Keys. FRANK N. YOUNG. . . 259



Subfamilics, Genera, and Species of Phytoseiidae
(Acarina: Mesostigmata). MARIN H. MI-MA 267








BULLET


OF THE


FLORIDA STATE MUSEUM


BIOLOGICAL SCIENCES


I Volume 5


SUBFAMILIES,


Number 7


GENERA, AND SPECIES OF


PHYTOSEIIDAE (ACARINA; MESOSTIGMATA)

Martin H. Muma


UNIVERSITY OF FLORIDA
Gainesville
1961










SUBFAMILIES, GENERA, AND SPECIES OF PHYTOSEIIDAE
(ACARINA: MESOSTIGMATA)

MARTIN H. MUMA

SYNOPSIS: The subfamilies and genera of Phytoseiidae are re-evaluated on
the basis of combined stable criteria of dorsal sental form, dorsal scutal station,
scapular station, sternal form, sternal station and the macrosetae of leg TV.
Four subfamilies are recognized, two of them new. Of the 43 genera diagnosed,
10 were previously recognized, 3 previously synonymized, I is elevated from a
subgenus, and 29 are new. Nine new species are described and figured. Alto-
gether 187 species are cited.
Many systematic studies have been conducted on this important
family of predatory mites during the past 10 years. More than 180
species are now known, and the present high rate of species discovery
indicates that this number may be doubled during the next decade.
Two important recent reviews have been published (Nesbitt, 1951
and Chant, 1959). Several generic and local faunal studies have also
appeared. Notable among these are Evans (1958), Chant (1955-1957),
Athias-Henriot (1957-1958), Womersley (1954), Carman (1958), Cun-
liffe and Baker (1953), Wainstein (1958-1959), DeLeon (1957-1959),
McGregor (1956), Kennett (1958), and Muma (1955).
Recent opinions differ on the supraspecific classification of these
mites. Chant (1959) used setal form and ornamentation for generic
separation, recognized the subfamilial importance of a divided dorsal
scutum, and agreed with Evans (1954) on the generic criteria of a
sclerotized interscutal membrane and a fragmented ventrianal scutum.
Athias-Henriot (1957-1958) placed great value in the generic signifi-
cance of setal number and position on the dorsal scutum and devel-
oped a rather complex system of setal citation. Garman (1958) used
sternal and ventrianal proportions and ornamentation as generic cri-
teria. DeLeon based a genus (1959c) on an incomplete ventrianal
scutum, and genera and subgenera (1959a, 1959d) on the length
and ornamentation of dorsal scutal setae. Muma (1955) also based
genera on the length of dorsal scutal setae and on the proportions and
station of the ventrianal scutum.

Martin Muma holds the title Entomologist at the University of Florida Citrus
Experiment Station, Lake Alfred, Florida. He is presently engaged in biological
control studies on predators and parasites of insects and mites injurious to citrus
in Florida. He is also interested in the taxonomy and biology of mites associated
with citrus and of Arachnida, particularly Solpugida and Araneida. This paper is
No. 1124 in the Florida Agricultural Experiment Station Journal Series. Manu-
script submitted 19 September 1960.-ED.








268 BULLETIN FLORIDA STATE MUSEUM Vol 5

As a result the subfamilial, generic, and subgeneric classification
of the family is confused, and species placement is difficult. Inade-
quate descriptions and incorrect placements occur in almost every
taxonomic paper published in the last 10 years.
The subfamilial and generic classification proposed below is based
on a careful re-examination of many characters, some previously used,
others recently recognized. The author realizes that the erection of
numerous monotypic and small genera, forseen by Chant (1959), will
arouse indignation and consternation. Yet the splitting of large, un-
wieldly. loosely conceived genera often furthers rather than defeats
the purpose of systemaatics.
Morphologic, supraspecific classification is dependent on the in-
terspecific stability of the structures it is based on. In the Phytoscii-
(ae, asuch sl ability occurs inl the form and setaton of the dorsal sculuam,
in the number and position of setae in the scapular region, in the form
and setation of the sternum, and in the development of elongate or
otherwise modified setae on the genu, tibia, and tarsus of the 4th leg.
Form of the dorsal scutinn is ahnost fixed. With a single exception
it is entire or undivided and varies only in proportionate length to
width from elongate oval to olovate. Chant, Denmark, and Baker
(1959) recognized this stability and established the subfamily Macro-
seiinae for a species with a divided dorsal scutum.
Station of the dorsal scutum is somewhat more variable, but still
remarkably constant. Most phytoseiids have 6 pairs of setae in the
so-called dorsal (1)) series. Scarcely two dozen species possess only
5 pairs (Amblyseiuhlse, Amblyseivuella, Phytoseiulus, Phytoseiviella
Proprioseiopsis, Proprioseius, Asperoseius), two have 4 pairs (Phyto-
scutus, Phytoscutella) and only one has 7 (Macroseius). Variation in
the number of dorsal setae has been used to separate and to associate
species, but has not been recognized as a stable, generically signifi
cant character. Median setae exhibit the same order of stability as
dorsal setae. Most phytoseiids possess 2 distinguishable pairs of me-
dian (M) setae (e.g., Typhlodromus in the broad sense, Typhlosaiopsis
Asperoseius, Proprioseius, Anthoseius) or 3 distinguishable pairs (e.g.,
Armblyseius. Armblyseiella, Phyllodrormus). Nine species (Phytoseius,
Dubininellus, Phytoseiulus, Platysiella, and Aceodromus) have 1
pair of distinguishable median setac and two species (Typhloseius,
Typhloseiella) have 4 pairs. Lateral (L) setae on the dorsal scutum
are variable, but also exhibit numerical stability in certain aspects.

SAuthoritiie for, or status of all subiamlhcs and gcncra oi Phytosendac arc
given in table 1.








Ml ULA PIITI(Y'SEID MITES


Chant (1957a) noted stability of the so-called anterior lateral setae in
Typhlodromus, in tie broad sense, and proposed the subgenus Typih-
lodromus for those species with more than 4 anterior laterals and the
subgenus Amblysius for those with 4 anterior laterals. No particular
generic significance has been placed on the fact that all except 11
known phytoseiids (11 Typhlodromnus, in the broad sense, have 6) have
4 or 5 pairs of lateral setae anterior to the 4th pair of dorsal setae,
and that many closely related species share a uniform number and
distribution of lateral setae posterior to Dr. Variations in station
of the dorsal scuturri ;re believed significant at the generic level.
The number of scapular (S) setae is almost as stable as the form
of the dorsal scutum. With a single exception all phytoseiids have 1
or 2 pairs of scapular sclae. The generic significance of this stability
has been largely overlooked except by Wainstein (1959) in establish-
ing his subgenus Dubininellus. A new subfamily Aceodrominae and
genus Aceodromus are described below for a species with 8 pairs of
scapular setae. A normal number of scapular setae (1 or 2) and posi-
tion of S, are also considered generically diagnostic.
Acarologists have recognized the sternum as fundamental and
stable enough for the establishment of several families of mesostig-
matid mites Within the family Phytoseiidae, however, only one or
two workers have considered sternal variation to be of more than
specific importance. Only three variations of phytoseiid sterna are
known, the proportion of length to width, the occurrence of 2 or 3
pairs of sternal setae, and the presence or absence of sculpturing or
retienlate markings. These variations are certainly significant at the
generic and subgeneric level.
Finally the number and form of the so-called macrosetae on the
dorsal surface ot the genu, tibia, and tarsus of the 4th leg exhibit some
degree of stability. For example, species of Amblyseivs always have
a distinguishable elongate macroseta on each of the named segments,
whereas species of Neoseiuhas have none. Macrosetal variability is,
however, too great for reliability on this character alone. Several
genera (Cydtodromus, Galendromus, alnd Typhlodromiia) have a sin-
gle flne macroseta on the basitarsus of the 4th leg of some species,
and no distinguishable macroseta on other closely related species.
Short hooked "macrosetae" are present in some genera (Phytoscutus,
Claaidromina), whereas others (Amblyseins, Clavidromrns) have the
macrosetae knobbed on certain species.
Ih the following keys and diagnoses, combinations of these stable
fundamental characters are used to recognize, segregate. and associate
the several subfamilies and genera. Form and ornamentation of the








BULLETIN FLORIDA STATE MUSEUM


setae on the dorsal scutum, with the exception of the posterior medians
and latelals, and lorm and station of the ventrianal scuturn arc used
only as supporting or subgeneric characters, owing to their extrerie
variability.
The modified Canman system of setal designation used by most
workers is followed, except in the case of median setae. In this study,
save for Mi, that pair of setae forming the cctal angles of the so-
called "dorsal hexagonal area;' no number is assigned to median setac
If a pair of setae on the posterior third of the body, M2 of authors,
lies mesad to marginal lateral setac, it is considered median; if mar-
ginal lateral setae are not present (Asperoseius, Phytoseius, Duhininel-
sls, Phytoseiulus) it is considered lateral. It a pair of setac on the
middle tlird of the dorsal scutum, L, of authors, lies distinctly mesad
to a pair of marginal lateral setae, it is considered median; if only one
pair of setae is present or it is not distinctly mesad it is considered
lateral. All characters cited in this study refer to the female; data on
males are incomplete foi many species.
Except for the necessary literature citations dealing directly with
subfamily, genus, or generotype descriptions, the usual systematic ci
stations of species descriptions are omitted. Chant's (1959) excellent
review of the family cites most of the historic literature and gives
adequate descriptions, illustrations, and literature citations for most
species through 1959. One or two recent papers not discussed by
Chant are cited here.
I'ABLE I
SUBFsrLIES AND GENERA OF PHYTOSFI.nDA WITH DnTCNOSTIC FORMULA

DiagnoiloeL forimulaj
D M L S St Pa Mac

Macroseinnae Chant, Denmark, Baker
Macroseus Chant, Denmark, Baker 7 3 8 2 3 1
Aceodrommnae new subfainly
AceodrIWmus nei genus 5 1 11 8 3 3 6
Amhlysehnac now subfamily
Phytosscutu new genus 4 2 8 2 3 3 3
Phvtrscwutella new gcaus 4 3 8 2 3 3 3
Phetoseiflur Evans 5 1 8 2 3 0-1 1-2
PruopriFhius Chant 5 1 8 2 3 3 0-1
P'htuoselulella new senus 5 2 7 2 3 3 3
Amiblyseisuela new genuis 5 2 7 2 3 3 3
Proproseiopsirs new genus 5 2 8 2 3 3 3

[Continmed]


Vol. 5









1961 MUMA' IIY OSEIID IT'FS 271

TABLE 1 (Cointlmind)

Diagnosutir foouiuL'
D M L S St Pa Mac

Aspeisneis Chant 5 2 7 2 8 3 0
Amblseliulus new genus 3 3 8 2 3 3 3
Plit/seiella new genus 6 I 7 1 .3 3
Ambhistcuses new genus 6 2 7 1 3 3 3
Cydnodrmiella new genus 6 2 8 1 3 4 0
Paradromus new genus 6 3 7 1 3 3 0
Amblseselllas Muma 6 3 7 2 3 1-2 S
Amblysefms Berlese 6 3 8 2 3 2-3 3
Cydnadrmnus new genus I 3 8 2 3 3 0-1
Phyllodrmnus DcLeon 6 3 8 2 1 2 0
Phytodromu nelw glens 6 3 8 2 2 1
Typhloseiella new genus 6 4 7 2 2 3 0
Typhloia4us new genus 6 4 8 2 3 3 2
Phytosciinae Berlcse
I)ubininellus Wainstcm 5 1 8 1 2 1-2 1 3
Fh~uoeius Ribaga r 1 8 2 3 3 1-3
Typhlaosiopsis DeLeon 6 2 8 2 3 4 3
Paraseiuieila new genus 6 2 8 2 3 1 0
iMehasuhlus new gentnu 6 2 9 1 3 3 0-1
Neoseiulus Hughes 6 2 10 2 3 3 0
Aniblydroimella new genus 6 2 10 2 3 3-4 3
Neo.enulella new genus f6 2 11 2 3 9 1
Aunstlrasilulvs new genus 6 3 11 2 3 1 0
Clsaidroeus new genus 6 2 10 2 2 8 3
Anthioewus DeLeon 6 2 10 2 2 3 0
Claminromina new genus 6 2 8 2 2 4 8
Amblydronms new grnus 6 2 8 2 2 2 2
'Typhlodramina new genus 6 2 8 2 2 4 0-1
Ca.lendoisiiomus new genus 6 2 8 1 2 4 0
Galendrmnus niew genus 6 2 9 1 2 4 0-1
Typhlodronnmu Schenten 6 2 9 2 2 4 1
Typhlodrnrmella new genus 6 2 10 2 2 4 0-3
T'phloctonus new genus 6 2 11 2 2 4 0
Seiunus Berlcse C 2 11 2 2 1 0
Purasehllus new genus 8 3 10 2 2 2-4 0
Number in formula aen nmiibers of (D) dorsal, (M) median, (L) lateral,
(S) srapular, (St) strnal, and (Pa) preanal setae, and (Mac) maerosetae on
4th leg.

Several undescribed species of Phytoseiidac were found dilrings
the preparation of this paper. They are described under their desig-
nated genera. In the diagnoses of new species, subfamily and generic
characters are omitted unless Ihey represent a variation from the









BULLETIN FLORIDA STATE MUSEUM


normal. Dorsal scutum measurements are of the female holotype
or the average of measurements of holotype and paratypes.
Holotypes are deposited in the United States National Museum
(USNM), Washington, D. C. Paratypes are deposited in the Univer-
sity of Florida Collections, Gainesville. Florida.

Key to the Subalainies of Phytoseiidae
1. Dorsal seutum divided, 7 pairs of dorsal setae (fig 1). . .Macrosciinae
Dorsal scutum entire, 4 to 6 pairs of dorsal setae (fis. 2 to 10) .. .2
2. Eight pairs of scapular setua (fig. 3), 4th leg with
many macroaetae . . . . . . Accodrommae
One on 2 pairs of scapular setac, (figs. 3 4, 10), 4th leg
with 0 to 3 macrosctae .. . . .. . 3
3 Four airs of anterior lateral setae ifigs 2, 4. 5, and 6), 6 to 8 pans
of lateral setae, and usually 3 pans ou distmguishable median
setae, 3 imacosclau on 4th leg and 3 pairs of preanal setar . Arnlhseiisac
Five or more pairs of anterior lateral sctae (figs 7 to 10). 8 to 11
pairs of lateral setac and usually 2 pairs of diltmngninlihla
median setac, 0 or 1 nmacroseta on 4th leg and 4 piris ut
preanal setae . . . .- .. . Plhytoseimae

SUBFAMILY MACROSEIINAE CHANT, DENMARK, AND BAKER
Macrosrmnae Chant, Dumniulk and Backer, 1959.
DIAGNOSIS. Characterized by a divided dorsal scutum, 7 pairs
of dorsal setac, 3 pairs of distinguishable median setac, 4 pairs of an
terior lateral setae and 2 pairs of scapular setae with S, on anterior
dorsal scutum.
TYPE cENrs. Macioseius Chant, Denmark, and Baker (by mon-
otypy).
GENUS Macroseius CaAMn', DnNMARK, AND BAKER

Macroseiu.s Chant. Denmark, and lakie, 1959
DIArCNoss. Eight pairs of lateral setae, some long and plumose:
3 pairs of sternal setac and 1 pair of preanal setae; 4th leg with 83
elongate macrosetae (figs. 1, 11, and 16)
TYPE SPECES. Macroseios biscutatus Chant, DeLnark, aind Baker,
1959. Monotypic.
DTscussroN. As Chant, et at. (1959) pointed out, this genus re-
sembles the Digamasellidae in having a divided dorsal scutum. These
mites have 7 pairs of setla in the dorsal series, an unusual number for
Phytosciidae.


VAl. 5








MUMA: PIIYTOSEIID MITES


SUBFAMILY ACEODROMINAE, NEW SUBFAMII.Y
DIAc'osTs. Characterized by an entire dorsal scutum, 5 pairs of
dorsal seti', 1 pair of distinguishable median setae. 4 pairs of anterior
lateral setae, and 8 pails of scapular setae with S, on dorsal scutum.
TYPE GENUS. Aceodromnus new genus

GENUS Aceodromnis, hEw GENUS
DiACuGOSl. Eleven pairs of lateral setae, some elongate and plu-
mose; 3 pairs of sternal setae and 3 pairs of preanal setae; 4th leg
with at least 6 elongate macrosetae (figs. 3, 11, and 24.)
TYPE spECIES. Aceodronmus convolvuli new species. Monotypic.
DiscussioN. The characters of this genus, though primarily those
of the Phytoseiidae, resemble those of the Aceusejidae in additional
scapular setae and macrosetae on the 4th leg. Of the median setae,
only ME are distinguishable.
Because of the obvious close relationship of Macroseius with the
Digamasellidae and of Acodromnus with the Aceosejidae, a recoim-
hination of the three families may eventually become necessary.

Aceodromus coenolouli, new species
Figures 21 to 24.
DIAcNosIs. Dorsal scutrm 0.40 mm. long and 0.21 mm. wide.
Dorsal setae small to minute and simple except for Da which is elon-
gate and plumose, M, minute; lateral setae small to minute and simple
except for LI, L,, Lp, LI, and Lu,, which are elongate and plumose;
scapular setae elongate with S1 on dorsal scutunm; sternal scutum
longer than wide and produced anteriorly; ventrianal scutum suhbri-
angular, longer than wide and without preanal pores; 4th leg with 6
distinguishable macrosetae, 4 on larsus, 1 on tibia and 1 on genu.
MATERIAL. Female holotype, USNM 2757, and nymphs from
Concolvulus sp. leaves at Weirsdale, Florida, 20 August 1959, by
Martin H Muma and Helen Louise Greene.

SUBFAMILY AMBLYS: IINAE. NEW SUBFAMILY
DIAGNosTs. characterizedd by an undivided dorsal sautum, usually
3 pairs of distinguishable median setae, 4 pairs of lateral setae anterior
to DI, 6 to 8 pairs total, and 1 or 2 pairs of scapular setae; ventrianal
sculoin usually with 3 pairs of preanal setae; 4th leg usually with 3
macrosetae.
TYPE GENUS. Anmblyseius Berlesc.


1961









271 BULLETIN FLORIDA STATE MUSEUM Vol 5

Key to Genera of Amblysennae

1. Six pairs of dorsal setac (fig 6) . . .. 9
Five pairs of dorsal setae (figs. 4 and 5) .. . . .. . 3
Four puias of dorsal rtac (fig. 2) . . ... . .. 2
2. Two distinct pairs of median setae . .. .. Phytoscutus
Three distinct pairs of median sutae . . . .. Phytoscutnr lla
3. Posterior atleal setae lineal, at nost weakly plunose . . 4
Posterinr lateral setae thickened. srrmnot clavatp or spatlate . 7
4. Two distinct paailn of median setae . . ... . ... 5
Three distinct pairs of median setae . . . . .Amblyseoiuus
5. Seven pairs ol lateral slua ..... ... . . 6
Eight pairs of lateral setae . roprioseiopsis
6. Lateral setae L missing . . . .. Phiosuiulella
Lateral setae L, missing .. . . . Anambyseilella
7. Oin distinct par oif imedian setae.. ... ... .. . 8
Two distinct pairs of mcditan scta . . . . .. A.sper seilsa
8, D. modified similarly to posterior laterals, 0 or 1
pair of preanal setare . . . .. . . Phytoseiulus
I, shinple, not lik potslrxij lateials, 3 aiiiur of prouail sotue . Proprwisiel
9. Poselrior lateral setae near and at most plumse r ... II
Posterior lateral setre, flattened and spatulate or lanceolate . .. 10
10 Lateral selae elongate, spatulate and serrate, 1 pair
ot scupulai setar . . . . Platlseiella
I ateral setae short, oblancicolate and smooth, 2 pairs of
eaplar setae ,. . .. ... Phyllodromnus
J1 Two oa 3 distiin octs o .oedisi. sac tae .. . .. . .. 13
Four distinct pairs of median state . . . . . .. 12
12. Two Dairs of sltHnal etlac. 4th leg witilut riacrouela ... Typhloseirlla
Three pairs of sternal setac. Ith Ice with 2 macroscLac .. Typhloseius

19 1I urth leg with 3 mnaciostac ... . . . . . 14
Fonrth leg with 0 or 1 racr.etae .. .. . . 16

14. Tlwo pairs of scapular setae. 3 pairs oi median setr e . . ... 15
()On pair of scapnlar setae, E pairs of moirlia sreta . Armblyscutus

15 Seien pairs of lateral selae, 1 or 2 pairs of preanal etae AmbiLslycila
Eight pairs of lateral setae, 2 or i pairs of preinal etae . Amiblyseuis

16. Two pairs of scapil.t sitar, i pairs l preanal setae . 17
One pair of scapular setae, 4 pairs of preanal setea . Cydnodromella

17. Three pairs of sternal setae . . . . 18
Two pairs of sternal setae .. . .... .. Plhtodromus

18. Seven pairs of lateral setae.. . . Paadromus
Eight pirs oF lateral star .. . . .. Cydnodromus








MU.MA. PHYTOSEID MITES


GENUS PhytOosiUtS -NEW GENUS
DIacuosis. Four pairs of dorsal setae, 2 pairs of distinguishable
median setae, 8 pairs of lateral setae, some elongate and weakly
plumose, 2 pairs of scapular setae, 3 pairs of sternal setac and 3 pairs
of preanal setae on a massive ventrianal scutum; 4th leg with 3 macro-
setae, 2 elongate and 1 short and hooked (figs. 2, 13, 27 and 28.)
TYPE SPECIES. Phytoscutus sexpilis new species. Monotypic.
DiscLssioN. See the discussion under Phytoscutella. This genus
lacks the median setae usually associated with L,.

Phytoscilus sexpilis new species
Figures 25 to 28
Dlacxosis. Dorsal scotuim 0.35 mm. long and 0.32 sinn. wide.
Dorsal setae small and simple; Mi small and simple, M. elongate and
weakly plumose; lateral setae small and simple except for LI and I,
which are elongate with L, weakly plumose; scapular setae minute;
slernal scutum much wider than long and reticulate, ventrianal scutum
exceptionally large and reticulate, with an elliptical pair of preanal
pores; 4th leg with an elongate macroseta on the genii and tibia and
a short hooked macroseta on the tarsus.
MATERIAL. Female holotype, USNM 2758, male allotype and
paratypes feeding on acarids on grapefruit leaf at Polk City, Florida.
22 May 1954, by Martin H. Mumna. Male and female paratypcs on
grapefruit leaves at Lake Alfred, Florida, 7 May 1954, by H. L. Greene.
Male and female paratypes on fungus feeding acarid at Lake Alfred,
Florida, 17 March 1955. by H. L. Greene.
lIscussioN. This species feeds commonly on acarids on citrus.
It may be distinguished from 1'. salebrosa (Chant) by the apparent
lack of Ls, by the ridged and pitted dorsal scutum, and by the different
macroseta on the 4th leg. The spermataphore hearer of the male is
bladelike, tapered apically, and hooked dorsally at the tip.

CENSUS Phytoscutella NEW GENUS
DIAc osis. Four pairs of dorsal setae, 3 pan's ol distinguishable
median setae, 8 pairs of lateral sotae, some elongate and weakly plu-
mose, 2 pairs of scapular setae, 3 pairs of sternal setae, and 3 pairs of
preanal setac on a massive ventrianal scutum; 4th leg with 3 short
macrosetae (figs. 11 and 16.)
TYrP spr.tiEs. Typhlfodromus salebrosus Chant, 1960. Monotypic.








BULLETIN FLORIDA STATE MUSEUM


DiscussioN. This genus and Phytosentus may he eventually com-
bined. They ale presently distinguished by differences in the number
of median setac and in the macrosetae of the 4th leg.

GENUS Phytoseiulus EvaNs
'hAt.seiulus Evans, 1952.
DIAGNOSIS. Five pairs of dorsal setae, some elongate and plumose,
1 pair of median setae, 7 pairs of lateral setae, some elongate and dis-
tinctly plumose, 2 pairs of scapular setae on interscutal membrane,
3 pairs of sternal setae, and 0 or 1 pair of preanal setae. Fourth leg
with 1 or 2 elongate plumose macrosetae (fig. 13.)
TYPE SPECIES. Laelaps macropilis Banks, 1905 (by inonotypy).
KNOWN SPECIES. P. macropilis (Banks), P. persimilis Atlias-Hen-
riot.
DlSCussION, This genus lacks lateral setae in tlhe position normally
occupied by L., and of the median setae only M, are distinguishable.

GENUm Phyloseiulella NLEW ss us
DIAGNOSIS, Five pairs of dorsal setae, 2 pairs of median setae, 7
pairs of lateral setae, some elongate and weakly plmrose, 2 pairs ol
scapular setae on interscutal membrane, 3 pairs of sternal setae, and
3 pairs of preanal setae; 4th leg with 3 elongate macrosetae (figs. 13
and 16.)
TYxP sPEIES. Iphiseihs grovesae Chant, 1959. Monotypic.
DISCUSSION. This genus is closely related to Proprioseiopsis, but
lacks a pair of lateral and median setae between the anterior laterals
and posterior lateral. Because these are the only known distinguish-
ing features, the two genera may have to be combined it study of the
types reveal no sternal or macrosetal differences.
Chant described this species in Iphisei'us because of a lightly
sclerolized interseutal membrane. Sclerotization varies from species
to species and even specimen to specimen within the genera Ambly-
seiis and Amblyseiulus and cannot therefore be considered to be of
generic importance.

GENUS Amiblyseifuella NEW GENus
DIAluGosis. Five pairs of dorsal setae, 2 pairs of median setae,
7 pairs of lateral setae, most of them elongate and plumose, 2 pairs
of scapular setae on interscutal membrane. 3 pairs of sternal setae,
and 3 pairs ol piranal selae; 4th leg with S elongale Imacioslae (figs
11 and 16.)


Vol. 5








MUMA PHIYTOSEIID MITES


TYPE sPT:c s. Typhlodromaus heteae Oudcmans, 1930. Mono-
typic.
DiscussioN. This genus lacks lateral setae in the position normally
occupied by L,. The posterior median setae are not distinguishable.

GENUS Propriuseius CIANT
Pro'riose.u Chant. 1957c.
DIAGNosIs. Five pairs of dorsal setac, 1 pair of median setae, 8
pairs of lateral setae, some distinctly clavate and serrate, 2 pairs of
scapular setae on interseutal membrane, 3 pairs of sternal setae, and
3 pairs of preanal setae; 4th leg with 0 or 1 macroseta (figs. 11 19
and 20.)
TYPE s PcEs. Proprioseius meridionalis Chant, 1957c (by desig-
nation).
KMown SPECIES. P. meridionahs Chant, P. caincyi Chant, P. oude
nansi (Chant), P. mirandai DeLcon.
DIscrssioN. Although Chant described P. oudemansi in his sub-
genus Amblysi-is of Typhlodronnus in the broad sense, it is a typical
Proprioseius Chant in all seal and scutal characters both dorsal and
ventral.
In this genus only M1 are distinguishable. The genus is most
closely related to Phytoseiuius.

GEwus Proprioseiopsis NEW GENUS
DIAcNosis. Five pairs of dorsal sctae, 2 pairs of median setae, 8
pairs of lateral setae, some elongate and weakly plumose, 2 pairs of
scapular selae on interscutal membrane. 3 pairs of sternal setae, and
3 pairs of preanal setae; 4th leg with 3 elongate macrosctac (figs 11
and 16.)
TYPr SPECIES. Typhlodromus terrestris Chant, 1959.
KNowN sPECIEs. P. terrestris (Chant), P. sondersi (Chant).
DiscussioN. This genus is discussed under Phytoseiulella. The
median setae usually associated with L, are absent.

GENUS AspTroseiM s CHANT
Asperm eu. Chant, 1957e.
DIAGNosIS. Five pairs of dorsal setae with D lIlattened and ser-
rate, 2 pairs ot median setac, 7 pairs of lateral setae, most of them
strongly flattened and serrate, 2 pairs of scapolar setae on interscutal








278 BULLETIN FLORIDA STATE MUSEUM Vol. 5

membrane, 3 pairs of sternal setae and 3 pairs of preanal setac, 4th
leg without macrosetae (figs. 11 and 20.)
TYPE saPEIES. Asperoseius africanus Chant, 1957c. Monotypic.
DiscusstoN. Species of this genus lack a pair of lateral setae in
the position normally occupied by L,. The posterior median setae are
not distinguishable.

GENUS Amblyseiulus NEW GENUS
DIAGNOSIS. Five pairs of dorsal setae, 3 pairs of median setae,
8 pairs of lateral setac. some elongate and weakly plumose. 2 pairs of
scapIlar set;:, onr irntersCutal Inemlbrane, 3 pairs of slernal sclac, and
3 pairs of preanal setae, 4th leg with 3 elongate macrosetae figs. 4,
13, and 16).
TYPE SPECIES. Typhlodromus okanagensis Chant. 1957a.
KNOWN sepCES. A. okauagensis (Chant), A. aselus (Chant), A.
lepidus (Chant), A. lichenis (Chant). A. ovatus (Carman), A. oregonen-
sis (Garman). A. putnaimi (Chant), A. fragariae (Kcnnctt). A reticu-
latus (Garman), A. mexiranms (Garman), A. sepitu (Gannan), A. Iropi
canus Garman, A. elongaius (Carman), A. rosellus (Chant). A. detritus
new species, A. dorsatu. new species, A. onlatus new species. A. rotun-
dus iew species.
DiscrssiON. Most species of this genus have the sternal and ven-
trianal scuta reticulate, only three do not.
This genus superficially resembles Aniblyseius but is easily recog
nized by the presence of only 5 pairs of dorsal setae.

Amblyseiulus dorsatus new species
Figures 29 to 32
DIAcNosis. Doisal scutum 0.38 mm. long and 0.27 mm. wide
Dorsal setae small and simple with De distinctly turlher apart than
other dorsals; MI and M, small, M, elongate and weakly plumnose;
lateral setac 1,1 TL,, and 1., weakly plumose, L_, La, L-, L., and L'
small with L.2 and ,La not aligned with L, and L4; scapular setae small;
sternal scutum slightly wider than long ands smooth; ventianal scutum
pentagonal, longer than wide, smooth and with small round preanal
pores tl]at are nearly aligned will posterior prcanals; macrosetae of
4th leg progressively shorter distally.
MATERIAL. Female holotypc. USNM 2759, male allotype and fe
male paratypes from citrus at Magnolia, Louisiana, 1S Novembei
1958. by D. W. Clancy and A. Selhime. Female paratypes from scaly








MLl\AA: PHYTOSEIID MITES


orange leaf at DeLand, Florida, 3 February 1959. by D. W. Clancy.
Female paratype from Bhlefields, Florida, 15 April 1959, by II. L.
Greene.
DlscirxssiON. This species is closely related to A. elongatus (Car-
man) from which it may he distinguished by having D4 widely sep-
arated, I,, and La not aligual with L1 and L1, and the preanial pores
nearly aligned with the posterior preanals.
A dorsatus, A. elongaturs (Carman) and A. tropicarus (Carman)
are the only species of Amblyseiulrs without reticulate ventriaial
sctlta
Amblysehius oblatus new species
Figures 41 to 44
DIAcosIs. Dorsal scutuml 0.40 mm. long and 0.31 mm. wide,
Dorsal setae small to tiny and simple; M, and Ms small and simple,
M eclongate and weakly plumose; L, and L_ subecqal, La one half
length of L1, L, two to three times length of Li, and L,, L,,, and L?
slightly smaller than L1, L., elongate, weakly plumose, and longer
than T. and M. which are suhequal; S, and Sa small with S, slightly
larger; sternal scetum much longer than wide and reticulate; ventri-
anal scutum subtriangulai wilh rounded lateral margins, reticulate
and lacking prcanal pores, macrosetae on 4th leg longest on tarsus
and shortest on tibia.
MArTEmi.. Female lolotype. USNM 2760, from [?] C. P., Oregon,
1 April 1958, by C. Krantz.
DIscuSSIoN. The station of the dorsal scutum of this species is
almost identical with that of A. tropicanus (Carman) but the ventri-
anal scutin is differently shaped and ornamented and lacks preanal
pores. It has closer affinities with A. fragariae (Kennett) and A. reticu-
latus (Garman).

Ambly/seiulus rotundrls new species
Figures 37 to 40
DIcANOSIS. Dorsal scutum 0.36 mm. long and 0.31 mm. wide.
Dorsal setae except for Di minute; M1 minute, Ml small but larger
than L;,. and MA elongate, longer than any of the laterals, and smooth;
LI and l elongate ani subcqual, L, shorter than T., L, shelter than
Li, ., one half length of L2, and L.. and L progressively smaller
than La; scapular setae small; sternal scuturm wider than long and
reticulate; ventrtanal scutum pentagonal, reticulate, and with a pair of
tiny preanal pores; mnatrosetae of 4th leg longer on distal segments.


1961








280 BULLETIN FLORIDA STATE MUSEUM Vo. 5

MAErIaAL. Female iholtype, USNM 2761, and female paratype
from fescue at Spring Water, Oregon, 16 Apri 1958, by G. W. Krantz.
DIscussioN. The dorsal scutum of this species is more nearly
round than on any other species of the genus. This species has its
closest affinities with A. ovatus (Garman) and A. oregonensis (Garman)
from which it differs in the length of MN and the size and position
of the prcanal pores.

Amblysewius detritus new species
Figures 33 to 36
DIAGNOSIS. Dorsal scutum 0.31 mm. long and 0.21 mm. wide
Dorsal setae, except for DI. small and simple; M, and M. small, hbt
Ma is elongate and weakly plumose; lateral setae L1, La and T., elon-
gate with Ls weakly plumose. ,2, La, L., L, and L, small with L)
and La not aligned with 1,, and L5, and L slightly larger than La
scapular setae small; sternal scutum slightly wider than long and
faintly lined; ventrianal scutum pentagonal, longer than wide. retic
late and with tiny, widely separated preanal pores lying lust behind
the posterior preanals. Macrosetae on 4th leg longest on tarsus and
shortest on tibia.
MATERIAL. Female holotype, USNM 2762, from pine and hard-
wood itter at Moss Bluff, Florida, 22 May 1958. by H. L. Greccn and
Martin II. Muma. Male allotype from citrus litter at Avon Park,
Florida, 7 December 1959, by H. L. Greene and Martin H. Muma.
DiscussioN. This species is closely lelaled to A. ptinami (Chant)
from which it differs in the comparative size and position osf I1. and
La and the position of M..

GENUS Platyseiella NEW GENUS
DIAGNOSIS. Six pairs of dorsal setae, 1 pan' of median setae, 7
pairs of lateral setae, most of them elongate, flattened and serrate, 1
pair of scapular setae, S1, on doraal scutum, 3 pairs of sternal setae,
and 2 pairs of preanal setae; 4th leg with 3 elongate knobbed macro-
setae.
TYrE SPECIES. Phytoseiella plulypilis Chant. 1959. Monotypic.
Discussion. This is a unique genus of the Amnblyseiinae, not only
in the possession of flattened, serrate setae but in the position of St
on tli dorsal scutuirn. Of the Imedian selae, only Mi are distinguish-
able.






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Figures 1 to 20. 1. Dl ided dorsal scutum. 7 dorsals. 3 medians, 8 laterals,
2 sea)pulors. 2. Enthle dnrsal scutum, 4 dorsals, 2 medians, 7 lateral (4 anterior),
2 scapolars. 3. Entire dorsal snitum, 5 dorsal, 1 median, 10 laterals (4 anterior),
8 scapulars. Entire dorsal seutom, 5 dorsal, 3 medians, 8 laterals (4 anterior),
2 scapulars. 5 Entire dorsal scutum, 5 dorsals, 1 median, 6 laterals (4 anterior),
I scapular. 6. Entire dorsal scutual, 6 dorsals, 3 medians, 8 laterals (4 anterior),
2 seapilars. 7. Entire dorsal scutum, 5 dorsals, 1 median, 8 latezals (5 anterior),
I scapular on scutum. 8. Entire dorsal scutum, 6 dorsals, 2 medians, 10 lateral
(5 atcnior), 2 scapnlais. 9. Entire dorsal scutum, 6 dorsals, 2 medhans. 10 lat-
erals (6 anterior), 2 scapdlas. 10. Entire dorsal scutumn, 0 dursal, 3 medians. 11
laterals (6 anterior), 3 eapulais. 11. Sternal scutum wider than long and with
three pairs of setac. 12, Sternal sctum longer than wide and with hiree pairs
of aetae. t:i Sternal scutum reticulate. 14. Sternal scutum lobate posteriorly.
15, Sternal scutam with two pairs of setae. I6 Fourth leg with three elongate
mnacrostale, that on g goe shortest, that on tarsus longest. 17. Fourth leg with
three elongate mlacroseta, that on tibia shortest, that on tarsus longest. 18.
Fourth leg with thlee short hooked macrosetae. 19. Fourth leg with one macro-
seta, 20. Fourth leg without ilaerusetae All figures sclcmatse.


Figures 21 to 24. Aceodromnui convolulid new spec-is 21. Dorsal scutum.
22. Siernal, metastcnal, and metapodal scuta. 23. Ventrianal scurtum. 24. Genu,
tibia, and hasitarsess of 4th leg.
Figures 25 to 28 Plhtoscuius sexpihrl new species. 25. Dorsal scutum and
tip of spL)nimaophoro bearer. 26. Sternal, metasternal and metapodal seita. 27.
Ventrianal seutum. 28. Genu, tibia. and bautarsus of 4th leg.
Figures 29 to 32. Ailblreiiuhis dorsatus nest species. 29 Dorsal scutum
aid tip of .irpriatouohore beater. 30. Sternal metast(tiial, and metapodal scula.
,1 Ventrianal scutim 82 Genu, tibia, and hasitarsus of 4th Ica.


Figsires '3 to 36. Amihliqeiuls detritus new species. 33. Dorsal scutum
aid tip of sermiatophore bearer. 34. Sternal, metasternal, and metapodal scuta.
35. Veitrianal scitunm 36. Genu, tibia, and hasitaroaus of 4th log.
ligurrs 37 to 40. Ambhiseokdus rolundus new species. 37. Dorsal scautm.
38 Sternal. mnetiasernaI, and metapodal scula, 39. Ventrianal sentiun 40 Genu,
tibia, an1d basitrsua of 4th leg.
Figures 41 to 44. Amblyseiatus oblatuu new speices. 41. Dorsal seutunmi
42. Stacn.al, imetasternal, and metapodal scuta. 43. Ventrianal sCutum. 44. Genu,
tibim. and basilarsus of 4th leg.


Figures 45 to 48 4mnbissriu microsetae new species. 45. Dorsal scutum.
46 Sernial, metasternal, and iluIapodal scuta 47. Venllriandl scutmir. 48. Genu,
tibia, and haatarsus of 4th leg.
'iignres 49 to 52 Amsblyise su magnlise new species 49. Dorsal scutum
and tip of spermntophore bearer. 50. Sternal, metasternal, and metapodal scuta.
51. Ventrianal sentum 55 Genu, tibia, and basitarasu ot ith leg.
Figintes 53 to 56. Amblsljseais cotoensis new species. D, orsal scutuin. 54.
Sternal, metasternal, and metapodal seuta .5. Ventrianal senlh m 56 Geiu,
tibia, and basitarsus ot Itl, hg.








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GE vN Amblyscutus NEW GENUS
DIAGNOSIS. Six pairs of dorsal setae, 2 pairs of median setae, 7
pairs of lateral star, some elongate and weakly plumose, 1 pair of
scapular setae on interscutal membrane, 3 pairs of sternal sctae, and
3 pairs of preanal setae; 4th leg with 3 elongate macrosetac (figs. 11
and 16'.)
TYPE SPECIES. Amblyseius grandis Berlese, 1911. Monotypic.
DIscussioN. Species of this genus lack lateral setae in tile posi-
tioln normally occupied by L,. The posterior median setae are not
distinguishable.

GENUS Cydnodromella NEW GENUS
I)rACosTs. Six pails of dorsal setae, 2 pairs of median setae, 8
pairs of lateral setac, most of then elongate and slender, 1 pair of
scapular setae on interscutal membrane, 3 pairs of sternal setae, and
4 pairs of preanal setae; 4th leg without macrosetae (figs. ll and 20.)
TYs SPECIES. Typhlodromus pilosus Chant, 1959. Monotypic.
Drsc(ussroN. Chant overlooked the presence of 4 pairs of lateral
setae anterior to D4 when he placed this species in his subgenus
Typhlndiroimu. II is a typical A ib1lyspiinae except in the number of
median and preanal setae and macrosetae on the 4th leg. The median
setae usually associated with Lj are absent.

GENSs Paradromus NEW CENUS
DIACNOsts. Six pairs of dorsal setac. 3 paiis l median setae. 7
pairs ol lateral setae, most of them short and simple, or weakly plu-
mose, I pair of scapular setae on interscutal membrane, 3 pairs of
sternal setac, and 3 pairs of preanal setae; 4th leg without macrosetae
(figs. 11 and 20.)
TYPE sPesxnr. Typllodromu anherrans Oudemans, 1930. Mon-
otypic.
DiscussioN. Species of this genus lack a lateral seta in the posi-
tion normally occupied by L,.

GExus Amhlyseiella MUIA
Amblitseiella Muma, 1955.
DIAGNOSTS. Six pairs of dorsal setae, 3 pairs of median setae, 7
pairs of lateral setac, some elongate and weakly plumose, 2 pairs of
scapular setae on intersuntal membrane, 3 pal s of sternal setae, and


Vol 5








\MUMA: PHYTOSEIID MITFS


1 oi 2 pairs of prcanal setae; 4th leg with 3 elongate macrosetae (figs.
11 and 16.)
TYPE srEriLS. Amblyseiella setosa Muma, 1955 (by designation).
KNowN SPEcIES. A. setosa Muma, A. irregularis (Evans).
DiscUssION. Although the two species placed in this genus seem
to be closely related, lle different positions of M, the lack of appar-
ently different (Le or L7) poslerior lateral setae, and the form and
station of the ventrianal scuta may, when additional species have
been collected, pron to be of generic importance.

G.-xus Aiblyseius BjKHLESE
AmbblUseau Berlese, 1911.
D)AcNOSIS. Six pairs ot dorsal setae, 3 pairs of median setae, 8
pairs of lateral sclae, some elongate and weakly plumose, 2 pairs of
scapular setae on interscntal membrane, 3 pairs of sternal setae, and
2 or 3 pairs of preanal setae; 4th leg with 3 macrosetae, some long
and some short (figs. 6, 11, 17, and 48.)
TYPE spECicS. Zercon obtusus Koch, 1839 (by designation).
KNowN SPECEms. Slbgcnus Amhlyseius Berlese3: A. obtusus
(Koch), A. krantzi (Chant), A. mnultidentatu, (Chant), A. perlongisetus
Berlese, A. herbiculus (Chant), A floridanus (Muma), A. caudatus
Berlcsc, A aerialis (Muma), A. schusteri (Chart), A. foenalis Berlesc,
A. andersoni (Chant), A anericanus (arman, A. sylvaticus (Chant),
A. gracilis (Garman), A. mri'dionalis, Berlese, A. microsetae new
species.
Subgenus Amblyseiulus new subgenus: A. largoensis (Mumna), A.
caudatus Berlese, A. magnolia new species, A. italics (Chant).
Subgenus Typhlodromnopris DeLeon: A. cucumeris (Oudemans),
A. radesmacheri (Dosse), A, gramniis (Chant), A. brittanicus (Chant),
4. fraterculus Berlcse, A. potentillae (Carman), A. siniliv (Koch), A. ju-
cundis (Chant), A. robinae (Clhant), A. evanei (Chant), A. japonicus
(Ehara), A. longispinosus (Evans), A. fallacies (Gannan), A. masseei
(Nesbitt), A. umbraticus (Chant), A. asiaticus (Evans), A, callunae
Willmann, A. garmani Willmann, A. aequipilis Berlese, A lungulis Ber-
lese, A. norgani (Chant), A, collyerae (Chant), A. exopodalis (Kennett),
A. quercicolus (DeLeon), A. dentilis (DeLeon), A. dillus (D)eLeon),
A. similoides Buchelos and Pritchard, A. fordycei (D)el eon), A. simple
cissimius (DeLeon), A. soiali (DeLeon), A. confertus (DeLeon), A.
coloensis new species, A. tsuggawai (Ehara).

SSee discussion for diagnoses of isuhlioer,








288 BULLETIN FLORIDA STATE MUSEUM Vol 5

Subgenus Typhlodromalus new subgenus: A. peregrirus (Muma),
A. finlandicus (Oudemans), A. newsami (Evans), A. africanus (Evans),
A. limonicus Carmanr arnd McGregor, A. primulae (Chant), A. ovalis
(Evans), A. victoriensis (Womersley), A. hibisci (Chant), A. maesrn-
brinus (Dean). A. scutalis (Athias-Henriot), A. planetarius (DeLeon).
Subgenus lphiseius Berlese: A. degenerans (Berlese), A. quadripilis
(Banks), A. assamensis (Chant).
Questionable Species: A. aferulus (Chant), A. cuncorrdis (Chant).
DrsCUssION. This large genus may be separated into subgenera
as indicated below. Those species like A. obsiuss (Koch) with Ls
long and whiplike, much longer than the distance between their bases,
with long whiplike macrosetae on the 4th leg of which that on the
genu is longest, with the sternal scutum wider than long and with a
shield-shaped ventrianal scutum would comprise the typical subgenus,
Amblyseius. Those species similar to typical Amblyseius but with
the sternal scutum longer than wide and an elongate constricted ven-
trianal scutum, as in A. largoensis (Mumna), would comprise a second
subgenus, Amblyseiah(s. Those species, like A. cuctmeris (Oude-
mans), with Ls shorter, at most only slightly longer than the distance
between their bases, with short macrosetae on the 4th leg of which
that on tarsus is longest, with sternal scutum as wide or wider than
long and posteriorly straight or at most undulate and with a shield-
shaped ventrianal seutum, would make up the subgenus Typhlodro
inopsis. Those species, such as A. degenerants (Berlese), similar to
Typhlodromopsis but with the sternal scutum much wider than long
and with the macrosetae on the 4th leg longest on the gcnu would
make up the subgenus lphiseiss. Those similar to Typhlodromopsis
but with the sternal scutum longer than wide and posteriorly lobate,
and with the ventrianal scutum elongate and constricted, as in A.
peregrinus (Muma), would make up the fourth subgenus Typhlodrom-
ahls.
A. afeirulus (Chant) and A. comcordis (Chant) are included doubt
fully in this genus; they reportedly lack Si and S2 respectively. As
Chant (1959) erroneously omitted scapular setae in several descrip
tions and illustrations, their assignment here must be considered doubt-
ful until the types have been examined. It should be noted that the
genera Amblyseiopsis Carman and Iphiseius are svnonymized here.
Garman's A. a mericanus does not differ generically from A. obtusits
(Koch). The fragmented ventrianal scutum and degree of scleroti-
zation of Berlese's degenerans are not considered generically impor
tant. Chant overlooked D-, on A. quadripilis Banks, which is a typi-
cal though highly sclerotized Amblyseins.








MUMA: PHIYTOSE ID MITES


Amrblyseisus ricrosetae new species
Figures 45 to 48
DrIcNosls. Dorsal scutuim 0.36 mm, wide and 0.29 mm. long.
Dorsal setae all minute and simple; MI minute, \M small, Ma elongate
and weakly phlmose; L., L;, Li, and L, minute, L, and I., small, La
elongate, arnd L, very long and weakly plumose; scapular setae minute;
sternal scutum nearly as long as wide and smooth; ventrianal scutum
pentagonal, reticulate, and with small round preanal pores nearly as
widely separated as posterior preanal setae, ma rtnsetae of 4th leg
shorter distally.
MATFIArL. Female holotype, USNM 2763, Irom rotting fir bark
at Corvallis, Oregon, 7 December 1955. by E. C. Burts.
DrscTssioN. This species is closely related to A. multidentat'us
(Chant) from which it may be distinguished by the relative lengths
of Ms and L,, and the presence of reticulation and preanal pores on
the ventrianal scutum.

Amblyseius magnoliae new species
Figures 49 to 52
DIAGNOSIS. Dorsal scutum 0.36 mm. long and 0.26 mni.. wide.
Dorsal setae small to minute and simple; M1 and M, small, Ma elon-
gate and weakly plumose: La, LA, Ls, La and L,- small, L, elongate,
L4 twice as long as L1, and Ls twice as long as L4 and weakly plu-
mose; scapular setae small to minute; sternal scutum nearly as long
as wide arnd smooth; ventrianal scutum vase-shaped, abruptly con-
stricl:d behind the posterior preanal setae and provided with cres-
erntic preanal pores adjacent to the posterior preanal setae, macrose-
tae on 4th leg shorter distally.
MATERIAL. Female holotype, USNM 2764, male allotype, and
female paratype from citrus leaves at Magnolia, Louisiana, 18 No-
vember 1958, by D. W. Clancy and A. Sellime.
DlscussioN. This species is closely related to A. largoensis (Muina)
from which it may he distinguished by proportionately longer L, and
the distinctive ventrianal scutum.

Amblyseius cotoensis new species
Figures 53 to 56
DrAcxosis. Dorsal sr:utum 0.31 mmn. long and 0.21 mm. wide.
Dorsal setae, except for D, small and simple; M, and MX small, hut


19 i








Ii.T.JTIN FLORIDA STATE f:MSEM.1


k\i lriongateC and phlummoe; lateral selae Li, L,, La, L,, and L5 elongate,
with L,, L5, and L- subequal, L, longer than L, and plumnose, and
L,, L, and LT small; S, elongate, S2 small, sternal scutum wider than
long and reticulate: ventrianal scutum pentagonal, longer than wide,
reticulate and with elliptical premal pores equally spared between
and just behind the posterior preanals, macrosetac on 4th leg longest
on tarsus and shortest on tibia.
MATERIAL. Female holotype, IUSN \ 2765, taken while panning
kudzu [a method ot collecting collembola by sliding a pan through
low foliage] at Coto, Costa Rica, 25 October 1957, by E. Dixon.
DiscussIox. Most closely elated to A. potentillae (Garman) and
A. similis (Koch), this species differs in the lengths of L, and Si and
the reticulation of the ventrianal scutum.

CENus Cydnodromus NEW GEcUS
DIAGNOSIS. Six pairs of dorsal setae, 3 pairs of median setae, 8
pairs of lateral setar, mist of then slrhort and simple, 2 pairs of scapu-
lar setac on interscutal membrane, 3 pairs of sternal setae, and 3 pairs
of preanal setae; 4th leg with 0 or 1 slender, elongate macroseta
(figs. 6, 12, 19 and 20.)
TYPE SPECIES. Lasioseius marines Willmann, 1952.
KNowN sPFrIFs. C. marinus (Willmann). C. longispinosus (Evans),
C. reticulatlus (Oudemans), C. brevispinus (Kcnnctt), C. zwoelferi
(Dosse), C. cucumeroides (DeLeon), C. payspalivorus (DcLeon), (U.
deserlus (Chant), C. scoticus (Collyci), C. nouaescotiae (Chant), C.
ornatus (Athias-Henmot), C. longilaterus (Athias-Ilenriot), C. bellinus
(Womenrsley), C. amicus (Chant).
TIISClSsON. This genus, because of its heterogeneous nature, may
be divisible into species groups in recognition of the slender dorsal
scuta of such species as C. idesertus (Chant), C. paspalioorus (DeLeon)
and C. niarinus (Willmnasn), bul tliese species are not well enough
known at present. Several apparently closely related species have
no macrosetae; others possess a distinct macroseta on the taisus of
the 4th leg.
GENUS Phyllodromus DELEoN
Phyillodromus DeLeonn 1959d
DIAGNOSiS. Six pairs of dorsal setae, 3 paiis of median setac. 8
pairs of lateral setae, mostly flattened and lanecolate, 2 pairs of scap-


Vol. 5








MUMA P-YI OSEIID MITES


ular setae on interscutal membrane, 3 pairs of sternal setae, and 2
pairs of preanal setae; 4th leg without maciosetae (figs. 6, 11 and 20)
Tvyr.: sPECrE. Phyllodromus leiodis DeLeon, 1959d (by mono-
typy).
DiscussioN. This is a typical Amblyseiinae except in the number
of preanal setae and macrosetae; it seems most closely related to
PlFayseiella.
CENUq Phytodronu s NEW GcNus
DIAcNoass. Six pairs of dorsal setae, 3 pairs of median setac. 8
pairs of lateral setae, all short and simple. 2 pairs of scapidar setae,
2 pairs of sternal setac, and 3 pairs of preanal setae; 4th leg with 1
short macroscta on tarsus (figs. 6, 15 and 19.)
TYrei SPECIES. Amblyseius leucophaeus Alhias-Henriot, 1959.
Monotypic.
DIscusSION. See discussion under Typhloselella.

GOLus Typhlos iella NEW GENUS
DIAGNosrs. Six pairs of dorsal setae, 4 pairs of median setac, 7
pairs of lateral setae some elongate and plumose, 2 pairs of scapular
setac on interscutal membrane, 2 pairs of sternal setae, and 2 pairs of
preanal setae; 4th leg with no elongate macrosetae (figs, 15 and 20.)
TYPE spEciEs. Seiulus i,otrchus Athias-Hlenriot, 1958. Monotypic.
I)scussioN. This genus and Phytodromus are the only genera of
AmblyseTinac will only 2 pairs of sternal setae. Otherwise Typhlosei-
ella closely resembles Typhloseius. This genus lacks a lateral seta in
the position normally occupied by 1.7 The 4th pair of median setae
lies between L- and L, just anterior to the posterior riedians.

GENus Typhloseius NEW GENUS
DIAcNosis. Six pairs of dorsal setae, 4 pairs of median setac, 8
pains of lateral setae, some elongate and plumose, 2 pairs of scapular
setae on interscntal membrane, 3 pairs of sternal setac, aind pairs of
preanal setac, 4th leg with 2 elongate macrosetae (fig. 11.)
T-PI SPEIES Amblyseiopsis sex!tus Garman, 1958. Monotypic.
I)ISCLSSION. Only two genera of phyloseiids, this and Typhlosei-
ella have 4 pairs of median setac. Multiple scapulars and medians are
normal characteristics of Aceosejidac but sehlom occur in the Phyto-
seiidae.









292 BULLETIN Fl ORIDA STATE MUSEUM Vol. 5

SUBFAMILY PIIYTOSEIINAE BERLESE

Phytosemiae Berlese, 1916.
DIAcNOSIS. Characterized by an undivided dorsal scutum, usu-
ally 2 pairs of distinguishable median setae, 5 or more pairs of lateral
setac anterior to D), 8 to 11 pairs total, and 1 or 2 pairs of scapular
setae; ventrianal scutum usually with 4 pairs of preanal setac; 4th
leg usually with 0 or 1 macroseta.
TYPE GENUS. Phytoseius. Ribaga (by designation).

Key to Genera of Phytoseiinae
1. Six pans of dorsal setae (figs 8, 9, and 10), 2 or more pairs
of median setae . . . 2
Five pails of dousal ,sae (fig. 7), 1 pair of median setae . Dubiniiius
2. Three pairs of sternal state (fig 11) . . . .. 3
I we airs of steal seta (fig. 15) . . . . . 10
3. Lateral setae unequal in length, 4tlh lg willi 8 macioLta . . 4
Lateral sclac subcisual in length, 4th leg with 0 or 1 macroseta . 6
4 Most of the lateral setac thickened and senate. 3 pairs of
preanal setae . . . . . . Phyftseius
Most of the lateral setae slender at iiiot eakly plu.mue,
4 pairs ot p.eanal selae ... ... . 5
5 Nme pairs of lateral setae, 5 anterior to DI . Typhloseiopsis
Ten pairs of lateral setae, 6 anterior to Di . . . Amblydromenla
6 Three panrs tf preanal seta .. .. .. 7
Four pails of preanal setae . . .. . .... 9
7 Nine pans ol lntrial setae, 1 pair of scapular setae ... Metaseiuis
Ten or more pairs of lateral setae, 2 pairs of scapular setae . . . 8
8, Ten pans of la.ial atac, no imacrosetae on 4th leg . Neo.eiulus
Eleven pairs of lateal setac, 1 macroseta on 4th leg . . Neosr iella
9. Eight pairs of lateral setac, 2 pairs of median setae Paraseulella
Eleven pairs of lateral setae 3 pairs of median setae . Australiseiilus
10. Funlt leg with 3 i ias ulcisctu . . . . . 11
Fourth leg with less than 3 macrosetae. . . . . 12
11. Eight pairs of lateral setae, macrosetae short and Looked . Clao'oromnma
'I en pairs of lateral setae, macrosetae long and near Cla idromis
12. One pan- of scapular setae . . .. . . . .13
Two pairs of scapular setae .. . . . 14
13. Right pairs of lateral setae ... Calendromnimi
Nmn pairs of lateral setae .. .. Gatlemlromus
14. Five pairs of anterior lateral setae . . . . . 16
Six pairs of anterior lateral setae . . . . . . . 15








MUMA. PIIYTOSEI[D MITES


15 Eluven pairs of latleal setae, 4th leg Nvilliuut macrosctae . Typhilo7ictom
Nme pairs of lateral sctav, 4th leg with I mnacroseta . Tiphlaodromuas
16. Eight pairs of lateral seLac ... . . . .... 17
Ten or marc pairs of lateral sla . . . . 18
17. Two pairs of prcanal setae, 2 macrosctac on 4th leg . Amblydromnus
Four pairs of preanal setac, 0 or 1 macroseta oj 4th leg . Ty(dildromina
18. Eleven pairs of lateral sctae . .. ... .. Seiulut
Ten pairs of lateral setae . . .. . . . . 19
19. Two pairs of medran setac . .. ..... . 20
Three pairs of media setae ... .. . .. Parasesulus
20. lhree pars of preanal sctac, Lb' expanded at lips . . Anthoseisa
Four pairs of preanal setae, Li pointed at tips . . Typhlodroniel l

GENus Dubininellhs WAINs'rEI
Dubaninells Wainstein, 1959.
DIAcNosis. Five pairs of dorsal setae, 1 pair of median setae, 8
pairs of lateral setae, mostly thickennd elongate and serrate, only S,
present and it on the dorsal scutum, 2 pairs of sternal setae, and 1 or
2 pairs of preanal setae; 4th leg with 1 to 3 macrosetae, (figs. 7 and 15).
TYPE SPECIES. Phytoseius comiger Wainstein, 1959.
KNrowN p.rraEs. D, corniger (Wainstein), D. macropilis (Banks),
D. baker (Chant).
Discussrox. Variation in preanal setae and macrosetae of the 4th
leg of this and the following genus indicates a species confusion that
will have to stand until further analytical work is done. Species of
this and the following genus lack lateral setae in the positions normally
occupied by Lr and L,. Of the median setac, only MI are distinguish-
able in both genera.

CF.NUs Phytoseia KIBACA
Phrtoseius Ribaga. 1902.
DIAGcosrs. Six pairs of dorsal setae, 1 pair of median selae, 8
pairs of lateral setac. some thickened, elongate, and serrate, 2 pairs
of scapular setae with S1 on dorsal scutum, 3 pairs of sternal setne
and 3 pairs of preanal setae; 4th leg with 1 to 3 macrosetae, (figs. 11,
16, and 19).
TYPE SPECIES. Ganosasits p/lunifer Canestrini and Fanzago, 1876
(by designation).
KNowx srPF.Is. P. plulnifer (Can. and Fan.), P. nauhatflensis De-
Leon.
DiscUSSrON. See discussion under Dubininellus.


1961








BULLETIN FLORIDA STATE MUSEUM


GENUS Typhloseiopsis DELFoN
Tlhloseiropsis DeLeon, 1959c.
DnAr.NosIs. Six pairs of dorsal setae, 2 pairs of median setae, 8
pairs of lateral setae some long, slender, and weakly plumose, some
short and simple, 2 pairs of scapular setae on interscutal membrane,
3 pairs of sternal setac, and 4 pairs of preanal setae, 4th log with 3
elongate macrosetae (figs. 11 and 16.)
TYPE, SP'ECtL. Typhloseiopsis theodoliticus DeLeon, 1959c (by
designation).
KNowN SPECIES. T. theodoliticus DeLeon, T. contigvus (CIhant).
DIrsaessrox. This genus and Amblydromnella have affinities with
both Aublyselinac and Phytoseiinae. They are placed here because
of the number of anterior lateral setac, median setae, and preanal
setac. Species of this genus lack lateral setae in the positions normally
occupied by 1,7 and Ls.

GENUS Amblydromella NW GENUS
)DIAGNosls. Six pairs of dorsal setac, 2 pairs of median setae, 10
pairs of lateral setae, 6 anterior to D4, most ot them short, some plu
,nose, 2 pairs of scapular setae on interscutal membrane, 3 pairs of
sternal setac, and 3 or 4 pairs of preanal setae; 4th leg with 3 elon-
gate, sometimes knobbed macrosetae (figs. 11 and Ifi.)
TYPE SPECIES. Typhlodromus fleschneri Chant, 1960.
KNOWN SPECIES. A. fleschneri (Chant), A. rickeri (Chant), A. c;l-
garis (Ehara), A. juniper (Chant.)
DiscussioN. See discussion under Typhloseiopsis.

GENUS Paraseiulella NEW GE.NTIS
DIAGNosis. Six pairs of dorsal setae, 2 pairs of median setac, S
pairs of lateral setac, some weakly plumose, 2 pairs of scapular setae
on interscutal membrane. S pairs of sternal setae, and 4 pairs of pre-
anal setae; 4th leg without macrosetae (figs. 11 and 20.)
TYPE siECIrs. TyIphlodromus burrelli Chant, 1959.
KNowN sPECICs. P. burrelli (Chant). P. perplexa (Chant), P. trop-
ica (Chant).
Discussiore. This and the following four genera form a distinct
group within the Phytoseiinae, all have 3 pairs of sternal setae and
subequal dorsal, median, and lateral setae graduated in size caudally.


Vol. ,








MUMA: PHYTOSEIID MITES


Were it not for significant differences in the number of median, lat-
eral, scapular, and preanal selae the species might be considered
congeneric. This genus lacks lateral setae in the positions normally
occupied by L, and L,.

GENUS Metaseiulus NEW GENUI
DrAcNosis. Six pairs of dorsal setae, 2 pairs of median setae, 9
pairs of lateral setae, the (ilh pair on a level with D,, all short and
simple, 1 pair of scapular setae on intersueital membrane, 3 pairs ol
sternal setae, and 3 pairs of preanal setae. 4th leg with no on one
inacroseta (figs. 11, 19, and 20.)
TyrP s PECIES. Typhlodromus calidiks Chant, 1957a.
KNOWN SrxEIES. M. calidus (Chant), M. nelsoni (Chant).
DzscUssTos. Species of this genus lack lateral setae hi the position
normally occupied by L,.

GENUS Nivoseiulus HuoHEs
Neoseuhr s Husghes 1948.
DIAGNOSIS. Six pairs of dorsal setae, 2 pairs ut median setae, 10
pairs of lateral setae, some weakly plimose, 2 pairs of scapular setae
on interscutal membrane, 3 pairs of sternal setae, and 3 pairs of preanal
sclta; 4th leg will no macrosetac (figs. 8, 11, and 20.)
TYPE SPECIES. Neoseiulus barker Hughes, 1948 (by designation).
KNowN seac.ms N. barkeri Hughes, N transtaaletsis (Nesbitt),
N. invectus (Chant), N. singularis (Chant).
DiscUssONs. In this genus setae I,, tend to lie mesad of L, but
not distinctly enough to be referred to as medians

CENUs NXtseciulella NEW GENUS
DIaGNosIS Six pairs of dorsal setae, 2 pairs of median setae, 11
pairs of lateral setae, all short and simple, 2 pairs of scapular setae on
interscutal membrane, 3 pairs of sternal setae, and 3 pairs of preanal
setae; 4th leg with one macroseta (figs. 91,11, and 19.)
TYPE svLr.is. Typhlodromus neshitti Womerslcy, 1954. Mono-
typic.
DiscussioN. This and the following genus have an additional pair
of lateral setae between the setae normally referred to as Lc and Lr.
In this genus these setae lie slightly hut not distinctly mesad of lie
associated lateral setae.








BULLETIN FLORIDA STA'I'E MUSEUM


GENUS Australisfiulus NEW GENUS
I)racnosTs. Six pairs of dorsal setae, 3 pairs of median setae, 11
pairs of lateral selac, 6 anterior to D, all short, some weakly plumose,
2 pairs of scapular setae on interscutal membrane, 3 pairs of sternal
setae, and 4 pairs of preanal setae; 4th leg with no macrosetae (figs.
10, 11, and 20.)
TYPE SPECIES. Kampirmodromus australicus Womersley, 1954.
Moinotypic.
DiscussioN. See discussion under Neoseiulella. The 3rd pair of
median setae lie anterior to D, and just posterior to M1.

GFNUiS C'lavidromiss NEW GENUS
Dracrosis. Six pairs of dorsal setae, 2 pairs of median setae, 10
pairs of lateral setae, all short, many plumose, 2 pairs of scapular setae
on interscutal membrane, 2 pairs of sternal setae, and 3 pairs of pre-
anal setae; 4th leg with 3 elongate rmacroselac (figs. 8, 15, and 16.)
TYPr SPCews. Typhlodromus jackmickleyi DeLeon, 1958.
KNowN SPcrIES. C. jackmnickleyi (DeLeon), C. peclinatus (Athias-
Ilenriot), C. hartlandrowei (Evans).
DiscussioN. See discussion under Anthoseius.

Gasss Antlwseius DeLeon
Anthoseius DeLeon, 1959d.
DrAc-osls. Six pairs of dorsal setae, 2 pairs of median setae, 10
pairs of lateral setac. with L,, elongate and expanded at tip, 2 pairs
of scapular setae on interscutal membrane, 2 pairs of sternal setae,
and 3 pairs of preanal setae; 4th leg without macrosetae (figs. 8,
15, and 20.)
TYPE SPECIES. Anthoseaius hibrtis DeLeon, 1959d (by monotypy).
DIscUSSION. This genus seems closely related to Clacidromus and
Clavidromina, from which it may he distinguished by the lack of
macrosetae, the number of preanal setae and the unusual develop
ment of 1,',.
(ENTTs C'lavidromina NEW GENUS
DlIANOsrs. Six pairs of dorsal setae, 2 pairs of median setae, 8
pairs of lateral selae, some flattened, spatulate and plumose, 2 pairs
of scapular setae on interseutal membrane, 2 pairs of sternal setae,
and 4 pairs of preanal setae; 4th leg will, S shot hooked macrosetae
(figs. 15 and 18.)


Vol 5








MUMA 'IIYTOSETID MYIES


TYPE SpECILs. Typhlodroimus eliipticus DeLeon, 1958.
KNowN sPCIEs, C, elliptica (1)eLeon), C. corna (DeLeon).
DiscussioN-. This and the following two genera are closely re-
lated; they may be distinguished by differences in the number of pre-
anal setae and in the number and form of the macrosetae of the 4th
leg. This genus lacks lateral setae in the positions normally occn-
pied by 1, and La.

CFNrs Amblydromnus NEW CaNUS
DInGa osis. Six pairs of dorsal setae, 2 pairs of median setae, 8
pairs of lateral setae, all simple, 2 pairs of scapular sotae on inter-
scutal membrane, 2 pairs of steinal setae, and 2 pairs ol preanal setac;
4th leg with 2 elongate macrosetae, both on tarsus (fig. 15.)
TYpr sPECEts. Typhlodromus stmilhi Schuster. 1957. Monotypic.
DIscussION. This genus differs from Typhlodromina by having
2 macrosetae on the tarsus of the 4th leg and 2 preanal setae. It also
lacks lateral setae in the positions normally occupied by l,, and Ls.

GENrs Typhlodromina NEW GEN S
I)IACNosis. Six pairs of dorsal setac, 2 pairs of median setae, 8
pairs of lateral setae, with 2 pairs of scapular setae on interscutal mem-
brane, 2 pairs of sternal setae and 4 pairs of preanal setae; 4th leg with
0 or 1 rnacroseta (figs. 15, 19, and 20.)
TYPE SPECIES. Iphidulus eonspicumts Carman, 1948.
KNOWN sPEcrs. 1 T. conspicua (Carman), T. pini (Chant), T. arbo-
rea (Chant), T. adjacentis (Delcon), T. columbiensis (Chant), T.
anchiulis (Kennett), T. herbertae (Chant).
DIscussior. Two groups of species can he distinguished within
this genus, those with a shield-shaped ventrianal scutun and those
with an elongate, sinuous-margined. ventrianal scutum. The striking
development of M1 and L, on T. adjacentis (DeLcon) may indicate a
third group. This genus lacks lateral setae in the positions normally
occupied by L, and Ls.

GE-xs Galendrominmus NEW GENUS
DIAGNosIs. Six pairs of dorsal setae, 2 pairs of median setae, 8
pairs of lateral setae, with L, elongate and plunose. I pair of scapular
setae on interscutal membrane, 2 pairs of sternal setae, and 4 pairs of
prnanal setae; 4th leg without macrosetac (figs. 15 and 20.)








BULLETIN FLORIDA STATE MUSEUM


TYPrE bPUEs. Typhlodromons alueolaris DeLeon, 1957, Mono-
typic.
DrscussloN. This genus is closely related to Galendromui front
which it may be distinguished by having only 8 pairs of lateral setae,
and M2 and Ls elongate, clavate, and senate. It also lacks lateral
setae in the positions normally occupied by i,7 andl I.

CENus (Gailendromus NMw GLNUS
DI)T(:NN S. Six pairs of dorsal setae, 2 pairs of median setae, 9
pairs of lateral setae, most of them subequal m length and often weak
ly plumose, 1 pair of scapular setae on interscutal membrane, 2 pairs
ol sternal setac, and 4 pairs of preanal selae; 4th leg with 0 or 1 slender
maeroseta (figs. 15, 19, and 20.)
TYPE SPECIEs. Typhlodronmts floridantu Muma, 1955.
KNOWN SPECIES. G. floridamns (MuITIa), G. grabit (Chant), C
annecten.s (DeLeon), G, longipilis (Nesbitt), G, occidentalis (Nesbitt),
G. poeni (Parrott), G. flumenis (Chant), C. mcgregori (Chant), G. iuni-
peri (DeLeon), G. carinulatus (DcLcon), G. luculentis (DeLeon).
DiscussioN. This distinctive genus has three species groups, one
with dorsals and laterals plumose and subequal in length, one with
simple dorsals distinctly smaller than the simple laterals, and one with
dorsal liny and simple, and the laterals plumose, Species of this
genus lack lateral setac in the position normally occupied by Lp.

GENUs Typhlodromus SCHEUTEN
Tspihld omus Schilut.Ir, 1857.
DIAGNOSIS. Six pairs of dorsal setae, 2 pairs of median setae, 9
pairs of lateral setae, 6 anterior to D,, all short and simple, 2 pairs
of scapular setae on interscutal membrane, 2 pairs of sternal setae,
and 4 pairs of preanlal setae; 41h leg with one macroseta (figs. 15
and 19.)
TYPE SPECIES. lyphlodronmus iP!Iri Sclhlntenf, 18.57 (by monotypy).
DisuSSIioN. It is unfortunate that this well known genus must
be restricted to the type species. Typhlodrom us, Typhloctonus, and
Typhlodronmella form a distinct group of genera, all of which have 2
pairs of median setae, the 6th pair of lateral setae on a level with or
anterior to D1, and 4 pairs of preanal setae. This genus lacks lateral
setae in the position normally occupied by L,.


Vol. 5








1MU1MA PHYTOSEIID MITES


CENUS T''yhltdromella -NEW GENUS
DIAGNOSIS. Six pairs of dorsal setac, 2 pairs of median setae, 10
pairs of lateral setae, the 6th pair on a level with Di, all short and
simple, 2 pairs of scapular selae on interscutal membrane, 2 pairs of
sternal setae, and 4 pairs of preanal setac; 4th leg with 0 or 1 macro-
setae (figs. 15, 19, and 20.)
TYPE sraclTs. Seiulus rhenanusn Oudemans, 1905.
KNowx sPEcrES. T. rhenana (Oudemans), T. bakeri (Garman), T
recki (Wainstein), T. caudiglans (Schuster).
DiscUssioN. See discussion under Typhlodrormus.

GEN-US Typhloctonus NEW GENUS
DIAGNOSIS Six pairs of dorsal setao, 2 pairs of median setac, 11
pairs of lateral setae, 6 anterior to D4, with Ln, plumose, 2 pairs of
scapular setae on intcrseutal membrane, 2 pairs of sternal setae and
4 pairs of prcanal setae; 4th leg without iracrosetac (figs. 9. 15, and
20).
TYPr sPECIES, Typhlodromu.rs tiliaruM Oudemans, 193).
KNOWN SPECIES T. tiliarumn (Oudelniis), T. acer (Collycr).
DiscussioN. See discussion under Typhlodromus Scheuten. This
genus always has an additional pair of lateral setae between the setae
normally referred to as L, anrd l,. These setae tend to lie mesad of
the associated lateral setae and may, when additional species have
been collected, prove to be median setae.

GENUS Sciulus BEnLESE
Seiiidus Birlese, 1887.
DIAGNosIS. Six pairs of dorsal setae, 2 pairs of median setae, 11
pairs of lateral setae, all short and simple, 2 pairs of scapular setae
on interscutal membrane, 2 pairs of sternal setae, and 1 pair of pre-
anal setae; 4th leg without macrosetae (figs. 15 and 20.)
Typr sPECIES. Seius hirmwtigemes Berlese, 1887 (hy monotypy).
KNOWN SPECIEs. S. hirsutigenus (Berlese), S. simplex Chant.
DISCussroN. Species of the genus possess an additional pair of
lateral sctae between the setae normally referred to as L, and L,.

GENUS Paraseiulus NEW C.ENisu
DIAGNOSIS. Six pairs of dorsal setae. S pairs of median setae, 10
pairs of lateral setae, all short and simple, 2 pairs of scapular setae on


1961









BULLETIN FLORIlnA STATE MUSEUM


interseutal membrane, 2 pairs of sternal setae, and 2 to 4 pairs of
preanal setae; 4th leg without macroselae (figs. 15 and 20.)
TYPE sPECIEs. Seiulius soleiger Hillaga, 1902.
KNowN sPwe E. P. soleiger (Ribaga), P. ecclesiasticus (DeLeon)
DIscussIoN. This genus is distinctive in the possession of pairs
of median setae with the additional pair located just posterior to D4.

LITERATLr CITED
Athias-Hennot, C.
1957. Phytosciidac ct Accoscjidac (Acarina, Gansasina) d'Algene I, genres
Blattilucius Keegan, Iphisoius Berlese, Amblyseius Bcrlese, Phby/tosus
jibaga, Phyloseiulus Evans. Bull Soc. Hist. Nat Afriqne Nord, vol 48,
pp. 319-952.
1958. Phytoseiidae et Aceoseirlda (Aannra, Gamsin.um d'Algerie II. Phyto
siidae: cle des genres, genres Amblyseius Bcrlese (suite) et Seiuhir Bic-
lese. Ibid., vol. 49, pp. 23-43.
1959 Acariens planticoles d'Algcric I Y tconhrihution au genre Amblbyseus
Berlese (PliLyoscmdac). II. Premiere listed d'Aetinochitinoss (Cheyleti-
dae, Caligonellidae, IIemisarcoptulda) Bull. Acad. Roy. Belgique (ser.
5), vol. 45, pp. 130-151.

Banks, N.
1905. Descriplhons of suoic new mites. Proc. Ent. Soc. Washington, vol. 7,
pp. 133-142.
Herlese, A.
1887. Acari, Myriapoda, et Scnrpiones in Italia reports. Fase. 41. Padi.a.
1914. Aean uouvi. Redia, vol. 10, pp. 118-150
1016. Ccnluria prilna-sesta di Acari nuooi. Ibid., vol. 12, pp. 19-67.
Chant, D. A.
1955, Notes on mites of the genus Typhlodrownus Scleutcn, 1857, (Acarina:
Laelaptidae), with descnplions of the males ot some species and ihe
females of a new species. Canadian Ent, vol. 87. pp. 496-503.
1957a. Descriptions of some phytosend mites (Acanna: Phytoseiidae) Prt I.
Nine new species fromn British Columbia with key to the species of
British Columbia. Part 1I. Hedrseritions of eight species described
by Berlese. Ibid., vol. 89, pp. 289-308.
1957b. Note on the status of some genera in the family Phytosendae (Acairina).
fIid, vol. 89, pp. 528-532
1957c. Dcscriptiuns of two new phytoseidr genera (Acarina PhlytUoendae), will
a note on the genus Phytosesus Ribaga, 1902. Ibid vul 89, pp. 857-
363.
1959. Phytos iid mites (Acarna: Phytosciidia). Part I. Brioomices of seven
species in ouilIuaslci n England Part II Taxonomic review of the
laniily Phytoseildae, with descriptions of 38 new species. Ibid., vol. 91,
supply. 12, 166 pp.


Vol. 5









MUMA: PIIYTOSEIID MITES


1960. Descriptions of five new species of mites from India. Ibid., vol. 92,
pp. 58-65.
Chant, D. A., II. Denmark, and E. W. Balcr
1959, A new subfamily Macroscimna nov. of the family Phvloseiidae (Acarina:
Gamasina). Canadian Ent., vol. 91, pp. 808-811.
Cunliffe, F., and E, W, Baker
1958. A guide to the predatory phytoseid mites of the United States. Pinellas
Biol. Ia;i. Publ., no. 1, Ip. 1-28.
DeLeon, D,
1957. Three new Typhlodromus from southern Florida (Acarina: Phytoseffdae).
Florida Ent., vol. 40, pp. 141-141
1958. Four new Typhlodromus fromi southern Florida (Acarna: PhytosPiidae).
Ibid., vol. 41, pp. 73-76
1959a. Seven new Typhlodronsus fron Mexico with collection notes on three
other species (Acarina. I'hytoseildac). Ibid., vol. 42, pp. 113-121.
1959b. The genus Typidadrorus in Mexico (Acarina: Phytoseiidae). Ibid., vol.
42, pp. 123-129
1959O. A new genus and three new species of phytoseiid mites from Mexico
with collection records on Phyloseitw plumlfer (C. and F.) and P.
macropilis (Banks). Ent. News., vol 70. pp. 147-152.
1959d. Two new phytoscid genera (Aicarina Phytaeiidae). Ibid, vol. 70,
pp. 257-265,

Evans, G. Owen
1952. On a new predatory uite of economic importance. iBull Ent. Res.,
vol. 43. pp. 379-401.
1954. The genus Iphiseitr Berl. (Acroina: Laclaptidlae). Proc. Zool. Soc.
London, vol. 124, pp. 517-526.
1958. An introduction to the British Mesostigmnata Acanna) with keys to the
families and genera Joui. Liinean Soc, vol. 43, pp. 208-259.

G rman, P.
1958. New species belonging to the genera Ambhlselus and Amblyseopsis with
keys to Amblyseiisi., Amblyseiopsis and Phitoseduestr Ann. Ent. Soce
Amer, vol., 1, pp 69-79

Hughes, A. M
1948. The mites associated with stored food products. Ministry of Agricul-
ture and Fisheres. London, H. M. Stationery Office, 168 pp.

Kennett, C.
1958. Some predaciousc mites of the subfamilies Plhtoseiinae and Acehnejinae
(Acarna: Phytossendae, Aceoejidae) from central California with descrip-
tions of new spnuies. Ann. Ent Snc. Amer., vol. 51, pp. 471-479.

Koch, C. L.
1839. Deutschlands Crustaceen, Myriapoden. nid Arachniden. Regensburg.









BULLETIN FLORIDA STATE MUSEUM


McGregor, E. A.
1956. The mites of citrus trees m southern California. Mem. South. Clhfornia
Acad. Sci., vol. 3, pp. 89-92.

Muma, Martin II.
1955. Phylosendae (Aeanna) associated with citrus in Florida. Ann. Ent
Soc. Amer., vol. 48, pp. 262-272

Nesbitt, H. H. J.
1951. A taxonurmic study if tie Phytosennae (Family Lalactidac) predaceous
upon Tctiraiihide of econorme imrnirtancc. Zoologische Verhlanrlrin-
gon, no. 12, pp, 1-64.

Oudemans, A. C.
1905. Bizunrleiheden over bIckcnde on nieuwe Aari. Tijdschr. voor Ent.
vol. 48, pp. Ixsvi-lxxxi.
1930. Acaralogische aantccrkcmngc 101-103. ILtom. Bcncht., vol. 8, pp
48-99.

Ribaga C
1902 Camaoidi plantnolli. Riv. di Patologa Vgetale vol. 10, pp. 175-178.
Srhenten A.
1557. Einiges uber Milbcn Arch, fur NanIrges., vol. 23, pp. 104-112.

Schustcr, R O.
1957. A ncw sccies of Tuphlodromtts from Calormia (Phytoseiidae: Ararina).
PanPacifc Ent., vol. 33, pp. 203-205.

Wainstem. A.
1958 New species if Typhiodromus (Parasitiformes: Phytoiseidae) fron Geor-
gia, (Russia). Tour Aced. (Grzia, vol. 21, pp. 201-207.
1959. A new sub-genus and species of thi genns Phvtoseius Ribagu, 1902
(Phytoscudue, Parasitifomnrr s Zool. Zhurn., vol. 38, pp. 1361-1365

Willmann, C,
1952 Die Milbentanna der Noorccnmsel Wangerooge. Verhoff. Inst. Meeres.
Brermrhtaven, voi. 1, p. 146.

Womersley, H
1954. Species ui the subfamily Phytoselnae (Acarina: Laclaptidaie) ihuI Als-
traha Australian Jnor. Zool., vol. 2, pp. 169-191








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