Official Organ 8 the Florida Et i ieg societyy
Vol. IX WINTER NTWL No. 4
A NEW DICRANOMYIA ALLIED TO DICRANOMYIA IM-
MODESTA OSTEN SACKEN-TIPULIDAE, DIPTERA
J. SPEED ROGERS,
Dept. of Biology, Univ. of Fla.
During the past few years of ecological and distributional
studies on the crane-flies, I have had considerable difficulty in
EXPLANATION OF FIGURES
Figure I. Male genitalia of D. gladiator 0. S., dorsal view.
Figure II. Male genitalia of D. immodesta 0. S., dorsal view.
Figure IIa. Gonopophysis of D. immodesta 0. S., side view.
Figure III. Male genitalia of D. iowensis sp. nov., dorsal view.
Figure IV. Wing of D. iowensis sp. nov.
B-Basistyle IX-Ninth Tergite
DD-Dorsal dististyle VM-Ventro-mesal lobe of basi-
VD-Ventral dististyle style
We recommend the goods advertised in The. Florida Ento-
mologist. Please mention Entomologist when you write our
THE FLORIDA ENTOMOLOGIST
distinguishing Osten Sacken's species, Dicranomyia immodesta
and gladiator. Part of the difficulty has been due to the ex-
istence of a third species, heretofore undescribed, whose geo-
graphic range and habitat distribution overlaps that of the
Dicranomyia iowensis sp. nov.
Resembles in venation, size, and general body appearance
Dicranomyia immodest and gladiator. Differs from both of
these species in that the thoracic notum and pleura are opaque,
the antennae wholly dark brown, and the male genitalia distinct-
Rostrum straw yellow, tinged with brown at the apex and
along the sides. Basal half of the first segment of the palpus
yellow, the distal half and the remaining joints a dull dark
brown. The antennae are dark brown thruout; the first basal
joint long cylindrical, the second hardly half as long, the joints
of the flagellum elliptical, with a few short setae and a thin
pubescence. The vertex bright chestnut brown with a silvery
reflection; occiput dark brown with a narrow silvery line along
the margin of each eye.
The thoracic notum is a dull yellowish brown except that the
lateral margins of the prescutum are a light opaque yellow. A
single central dull brown stripe is well marked on the pronotum
and anterior half of the prescutum but fades into the ground
color on the posterior part of the prescutum. The usual position
of the lateral stripes is frequently indicated by faint darker areas
on the posterior half of the prescutum. The lobes of the scutum
are faintly darkened; the scutellum and postnotum are slightly
duller and darker than the rest of the thoracic notum. The
pleura are a dull grayish yellow, somewhat lighter dorsally.
The coxae and proximal halves of the femora are dull yellow,
the distal halves of the femora and the tibia somewhat darker
and the tarsi brown. The base and stem of the halters are
yellow, the knobs dull, dark brown. The wings are entirely
clear, save for a very faint, small, ovoid brown stigma. The
veins are brown, the venation (figure IV) quite like that of
The tergites of the abdomen are dull brown, the sternites yel-
low, more or less suffused with brown. The margins of the
sternites are slightly shining. The genitalia of both male and
female are yellow; altho dull, this yellow is conspicuous in con-
trast to the brown abdominal tergites. The ninth tergite of the
male genitalia is broad and short with a deep, rounded, caudal
notch. The rounded lateral lobes produced by the notch are
chitinized on their caudal margins which bear about fifteen long,
yellow setae. The basistyles are a little longer than broad, thinly
covered with long, yellow-setae. From their ventro-mesal mar-
gins large fleshy lobes, about as long as the basistyle itself,
project caudo-ventrad, almost parallel from the base to apex.
These lobes are covered with a moderate pubescence and bear
numerous setae, particularly at their apices. The dorsal dis-
tistyle is an arcuated, cylindrical, chitinized rod, slightly dilated
at the base and just before the apex. Beyond the second slight
dilation it tapers abruptly to a short, stout, straight, apical
spine. A chord drawn from apex to base of the dorsal dististyle
is very nearly equal to the length of the basistyle. The ventral
dististyle is a large, inflated, ovoid lobe covered with a short
pubescence and bearing rather scattered setae of moderate
length. At midlength it is a little less in diameter than the
chord of the dorsal dististyle and is a little less than twice as
long. On the mesal margin, about one fourth of its length from
the proximal end, the ventral dististyle bears a prominent, fleshy
rostrum, curved dorsocephalad. Near the base of the rostrum,
on its caudo-dorsal face are two short, stout, chitinized spines
set close together in a common groove. These spines are almost
exactly equal in length. The cephalic face of the rostrum, near
its tip bears five or six stout setae. The penis guard is long
and subcylindrical. It narrows from a dilated base to a slender
rod but becomes slightly dilated just before the faintly bilobed
apex. The gonopophyses are prominent flat hooks, whose bases
form vertical plates on either side of the penis guard and whose
apices are directed dorsad. Between the base and apex each has
a semicircular depression like the blade of a sickle, whose dorsal
and concave edge is gently and slightly serrate.
The ovipositor is but slightly different from that of immodesta
or gladiator, slightly shorter and more slender than in gladiator,
the tergal valves more arcuated than in immodesta.
Holotype, male, Poweshiek Co., Iowa, Sept. 18, 1920 (Field
Cat. No. 52).
Allotype, female, topotypic.
Paratopotypes, 4 males; paratypes: Poweshiek Co., Iowa, 3
males, 2 females, Oct. 10, 1920; 1 female, June 2, 1920; 1
female, Sept. 5, 1920. Hardin Co., Iowa, 2 females, May 20;
1920; 4 males, 2 females, May 21, 1920; 3 males, 4 females,
THE FLORIDA ENTOMOLOGIST
May 22, 1920. Harrison Co., Ind., 5 males, June 18, 1921; Jeffer-
son Co., Ind., 1 male, June 11, 1921; Washtenaw Co., Mich., 1
male, Aug. 6, 1921; 1 male, Aug. 24, 1921; 2 males, July 12,
1922; 1 male, June 6, 1922 (T. H. Hubbell); 1 male, Aug. 17,
1922 (F. M. Gaige).
Part of the paratypes from Indiana and Iowa are placed in
the collection of Dr. C. P. Alexander; the holotype, allotype and
other paratypes are in the collection of the Museum of Zoology
of the University of Michigan.
Figured with present species are the genitalia of the males of
D. immodesta O.S. and D. gladiator O.S. as I have identified
these species from Osten Sacken's descriptions and his figure
of the male genitalia of D. gladiator. The characters shown in
these figures are constant in the series of each of these species
that I have before me and the differences in body markings:
three stripes on the prescutum of gladiator, one stripe on the
prescutum of immodesta; the mesosternum of gladiator with
rounded brown spots between the fore and middle coxae, the
mesosternum of immodesta unmarked, fits in each series with
the genitalia figured. There is a slight discrepancy between the
male genitalia figured by Osten Sacken for gladiator and that fig-
ured for the species I am identifying as gladiator. I believe that
this discrepancy is not greater than is to be expected when it is
remembered that Osten Sacken drew his figure from observa-
tions on the living insect, while the present figure is made from
a mount cleared in KOH and drawn as seen with a compound
Dicranomyia iowensis would seem, from the slight data now
available, to be somewhat more western than immodesta or
gladiator. Altho taken with these two species in Washtenaw
Co., Michigan it was far less common than either. In southern
Indiana, iowensis is far less common than gladiator but not so
rare as immodesta. However, southern Indiana has other sup-
posedly western crane-flies, Gonomyia kansensis Al, Tipula
flavibasis Al. and is close to the southern limits of D. immo-
desta. In Iowa neither gladiator or immodesta were taken in
the two localities where iowensis was common.
The immature stages of iowensis are unknown, the adults
have been taken in situations much like those from which gladi-
ator and immodesta have been commonly .found, moist flood
plains of small streams, wet grassy areas near springs, and
from grassy, slightly shaded ravines.
TWO NEW THYSANOPTERA FROM CUBA
J. R. WATSON
CEPHALOTHRIPS MERRILL N. SP.
Measurements-Total body length 0.87 mm. Head, length 0.14 mm, width
0.11 mm; prothorax, length 0.10 mm, width (including coxae) 0.18 mm;
pterothorax, width 0.177; abdomen, greatest width 0.16 mm; tube, length
0.08 mm, width at base 0.055 mm, at apex 0.025 mm; Antennae, total
length 0.25 mm.
Segment ..............-- .............. 1 2 3 4 5 6 7 8
Length ................................ 18 36 40 41 40 35 31 19
W idth ................................... 25 23 21 22 22 19 17 11 microns.
Color an almost uniform light olive gray (Ridgeway's color standard);
head and tip of abdomen darker, antennal segment 3 and all tibiae and
tarsi lighter except a black spot near the tips of tarsi; eyes and ocellar
crescents deep red and very conspicuous. Head a little longer than wide,
broadly rounded in front except for a projection of the vertex between
the basal segments of the antennae; cheeks gently arched, slightly con-
verging posteriorly, vertex smooth without bristles except the rather long
(about as long as the eyes) but very slender, pointed post-oculars and
two pairs of minute ones along the margins of the eyes, one directly be-
hind and one in front of each posterior ocellus. Eyes rather small, not
protruding, non pilose. Ocelli large, the posterior pair situated opposite
the anterior third of the eyes, the anterior directed forward. Mouth cone
short, reaching the middle of the prosternum, and rounded at the tip.
Antennae nearly twice as long as the head. Segment 2 short barrel-shaped
with a broad peduncle; 3, top-shaped; 4, obovate; 5, oval; 6, cylindrical;
7, cylindrical but tapering somewhat apically; 8, conical, broadly united to
7; 3-6 with short narrow pedicels, 8 with a somewhat broader one: 1,
concolorous with the head; 2, lighter at apex; 3, much lighter except ex-
treme base (but pedicel light); 4, about concolorous with the head; 5-8,
darker, deep olive gray. Bristles and sense cones short, pale and incon-
Prothorax, somewhat wider than the head, shorter than the head; sides
rather sharply diverging posteriorly. A rather long but pale bristle on
each posterior angle, an equally long one midway between this and the
median dorsal line. A pair of minute ones near middle of posterior margin.
Pterothorax at the anterior margin about as wide as the prothorax (in-
cluding coxae) but sides converge sharply posteriorly. Winig membrane
pale gray, constricted in the middle, reaching to about the 8th abdominal
segment, sparsely provided with rather long hairs, 4 inter-located ones.
Legs rather short. Fore femora .considerably enlarged. Fore tarsi un-
Abdomen rather slender, sides nearly parallel to about 8th segment then
tapering abruptly to tube. Bristles rather short, pale and inconspicuous;
those on the last segment larger. Terminal ones but little longer than the
Described from a single male taken from a scale-infested cocoanut from
Cuba by George B. Merrill of the Florida State Plant Board.
The color of this insect and the shape of the pterothorax, will enable
it to be readily told from the other two species of this genus.
THE FLORIDA ENTOMOLOGIST
The following key will enable one to readily separate the species:
a.-Antennal segment 7 broadly united to 6........--.......monilicornis Reuter.
aa.-Antennal segment 7 pedunculate.
b.-Color dark brown; wings very short or entirely lacking; pterotho-
rax narrower than prothorax, sides nearly straight and parallel, even;
postoculars blunt .................................................................errans M oulton.
bb.-Color light gray; wing membrane reaching abdominal segment
8; pterothorax wider than prothorax (exclusive of coxae), sides
sinuate and sharply converging posteriorly; postoculars pointed
merrilli n. sp.
FRANKLINELLA CEPHALICA BRUNERI N. VAR.
Measurements: Total body length (average of 33 individuals) 1.02 mm.
(varies from .82 to 1.25 mm.). Head, length 0.11 mm., width 0.16 mm.;
prothorax, length 0.14 mm., width 0.19 mm.; mesothorax, width 0.27 mm.;
abdomen, greatest width .28 mm.
Antennal segments-................| 1 2 3 41 5 6 7 8
Length ........................... 26 1 42 58 54 41 51 9 12
Width i-.......................- 25 25 23 23 20 20 8 6 microns
Total length 0.28 mm.
Color, almost uniform yellow, thorax and end of abdomen a shade dark-
er than the basal segments, head considerably lighter, pale yellow. No
orange or brown color anywhere on the body except the yellowish orange
ocellar crescents and a small orange spot on the extreme tip of the abdo-
men. Eyes black by transmitted light, red by reflected.
Head nearly half again as broad as long, considerably retracted into pro-
thorax; cheeks slightly arched, bearing a pale short spine at about the
middle; vertex smooth; frons depressed. Postoculars and a pair of bristles
in front of each posterior ocellus nearly as long as the eyes, sharply
curved, brown and conspicuous. A pale, slender, inconspicuous bristle at
the inner posterior angle of each posterior ocellus, and a pair of even
smaller bristles'in front of the anterior ocellus. Eyes rather large, near-
ly half as long as the head, not protruding, pilose, facets large. Ocelli
large, pale, posterior pair situated a little in front of the posterior border
of the eyes, anterior directed somewhat forward into the frontal depres-
sion. Mouth cone long and slender, almost reaching the mesosternum.
Maxillary palpus 3-segmented, the basal segment the longest.
Antennae 2.5 times as long as the head. Segment 1 short, cylindrical;
2 barrel-shaped with a wide peduncle, produced dorsally and bearing at
the apex of the elevation two heavy bristles. These bristles are not as
heavy as in F. cephalica masoni and the elevation is much less marked and
does not project over the base of segment 3; 3 widest at about two-thirds
its length, thence tapering uniformly with nearly straight sides to a nar-
row peduncle with several constrictions and to a broad apex. It bears a
colorless dorsal, forked, trichome and below the base of this a pair of
bristles which are fully as heavy and considerably longer than the corres-
ponding ones on segment 2; 4, similar to 3 in shape but peduncle wider
and shorter and sides not as straight. This segment also bears a forked
trichome but on the inner side; 5 much the smallest of the intermediate
segments with a narrower peduncle than 4; 6 conical, but little constricted
at the base; 7 cylindrical, considerably shorter than 8; 8 conical. 1 al-
most colorless, 2 almost uniformly light brown except the paler peduncle;
3 light Marguerite yellow (Ridgeway's color chart) clouded with darker
gray in the apical third; apical half of 4 and 6 mummy brown (Ridgeway)
basal half of 4 and often all of 5 Marguerite yellow, 5 sometimes clouded
with brown in apical third, 7 and 8 a little lighter than 6.
Prothorax wider than long and wider and longer than the head, sides
strongly arched. One bristle on each anterior angle and a pair on each
posterior angle are unusually large and strongly curved. The longest on
the posterior angle often reaches a length of 80 microns or nearly half
the width of the prothorax; another stout bristle (but only about a third
as long) at the anterior angle; on the anterior margin are a pair of
bristles nearly as stout and four pairs of minute colorless ones.
Pterothorax much wider than the prothorax, anterior angles evenly
rounded to the posterior margin of mesothorax. Metathorax narrower,
sides nearly straight and parallel. Two large bristles and two smaller ones
between the wings and two large ones and about 12 smaller ones along
the anterior margin. Legs light brownish yellow, considerably lighter than
the body. Tibiae provided with a pair of stout spines near the apex.
Wing membranes reaching to about abdominal segment 9, fore pair very
light grayish yellow, provided with heavy bristles, about 25 on costa,
19-21 on anterior vein, and from 14 to 21 (usually 19) on posterior.
Abdomen, rather short and thick, widest at about segment 8, thence
rounding rapidly to tenth segment. The posterior segments (5-9) pro-
vided with heavy, but comparatively short, curved bristles at the posterior
angles. The 10th segment split open for not over a fourth of its length,
tipped with orange at the extreme apex. Provided with about a dozen
large straight brown bristles which extend far beyond the tip.
Male. Much smaller than the female, about 0.8 mm., pale yellow. Head,
length 0.11 mm., width 0.15 mm.; prothorax, length 0.15 mm.; width 0.19
mm.; mesothorax, width 0.20 mm.; abdomen, width 0.15 mm. Antennae,
segment 1, 25; 2, 39; 3, 49; 4, 46; 5, 38; 6, 46; 7, 7; 8, 11 microns.
Total length 0.26 mm. Wings with about 22 strong bristles on costa, 16
on anterior vein and 13 on posterior. Second segment of antennae much
lighter in color than in female; lighter than the first. Testes yellow-
ish brown by transmitted light, yellow by reflected.
Larvae brownish yellow, legs and tip of abdomen lighter. Eyes dark.
Described from thirty females and four males collected by Dr. S. C.
Bruner in Santiago de las Vegas and on the Peninsula de Guanahacabibes,
Cuba, on oranges, avocadoes, hibiscus, Moringa. Type in the author's col-
Close to F. cephalica melanommatus Bagnal, of which it is probably only
a Cuban race, but differs in the color and form of the second antennal
segment which projects but little dorsally and not at all forward over
segment 3, in the larger number of spines on the posterior vein of the
fore wings (in both sexes) and in the split end of the last abdominal
segment, and especially in the long, stout, curved bristles.
It can be told at a glance from F. cephalica masoni by the lighter color
and the character of the second antennal segment.
Official Organ of The Florida Entomological Society, Gainesville,
J. R. W ATSON-...-..-..-........--.........................---......-................... -Editor
WILMON NEWELL ........-.....-..-..-..........-...... ....-.... -Associate Editor
A. N. TISSOT ---....--...--..............---..-- ......-..-...Business Manager
Issued once every three months. Free to all members of the
Subscription price to non-members is $1.00 per year in ad-
vance; 35 cents per copy.
MEETINGS OF THE SOCIETY
Dec. 11, 1925.-Meeting called to order by Vice-President
Bates. Members present: Bates, Berger, Bratley, Hubbell,
Merrill, Rogers, Watson; visitors: Grossman, Inman, Tissot.
Dr. M. D. Leonard of Orlando, entomologist of Wilson Toom-
er Fertilizer Co., was elected a member of the society.
Mr. Watson gave the paper of the evening on "The Reactions
of Whiteflies to Light, Heat, Gravity, and Certain Chemicals
with Some Comparisons with the Behavior of Scale Crawlers
and Rust Mites to the Same Stimuli."
Jan. 8, 1926.-Meeting called to order by Secretary Bratley.
Members present: Berger, Bratley, Gray, Hubbell, Merrill, Wat-
son; visitors: Grossman, Inman, Tissot.
New members elected were' E. F. Grossman, an Entomologist
of the Experiment Station in charge of boll weevil investiga-
tions; M. T. Inman, of the Kay Research Company, who is ex-
perimenting with insecticides, and A. N. Tissot, Assistant Ento-
mologist of the Experiment Station.
The following officers were elected for the year: President,
Prof. John Gray; Vice-President, E. F. Grossman; Secretary, H.
E. Bratley; Treasurer and Business Manager of the Entomolo-
gist, A. N. Tissot; Editor, J. R. Watson.
The paper of the evening was by Dr. E. W. Berger on "Some
WINTER NUMBER 57
THE CITRUS APHID IN CUBA
The following letter from Mr. J. B. Anderson of Santa Clara
in regard to the status of the new citrus aphid in Cuba should
be of interest to our readers:
"Here in this province (Santa Clara) I have been pretty well
over the groves, and find it universal; just this morning I was
out to see some little recreation farms, owned by friends here
in town. One place has about 20 trees, and the other, at a dis-
tance 10 miles removed from the first, has about 100 trees.
Both are badly infested, although there is not active work go-
ing on now as there is no new growth.
"In this province, near the town of Manacas, near the Man-
tanzas province line, there are six German-American orange
growers, with a total of about 100 acres of orange groves scat-
tered over a dozen square miles, and all the groves have the
aphis, being dormant at present, but having been worked pretty
thoroly as shown by the hardened curled leaves.
"When I was in Camaguey a month ago, a Cuban grower
with about 50 acres told me that all his trees were infected and
also that all the other groves around were in the same shape;
these are within 5 miles of Camaguey city.
"The La Gloria district, where my groves are, was gone over
very thoroly by me just before I wrote you the first of the year;
practically every grove is infected and much damage done.
"Thus I know personally that it has taken full charge of our
groves in these central provinces.
"As to how long it has been a pest, I can say that I have
noticed the characteristic tight curling of the leaves for the
past three years, and they tell me in La Gloria that it has been
there for four years, but never abundant enough to excite com-
ment even. We just supposed that it was curling by dry weath-
er or something like that. Just this year it shot out like wild-
fire all at once in all groves."
Mr. A. C. Mason, of the Bureau of Entomology, U. S. Dept.
of Agric., who has been stationed at Lindsey, Calif., where he
has been studying the California orange thrips, has been trans-
ferred to Hawaii, where he has taken up the study of the Medi-
THE FLORIDA ENTOMOLOGIST
NEW THYSANOPTERA FROM FLORIDA-XIII
J. R. WATSON
92. Podothrips semiflavus Hood.
Mr. George B. Merrill on October 1, 1924 collected a number
of thrips of this species from a swamp grass collected at Davie
by Bowers and Link of the State Plant Board. It has been re-
ported from Cuba and Porto Rico on sugar cane. The writer
has received it from the Virgin Islands when it was collected
on Para grass by Mr. C. E. Wilson.. The present find extends
its known range to Florida and adds a new host.
93. Chirothrips obesus var. hubbelli n. var.
Female. Abdomen, pale brownish yellow (warm buff-Ridgeway's color
standard) tip, darker (segment 10 raw umber); head raw umber; thorax
yellowish brown (prothorax buckthorn brown, pterothorax mummy brown);
legs empire yellow, all femora and middle and hind tibiae shaded with
brown on outer side; antennal segments 1 and 2 lemon chrome, 3 pinard
yellow, 4 buffy brown, 5 raw umber, 6 to 8 blackish brown.
Measurements: Total body length 0.7 mm.; head, length 0.09 man.,
width 0.114 mm.; prothorax, length 0.125 mm., width (including coxae)
0.25 mm.; mesothorax, width 0.28 mm.; metathorax, width 0.25 mm.; ab-
domen, greatest width 0.28 mm.
1 2 3 4 5 6 7 8
30 43 35 30 28 44 13 12 microns
Total length 0.23 mm.
Head, considerably wider than long, broadest across the posterior mar-
gin of the eyes, cheeks well arched, short, about a third the length of the
eyes, front produced into a triangle in front of the eyes, the two front
sides of this triangle (across the bases of the antennae) almost straight
but slightly produced between bases of antennae, tip with minute notch;
surface with several rather prominent longitudinal striations and a sin-
gle pair of bristles near the anterior angles of the eyes.
Eyes rather large, dark, pilose. Ocelli situated more anteriorly than
in most species of the genus, posterior pair about opposite the middle of
eyes, bordered by wide dark red crescents. Mouth cone reaching rather
more than half way across prosternum.
Antennae 2.5 times as long as head. Segment 1 rounded, about three-
fourths as long as wide; 2 inverted foot-shaped, but the "toe" very short,
the axis and the width along apical margin about equal; 3 pyriform with
a short peduncle; 4 and 5 suboval. Very thick, curved, colorless, sense
cones on inner margins of segments 3 and 4, a few short, inconspicuous
bristles on segments 5 to 8.
Prothorax trapezoidal in shape, sides diverging sharply posteriorly, quite
deeply indented above fore coxae. Both anterior and posterior angles
sharp, destitute of conspicuous bristles. Pronotum with anastomozing
striae and about 12 pairs of small bristles.
Sides of mesothorax very convex, of metathorax only slightly so and di-
Fore legs short and much thickened.
Wings very long (length ten times the greatest width), much exceeding
the tip of the abdomen, curved, shaded with gray, fore pair deeply so
but with a clear area just above the base, sparsely fringed with long
-irs for its entire length. Posterior veins of. iore wings branch off from
the anterior at the apex of the clear area (about a fifth of the length)
bearing but two spines, one near the middle and another towards apex.
Anterior vein with four spines, two near the base and two near apex.
Abdomen short and thick. Segment 10 split open above. Segment 9
also narrow. Spines on segments 8 to 10 moderately long. Receptaculum
seminis over base of ovipositor bright reddish orange.
Described from a single female taken in Dixie County, Florida, from
grass and roots at margin of a cypress pond, by T. H. Hubbell, Nov. 28,
1925. Type in the author's collection.
Close to E. obesus Hinds, but differs in the shorter head, the more an-
terior position of the ocelli, the longer antennae, the less compressed first
antennal segment, the shorter projection on the second segment, the di-
verging sides of the metathorax, the wings with a complete fringe of hairs
and fewer bristles on the veins, and the absence of a long spine on the
posterior angle of the prothorax. From C. spinceps Hood it differs in size,
the fewer spines on the front of the head, the longer prothorax and the
shape of the fore tibiae.
KEY TO NORTH AMERICAN SPECIES OF CHIROTHRIPS
1. A single longitudinal vein in each fore wing..............................mexicanus.
2. Two longitudinal veins in each fore wing; fore wings brown.
a. Two long, stout spines at each posterior angle of the prothorax.
b. Antennal segment 6 about as long as 4 and 5 together.
bb. Segment 6 shorter than 4 and 5 together...------.............manicatus.
aa. A single long, stout spine at each posterior angle........--. spiniceps.
aaa. Spines at the posterior angles of the prothorax only moderately
b. Body uniformly brown.
c. Only one moderately heavy bristle on each posterior angle
of prothorax; antennal segment 5 nearly as thick as 4.- -
cc. Two shorter bristles on each posterior angle of prothorax,
antennal segment 5 much smaller than 4.
THE FLORIDA ENTOMOLOGIST
bb. Abdomen lighter.
c. Abdomen gray'brown or yellowish brown; length 0.78 mm.
cc. Abdomen yellow.
d. Thorax yellow ochre shaded with gray; length about
1.1 mm.; front of head with numerous small
dd. Thorax yellowish brown; length 0.7 to 0.8 nm.; front
of head with one or two pairs of spines.
e. Posterior ocelli opposite posterior border of eyes;
each vein of fore wing with 4 to 6 spines.-
ee. Posterior ocelli opposite middle of eyes; anterior
vein with 4, posterior with 2 spines.
94. Liothrips muscorum n. sp.
Color, including even the tarsi of the legs, a uniform dark brown, tho-
rax and abdomen with much blood red hypodermal pigment, antennal seg-
ments 3-6 mostly yellow.
Measurements: Total body length 1.17 mm. Head, length 0.22 mm.,
width, 0.185 mm.; prothorax, length 0.127 mm.; width (including coxae) 0.29
mm.; pterothorax, greatest width 0.33 mm.; abdomen, greatest width 0.34
nm.; tube, length 0.15 mm., width at base 0.06 mm., at apex 0.037 mm.
Antennae, segment 1, 30; 2, 43; 3, 80; 4, 74; 5, 63; 6, 61; 7, 51; 8, 32
Total length, 0.44 mm.
Head but little longer than wide, widest some distance behind the eyes,
cheeks arched, converging quite sharply posteriorly, dorsal surface fine-
ly striated. Postocular bristles about .6 the length of eyes, blunt. Eyes
rather large but diameter somewhat less than the distance between them,
dark, not pilose. Ocelli straw colored, posterior ones contiguous to the
inner margins of the eyes in front of their middle, the anterior one fac-
ing forward, inconspicuous, on a line with the anterior border of the eyes.
(To be continued.)
The State Plant Board has at the Lake Alfred Station nearly
a thousand of the Chinese lady beetles (Leis sp.) for distribu-
tion to the growers as soon as the citrus aphid becomes suffi-
ciently abundant to insure a constant food supply. These lady
beetles have been bred by Mr. W. L. Thompson. There are also'
a few hundred of these beetles at the Experiment Station at
Gainesville where they have been bred by Mr. H. E. Bratley.
At both places they have been mostly dormant during Decem-
ber and January.