Title: Florida Entomologist
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Permanent Link: http://ufdc.ufl.edu/UF00098813/00324
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Title: Florida Entomologist
Physical Description: Serial
Creator: Florida Entomological Society
Publisher: Florida Entomological Society
Place of Publication: Winter Haven, Fla.
Publication Date: 1924
Copyright Date: 1917
 Subjects
Subject: Florida Entomological Society
Entomology -- Periodicals
Insects -- Florida
Insects -- Florida -- Periodicals
Insects -- Periodicals
 Notes
General Note: Eigenfactor: Florida Entomologist: http://www.bioone.org/doi/full/10.1653/024.092.0401
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Bibliographic ID: UF00098813
Volume ID: VID00324
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: Open Access

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Florida Entomol i&t
Official Organ of the Florida EntomoloWj society

VOL. VIII AUTUMN NUMBER No. 2
September, 1924


THE CHRYSOMELIDAE OF FLORIDA
By W. S. BLATCHLEY
Dunedin, Florida
(Continued from page 7)

XLII. Oedionychis Latreille.
Elongate-oval, glabrous species of medium size (4.5-7 mm.)
and variable color, having the front coxal cavities open behind,
elytral punctures confused, first joint of hind tarsus slender, last
one globosely inflated. Adults occcur on flowers and foliage of
various plants, especially Compositae.
*150 (15865). 0. gibbitarsa (Say).-"Enterprise and Cedar Keys, com-
mon" (Sz.). St. Augustine (Ham.). Pablo Beach, Sept. 5 (Davis Coll.).
Moore Haven, Mch. 22 (Bl. 1923), swept from vegetation in marshy ground.
All Florida specimens that I have seen have the elytra a deep cobalt-blue in
hue, not greenish as in the North.
*151 (15867). 0. thoracica (Fabr.).-Haulover, one specimen (Sz.).
Crescent City (Sz. Ms.). L. Worth (SI.). At hand from Gainesville and
Dunedin, Nov.-Mch.; scarce about Dunedin, flying along the roads.
152 (15868). 0. vians (Ill.).-"Common" (Sz.) St. Augustine (Ham.).
No other State records.
*153 (15869). 0, concinna (Fabr.)-"Rare" (Sz.). Crescent City (Wic.).
At hand from Ormond, Palmdale and Dunedin, Feb.-Apr.; occurs beneath
boards and other cover along the margins of ponds, one being dug out of
the muck (Bl. 1914).
*154 (15873). 0. fimbriata (Forst.).-Northern part of the State, south
to Ft. Myers. Gainesville on oak, Apr. 18 (Wat.). At hand from Sarasota
and Dunedin, Nov.-Apr.; taken on flowers of thistle and swept from tall
grass along the sandy margins of ponds. All specimens seen are of the
vittate variety formerly listed as circumcincta Cr.
*155 (15875). 0. petaurista (Fabr.).-"Tampa, very rare" (Sz.).
Crescent City and Haw Creek (Sz. Ms.): St. Augustine (Ham.): Ft.

We recommend the goods advertised in The Florida Ento-
mologist. Please mention Entomologist when you write our
advertisers.











THE FLORIDA ENTOMOLOGIST


Myers (Wic.). Gainesville, eating strawberry leaf, Feb.; on bitter-weed,
Helenium, Aug. (Wat.). Varies much in size (5.5-8 mm.) and width of
dark stripes.
*156 (15877). 0. miniata (Fabr.).-Northern part of State south to
Ft. Myers. Frequent at Dunedin, Nov.-Apr., on dwarf huckleberry and
other low vegetation.
*157. (15879). 0. ulkei Horn, 1889, 188.-Type from "Florida." Haul-
over, Crescent City, Orange and Sumter Cos. (Sz. Ms.). Enterprise
(Wic.). Dunedin, Feb. 24-Apr. 10; occurs on flowers of fetter-bush, Des-
mothamnus nitidus (Bartr.) and other Ericads in low damp woods (Bl.
1923).
158 (15883). 0. indigoptera Lec., 1878, 416.-Type from Tampa. No
other State record. "Occurs in Georgia and Florida" (Horn, 1889.)
*159 (- ). 0. saltatra Blatch., 1923, 32.-Types from Dunedin and
Sanford. Frequent about Dunedin in spring on low herbage in moist ground;
at porch light, June 15.
*160 (15887). 0. sexmaculata (Ill.).-Enterprise, rare (Sz.). Gainesville,
abundant on foliage of ash, Apr. 5 (Doz.). At hand from Sanford, Apr.
4. A common species in Indiana.
*161 (15888). 0. suturalis (Fabr.).-Throughout the State, south to Ft.
Myers. At hand from six stations. Frequent about Dunedin, hibernating
in Spanish moss and occurring in spring on flowers of the gallberry,
Ilex glabra (L.), and other shrubs.
162 (15869). 0. quercata (Fabr.).-St. Augustine (Ham.); probably re-
fers to the next; thorax wholly pale.
*162a (- ). 0. quercata obsidiana (Fabr.).-"Baldwin and Enter-
'prise, common," (Sz.). Sanford, Mch. 30-Apr. 5 (Bl. 1923). This variety
has the thorax piceous with explanate side margins pale. Leng places it
as a synonym of quercata.
*163 (15890). 0. scalaris Melsh.-Northern part of the State, south to
L. Okeechobee. At hand from Sanford, Utopia and Istokpoga, Mch.-Apr.;
occurs on low Ericads near margins of lakes.

XLIII. Disonycha Chevrolat.
Oblong or oval medium sized (4-7 mm.) beetles of varied hue,
having the front coxal cavities open behind; thorax without a
transverse basal impression; hind tibiae not grooved; first joint
of hind tarsi short and rather broad, tarsal joints not inflated.
The adults feed upon herbs of various kinds and feign death
when disturbed.
164 (15895). D. pennsylvanica (Ill.).-"Common" (Sz.). Miami, Moore
Haven and Orlando (Kn.). The only records of the typical form for the
State. Perhaps apply to var. parva.
*164a (15895c). D. pennsylvanica conjugata (Fabr.).-Northern part of
the State, south to Moore Haven and Ft. Myers. At hand from six stations
and reported from many others. Common, where found, on various species
of smart-weed, Polygonum; also beneath decaying stems of pickerel-weed on
old pond sites. :
*164b (- ). D. pennsylvanica parva Blatch, 1921, 16.-Types from












AUTUMN NUMBER


Indiana and Sanford, Fla. At hand from Sanford, Pahoka, Palmdale and
Dunedin, Mch.-Apr., from the muck and grass roots about the margins of
cypress swamps. But little more than half the size of typical pennsylvanica,
and probably a distinct species.
165 (15896). D. quinquevittata (Say.).-Schwarz in his Florida list
records D. punctigera Lee. as "not rare." That name is made a synonym of
quinquevittata by Horn (1889, 314). No other mention from the State.
166 (- ). D. fumata Lec.-According to Scheffer (1919) the D. cren-
icollis (Say.) of Horn (1889) is this species. Under the latter name it is
mentioned by Schwarz (Ms.) as occurring at Jacksonville.
*167 (15898). D. caroliniana (Fabr.).-Enterprise and Capron (Sz. Ms.).
Lakeland, May 8 (Davis Coll.). At hand from L. Wales, Palmdale and
Dunedin. Swept in some numbers, Mch. 28, from the flowers of a tall St.
Johnswort at Palmdale. Rare at Dunedin on fetter-bush.
*168 (15901). D. glabrata (Fabr.).-Ormond, on oak (Bl. 1902); Dun-
edin Mch. 9, one specimen at each place. Gainesville, abundant on bull-
thistle, Apr.; riddling the foliage of pig-weed, Amaranthus, May (Doz.).
These the only State records.
169 (15902). D. abbreviata Melsh.-Recorded from numerous stations
in the northern half of the State. Gainesville, sweeping low herbage
Feb. 26 (Doz.); on golden-rod, Sept. (Wat.); these, in part at least, Oedi-
onychis petaurista (Fabr.). Scheffer (Ms.) doubts the occurrence of the
true abbreviate in Florida, but a specimen taken at Lake City, Apr. 18, is
in the Gainesville collection.
*170 (15902a). D. leptolineata Blatch., 1917, 143.-Types from Dunedin;
also taken at Lakeland and Istokpoga. Frequent on ferns in dense ham-
mocks and cypress marshes; also hibernating beneath cover along the bor-
ders of ponds. Described as a variety of abbreviata but evidently a dis-
tinct species.
171 (15906). D. triangularis (Say).-Gainesville, Apr. 15; sweeping low
foliage along a moist hammock edge, and hibernating under old logs (Doz.).
The only State record.
172 (- ). D. albida Blatch., 1924, 169.-Type in Davis collection;
taken by him on Big Pine Key, Sept. 18.
173 (15907). D. xanthomelena (Dalm.).-"Florida" (Horn, 1889). St.
Augustine (Ham.) as collaris (Ill.), a synonym.
*174 (15910). D. mellicollis (Say.).-Capron (Sz. Ms.). LaGrange
(Davis Coll.). Bradentown, Oct. (Wat.). At hand from Sanford, Lakeland
and Dunedin, Feb.-Apr.; scarce at porch light and beneath cover.
*175 (15911). D. collata (Fabr.).-Common along the sea-coast, where
it occurs beneath cover, between the roots of grass and on low vegetation
close to the water. At hand from Key West and Dunedin. Recorded from
many stations, but inland only from Enterprise (C. & L.).

XLIV. Argopistes Motschulsky.

Small (3 mm.), hemispherical black and red species resem-
bling Exochomus in general appearance; antennae gradually
clavate, front coxal cavities open behind.











THE FLORIDA ENTOMOLOGIST


*176 (15914), A. scyrtoides Lee., 1878, 416.-Types from "Florida."
Jupiter, on oak; Miami (Sz. Ms.). At hand from Biscayne Bay, Mch. 18,
taken by Mrs. Slosson. Mines the leaves of the Florida privet, Forestiera
porulosa (Michx.) (Sz. Ms.).

XLV. Haltica Geoffroy.

Small oblong-oval, copvex species (2-5 mm.), blue, dull yellow
or bronzed in hue, having the front coxal cavities open behind;
thorax with a transverse basal impression, this not limited at
each end. The species are numerous and some of them are in-
jurious to grape foliage and garden truck. The genus is a difficult
one and there is much confusion of synonymy.
*177 (15917). H. chalybea I11.-Throughout the State, recorded from
numerous stations. At hand from seven, including Cape Sable. Common
about Dunedin, Nov.-Apr., on foliage of wax myrtle, wild grape, etc., hiber-
nating in bunches of Spanish moss and beneath loose bark. Gainesville, on
plum blossoms, Feb. 18, wild grape, Feb. 27 (Doz.); velvet beans (Wat.).
Known in economic literature as the "grape-vine flea-beetle."
*178 (15918). H. nana Cr.-"South Carolina to Florida" (Horn, 1889).
Biscayne Bay (Sz. Ms.). Mt. Dora, Aug.; Gainesville, on Eupatorium
(Wat.). At hand from Gainesville (Fattig) and Dunedin. Rare at Dunedin,
Nov.-Apr., on foliage in sandy open woods. One of the smallest (2 mm.)
members of the genus.
*179 (15926). H. litigata Fall, 1910, 154.-Type from Enterprise.
Throughout the State; recorded as H. ignite (Ill.) from numerous stations.
At hand from nine localities, Nov.-Apr. Common on the water purslane,
Ludwigia palustris Ell.; also beneath debris and decaying vegetation about
the margins of ditches, ponds and lakes, and occasionally at porch light
(BI., 1923). Fall (loc. cit.) assumes that typical H. ignita is a "brilliant
coppery-golden form of the Middle Atlantic States," whereas litigata is
blue with protruding eyes and dull brown tibiae and tarsi.
*180 (15927). H. schwarzi Blatch., 1914, 141.-Types from Utopia on L.
Okeechobee. Taken also at Pahokee and Ft. Myers. Occurs on low vege-
tation'along the edges of lakes and streams. Piceous, strongly bronzed.
(4.2-4.5 mm.).
*181 (15928). H. vaccinia Blatch., 1916, 95.-Types from Dunedin. At
hand also from Caxambus and Ft. Myers. Common about Dunedin, Dec-Apr.,
on the flowers and foliage of dwarf huckleberry. Uniform dark coppery
red. (3-3.2 mm.).
182 (15932). H. vicaria Horn, 1889, 222.-"Massachusetts to Florida
westward to Colorado and Arizona" (Horn). No other record.
*183 (15942). H. marevagans Horn, 1889, 226.-"Along the seacoast
region from Florida to New Jersey" (Horn). Pablo Beach and New Smyr-
na. (Sz. Ms.). Gainesville on Oenothera, riddling the plant'; also on
Jussieua Apr.-Sept. (Doz.); maple, June, Helenium July, Solidago Oct.
S(Wat.). Scarce on Hog Island, opposite Dunedin, Feb. 5-Mch. 25, on the sea
purslane, Sesuvium maritimum Walt. (Bl. 1917); also at porch light, July 5.










AUTUMN NUMBER


184 (15953). H. floridana Horn, 1889, 230.-Types from Biscayne Bay.
No other record.
185 (15954). H. burgessi Cr., 1873, 71.-Types from Key West. No
other record. The smallest Haltica (1.5-1.7 mm.) known.
*186 (15955). H. rufa III.-Throughout the State. At hand from six
localities, Jan.-Apr. Common at Dunedin, hibernating beneath cover along
ponds and marshes, and in Spanish moss, and in spring on low herbage in
moist localities.
In addition to the ten species of Haltica above mentioned
Leng, in his Catalogue, includes H. carinata Germ. and H. tor-
quata Lec. from Florida. His record for the first is probably
based on the H. exapta Say. of the Schwarz list, a synonym of H.
carinata, but Schwarz (Ms.) changes this to ignita Ill., which I
have included above as litigata Fall. Of H. torquata Lec.
I can find no Florida record, and as Horn makes it a synonym
of carinata, I have not included it, especially as Fall (Ms.) says:
"Almost surely does not occur in Florida."

XLVI. Lactica Erichson.

Small oblong-oval, shining species (3-4.5 mm.), pale yellow or
with elytra blue. Closely allied to Haltica but having the basal
impression of thorax limited each side by a longitudinal fold;
elytra nearly smooth. Habits unknown.
187 (15960). L. tibialis (Oliv.).-St. Augustine (Ham.). Miami (Sz.Ms.).
"North Carolina to Florida and Louisiana." Horn (1889).
188 (15961). L. iris (Oliv.).-The type of L. specularis Harold, a syno-
nym, was from "Florida."' No other State record.

XLVII. Diphaulaca Clark.

Very small oval glabrous convex species (2 mm.), differing
from Lactica in the elytra having rows of coarse punctures;
thorax reddish-yellow, elytra piceous-black.
189 (15964). D. bicolorata Horn.-Enterprise, Apr. 19 (C. & L.).
Gainesville, on red buckeye, Aesculus pavia L., Mch. (Wat.).

XLVIII. Crepidodera Chevrolat.
Small oval, convex glabrous species (2-2.5 mm.) having the
front coxal cavities closed behind; elytial punctures in rows;
ante-basal groove of thorax limited each side; antennae half the
length of body; color greenish-bronzed, brown or black.
*190 (15968). C. helxines (Linn.).-"Tampa, rare" (Sz.). Jacksonville

"Horn, Trans. Amer. Ent. Soc., VIII, 1880, 151.










THE FLORIDA ENTOMOLOGIST


(Sz. Ms.). At hand from Sanford and Pahoka, Mch.-Apr., one specimen
from each place. A very common species in Indiana but evidently scarce
in Florida. Occurs on willow, elm and other foliage.
*191 (15974). C, atriventris Melsh.-"Enterprise and Tampa, rare."
(Sz.). At hand from Okeechobee City and Dunedin, Feb. 6-Mch. 27. In
February beaten from Spanish moss; in March on ferns and other
herbage in dense hammocks or along their edges.

XLIX. Epitrix Foudras.

Very small, oval, convex black or brownish species (1.5-2 mm.),
close to Crepidodera but having the upper surface rather thickly
clothed with short, erect grayish hairs.
192 (15981). E. lobata Cr.-"New Smyrna", rare (Sz.). Indian River
(Sz. Ms.). No other State record.
*193 (15982). E. cucumeris Harr.-Moore Haven, mouth of Hillsboro
Canal and other points on L. Okeechobee, Mch. 20-24; swept from vege-
tation in gardens and said to do much damage to egg plant, cucumbers
and otler truck crops of that region (Bl. 1923). The only State record.
*194 (15983). E. brevis Sz., 1878, 367.- Types from Ft. Capron and
Enterprise. St. Augustine and L. Worth (Ham.). Frequent about Dun-
edin in March on ferns and other foliage in hammocks and low moist ground.
Gainesville on Eupatorium, Oct.; on Aesculus pavia, Mch. (Wat.).
*195 (15984). E. fasciata Blatch., 1918, 56.-Types from Dunedin. At
hand also from Caxambus, Key West and Cape Sable. A submaritime
species found in spring on low herbage along the margins of salt water
lagoons.
*196 (15986). E. parvula (Fabr.).-Throughout the State. Listed by
Schwarz as E. hirtipennis Melsh., a synonym. Frequent about Dunedin,
Mch.-Apr., on ground cherry and other low vegetation in moist grounds.
Known as the "tobacco flea-beetle" as it often riddles the leaves of that
plant, thereby preventing their use for cigar wrappers.

L. Orthaltica Crotch.

Small oblong, parallel glabrous species (2-2.5 mm.), brown or
piceous in hue, having the ante-basal thoracic groove not limited
each side, and antennae as long as or longer than body.
197 (15988). 0. copalina (Fabr.).-"Occurs from Massachusetts to
Florida, westward to Missouri and Iowa" (Horn, 1889). No definite State
record. Occurs in Indiana on sumac and Hercules' club, Aralia Spinosa L.

LI. Mantura Stephens.

Small oblong-oval, convex species (2 mm.), brownish-bronzed
in hue, the tips of elytra paler; thorax without transverse basal
impression, but with a short deep longitudinal one each side of
base; elytral punctures in rows.











AUTUMN NUMBER


*198 (15993). M. floridana Crotch, 1873, 73.-Types from "Florida,
Louisiana and Pennsylvania." At hand from Sanford and Dunedin, Mch.-
Apr. Occurs in March by hundreds on a species of dock, Rumex, growing
along the bay beach at 'Dunedin; also on other herbage in low moist grounds.

LII. Chaetocnema Stephens.
Very small, oval, convex black or brownish glabrous species
(1.8-3 mm.), having the thorax without basal impression, hind
tibiae sinuate and toothed above near apex; elytral punctures in
rows; first two ventral segments connate.
*199 (16000). C. brunnescens Horn, 1889, 259.-Types from Key West,
Punta Gorda and Miami (Sz. Ms.). A submaritime species, at hand from
Key West, Cape Sable and Dunedin. Frequent near Dunedin, Nov.-Feb.,
on the foliage of button-wood and other low shrubs growing near tidewater
lagoons.
200 (16001). C. denticulata (Ill.)-"Enterprise and Cedar Keys,
rare" (Sz.). St. Augustine (Ham.).
*201 (- ). C. floridana Blatch., 1923, 33.-Types from Dunedin and
Lakeland, Dec.-Mch.; taken by sweeping huckleberry and other low vege-
tation in open pine woods. This is the species I erroneously recorded
(1919, 66) as C. cribrifrons Lec.
*202 (16003). C. pinguis Lec., 1878, 417.-Types from Enterprise and
New Smyrna. At hand from Lakeland, Istokpoga and Dunedin, Dec.-Mch.
Occurs on low vegetation along the margins of lakes and beneath cover on
the bay beach.
*203 (16006). C. minute Melsh.-"Florida" (Horn, 1889). Gainesville
(Wat.), Scarce at Dunedin, Mch. 2-30, on herbage growing in low moist
ground.
*204 (16008). C. alutacea Cr., 1873, 74.-Types from "Florida." "Com-
mon on swampy meadows" (Sz.). St. Augustine (Ham.). Biscayne Bay
and Haw Creek (Sz. Ms.). Dunedin, rare, Apr. 8, by sweeping along the
margin of a dense hammock (Bl. 1923).
*205 (- ). C. robusta Blatch., 1923, 33.-Types from Hog Island,
opposite Dunedin, where it occurs in some numbers on Batis maritima and
other herbage growing in areas flooded at high tide. The largest (2.7-3 mm.)
of the Florida species of the genus.
*206 (16011). C. obesula Lee., 1878, 418.--Types from L. Ashley and
Baldwin. Enterprise (Sz. Ms.). At hand from Pahoka, Moore Haven and
Dunedin, Oct. 26-Mch. 27. In the truck lands about L. Okeechobee this
is one of the three species of flea beetles which are said to do much damage
to the crops, the others being Epitrix cucumeris and Chaetocnema quadri-
collis.
207 (16013). C. parcepunctata Cr.-"Common" (Sz.). The only State
record.
*208 (16014). C. pulicaria Melsh.-St. Augustine (Ham.), Gainesville,
on corn (Dqz.). Dunedin, scarce, Dec.-Mch., on low herbage along the mar-
gins of ponds.
(To be continued)










6he
FLORIDA ENTOMOLOGIST
Official Organ of The Florida Entomological Society, Gainesville,
Florida.

J. R. WATSON-........-- ..........-- ....................................-----------..... Editor
WILMON NEWELL.-................-..........---.--..........--- ..- Associate Editor
A. H. BEYER.-.....-.....--------.......... ........--.......-----Business Manager
Issued once every three months. Free to all members of the
Society.
Subscription price to non-members is $1.00 per year in ad-
vance; 35 cents per copy.


THE APHID SITUATION
The new citrus aphis has at last been identified. Dr. Baker
of the U. S. Bureau of Entomology states that it is Aphis spirea-
cola Patch., an insect whose known distribution covers most of
the United States. Miss Patch, who described the species, is now
of the opinion that it is identical with Aphis pomi, the Green
Apple Aphis. At the Station we have been able to readily trans-
fer the aphis from citrus to apple.
The origin of the outbreak still remains a mystery. Has the
insect only recently reached our citrus section, or has it recently
developed a strain with an appetite for citrus, or has it been here
on citrus in small numbers for many years to develop into a severe
pest during the last two years because of weather or other favor-
ing conditions? It is unfortunate that we cannot definitely
answer that question, for on the answer hinges the probable
future of the pest. If either of the first two guesses is the correct
one, we may expect a prolonged fight. If the last is the true one,
as Dr. Baker seems to think, we may look for a slump in its num-
bers perhaps as complete and sudden as its rise. Undoubtedly
the aphids are fewer now than at any time since March. But
the present ebb in numbers may be a seasonal rather than a per-
manent one. All aphids are always scarce at this season of the
year and there was a similar slump in the numbers of the new
aphis last summer. If the outbreak of last spring was caused by
favorable weather conditions one would expect that there would










AUTUMN NUMBER


have been a similar rise in numbers of other species of aphids.
'This was distinctly not the case. The melon aphis, for example,
was much less destructive than usual. Furthermore if this
new aphis has been with us for many years is seems strange
that the outbreak should have had a definite center of origin,
near Tampa, from which it spread out in all directions. One
would have expected the outbreak to have been simultaneous
over at least most of the citrus belt.



MOSQUITO SURVEY OF BAMBOO KEY, FLORIDA

By G. F. MOZNETTE
Entomologist, U. S. Department of Agriculture
Miami, Florida

During the month of January 1923, Dr. Joseph Y. Porter,
President of the Key West Chamber of Commerce, wrote to Dr.
L. O. Howard, Chief Bureau of Entomology, Washington, D. C.,
stating that he was going to send an inspector to Bamboo Key
to investigate the truth of the report that there are no mosqui-
toes there, and find out the reason for such absence if true. He
requested Dr. Howard to send the writer with this inspector.
To the best of the writer's knowledge, Dr. Porter's proposed
plan never materialized. However, at the request of Dr.
Howard, a visit was made to Bamboo Key in January and again
in October and the following is a brief report on the mosquito
conditions existing there.
In July 1923, Dr. Howard received another letter regarding
Bamboo Key from a Mr. S. C. Singleton of Miami, Florida. He
wrote as follows: "There is a small island called Bamboo Key,
about a half mile north of Key Vaca, and about midway of its
length, that .is immune from mosquitoes. I aim aware of the
fact that this will sound a bit like a crank stbry, but if you wish,
what I say can be supported by affidavits from others. I took
up a homestead on Ramrod Key; I am not talking hearsay. If
what I say is so, then few matters are better worth your atten-
tion.
Right now, when from here to Key West, the mosquitoes are
plain hell, and swarming in the cockpit and cabin of your boat,
you can anchor close to this island and they will leave your










THE FLORIDA ENTOMOLOGIST


boat and you can be out on the sand in your bathing suit, in
comfort.
Once when sheep were pastured there, the immunity disap-
peared. Some time after the sheep were taken away, the Key
became again immune. This is the reason why I think it is a
problem coming under the jurisdiction of the Bureau of Plant
Industry.
If it is a plant that can be propagated, then oil or gold de-
posits would not add as much to the wealth of this State as the
application of the knowledge of this fact. I am not able to
undertake, a proper investigation. I would be very glad to give
you every aid within my power. It is not a matter of especial
bleakness. Mangrove grows along this shore. Mosquitoes are
not in this mangrove. This condition has been known to exist
for at least twenty years. I trust you will investigate."

Topography of Bamboo Key, Florida

Bamboo Key is a small island, about three acres in area, sit-
uated among the lower Florida Keys, approximately a half mile
north of Key Vaca and about midway its length. No elevations
of consequence occur, the highest point being about a foot above
the water's edge. The south, east, and west shores are rocky,
consisting of coral. The north shore is not as rocky and a
little sand beach is to be found. For the most part the key is
of a shell and coral formation. Low depressions and swampy
places to afford breeding places for mosquitoes do not exist
about the key, except for a few small crab holes along the shore.
The writer was unable to find brackish or fresh water existing
on any portion of the key during either visit there and condi-
tions about the key were exceedingly dry.

Flora of Bamboo Key, Florida

For the most part the key is devoid of trees. The few trees
that do occur are close to the water's edge, and are situated
on the east and south shore, while the remainder of the key is
overgrown with low growing plants and shrubs of various kinds.
The trees are mainly the white mangrove or buttonwood
Laguncularia racemose (L.) Gaertn. and the red mangrove,
Rhizophorac mangle L. One or two Geiger trees, Sebestin
Sebestina L., occur and a single coconut stands on the southwest










AUTUMN NUMBER


portion of the key. The writer was told that Bamboo Key was
a bird roost at one time, and, if so, there apparently were more
trees on the key than exist now. From reports the key was
cleared and cultivated a number of years ago and parties re-
sided there. The dwelling, however, was apparently destroyed
by fire, parts of the foundation still remaining. The fact that
this key was at one time cleared and cultivated apparently
accounts for the lack of more trees, the mangrove occurring
along the shore springing up after the-key was abandoned.
During the second visit to Bamboo Key the writer had the
use of a boat generously furnished by Mr. Hugh Matheson who
owns Lignum Vitae Key and also a large portion of Upper Mathe-
combe Key where he operates a lime plantation. Capt. L.
Cochron, Mr. Matheson's superintendent on Upper Mathecombe
Key, took the writer to Bamboo Key. Capt. Cochron, who has
lived on the Florida Keys for a number of years, stated after the
survey of the key that he did not see a single plant growing
there that does not occur on Upper Mathecombe Key or on some
of the other keys. The writer made a careful collection of all
plants growing on the key which have been determined by Dr.
John Small of the New York Botanical Garden. :The determina-
tions are as follows: Aloe sp.; Gayoides crispum L.; Cyperus
brunneus SW.; Rondia aculeata L.; Spartina junciformis E. &
G.; Galactia spiciformis T. 4 G.; Dolichus minimus; Atriplex
cristata HBK; Heliotropium curassavicum L.; Suriana mari-
tima L.; Wild asparagus; Chamaesyce buxifolia Lam.; Rivina
humilis L.; Melanthera testator; Heliotropium parviflorum
L.; Salicornia ambigua M.; Laguncularia racemosa L.; Mon-
anthochloe littoralis E.; Waltheria americana L.; Distichlis
spictata; Dondia linearis M.; Lyolina clostus; Gyssipumn ler-
sutum and Rliloxerus vermicularis. From the data contained
in Dr. Small's volume on the Flora of the Florida Keys, it ap-
pears that all the plants collected are also growing on other
Florida Keys. The writer has also observed many of them
growing on Grassy Key, Long Key, Lignum Vitae Key, and
Upper Mathecombe Key.

Mosquito Conditions of Bamboo Key, Florida

Dr. Raymond Turck and the writer did not find any mosqui-
toes on Bamboo Key during the visit there in January 1923.
January is not the month to find mosquitoes there, in fact, any-









THE FLORIDA ENTOMOLOGIST


where in southern Florida. On the writer's second visit to the
key in company with Capt. L. Cochron, many specimens of
Aedes taeniorhynchds, the brackish water mosquito, were col-
lected. This was the only species of mosquito encountered on
the key. Mosquitoes were not present on the boat while ap-
proaching the key from the north, but the minute we reached
shore by means of a smaller boat carried with us, we were at-
tacked. The writer's first impression on landing was not in the
least encouraging; that, as reports had led him to believe, he
would possibly find a solution for combatting the brackish water
mosquito in Florida. He was not, however, greatly surprised
when he did find plenty of mosquitoes there. The writer sur-
veyed the entire key and stirred up mosquitoes wherever, he
went. In the mangrove the mosquitoes were quite plentiful,
and in walking through the grass and shrubs, mosquitoes
were encountered. These observations were made on October
5, the day being bright and quite warm. No doubt the mosqui-
toes would have been more numerous during the night. It is
the writer's belief that mosquitoes do not occur in as large num-
bers on Bamboo Key as on Key Vaca or Grassy Key as well as
some of the other keys in the vicinity. Bamboo Key is more or
less wind swept. The vegetation is not as dense nor as high and
hence does not afford nearly the harboring conditions for mos-
quitoes as the other keys which are covered with a much denser
growth of mangrove and high growing trees and shrubs. Again
mosquitoes were not found breeding on the key as they were on
the other neighboring keys. It appeared that the mosquitoes
occurring on the key migrated there from adjoining keys to the
south and southeast, the prevailing winds aiding their migra-
tion from those directions. Bamboo Key might have been free
from mosquitoes at one time but this is not true at present. It
may be possible, however, that Bamboo Key is comparatively
free from mosquitoes for very short periods during the summer
months when mosquitoes are plentiful on some of the other keys.
This would perhaps depend on the weather conditions at the
time, and whether the wind was in a direction very unfavorable
for their migration to the key.

PERSONALS
Dr. W. S. Blatchley has, at the invitation of the Florida State
Federation of Women's Clubs which owns the park, undertaken










AUTUMN NUMBER


a natural history survey of Royal Palm Park (Paradise Key),
south of Miami. Dr. Blatchley expects to devote a considerable
part of his time for at least five years to this survey.
Dr. Cole has been secured to assist Mr. Others in the U. S.
Bur. Ent. Laboratory at Orlando.
Mr. Homer Bratley, Assistant in Department of Biology in
the University, has been employed during the summer by the
Department of Entomology of the Experiiment Station. He
assisted with the experiments on nematode control. During the
remainder of the year he will serve as a half-time assistant in the
Department and will work on pecan insects.
Profs. Rogers and Hubbell of the Department of Zoology of
the University spent their summer vacations collecting in West
Florida, Michigan, and Eastern Tennessee.
Mr. F. F. Bibby has accepted a position with the Georgia
State Board of Entomology with Mr. Jeff Chaffin.
According to Science, Dr. Frank E. A. Thone, assistant pro-
fessor of Botany at the University last year, has been selected to
direct the "Daily Science News Bulletin" which Science Service
furnishes to newspapers.


THYSANOPTERA OF N. A.
Additions and a Correction
J. R. WATSON
The writer has recently received from Prof. Harry S. Smith
of California specimens of a thrips infesting lily bulbs in Los
Angeles Co., Cal. The insect proved to be Liothrips vaneeckei
Priesner, hitherto known only from Europe.
Another addition to the American species of Liothrips is L.
urichi Karny ("A New Liothrips from Trinidad," Ann. Mag.
Nat. Hist., 9. XII.)
The late Prof. R. C. Treherne in the Canadian Entomologist
records the following new species from B. C.: Thrips physa-
pus L.; Tcoeniothrips lemanis Treherne, T. vulgatissimus Hal.
var. meridionalis Pries., T. pallipennis Uzel, T. orionis Treherne,
and Frankliniella nubile Treherne.
An examination of a larger series of the author's Phloeothrips
drakei reveals that it is identical with Acanthothrips karnyi
Hood.











THE FLORIDA ENTOMOLOGIST


Dr. H. Priesner of Austria recently called the writer's atten-
tion to the fact that his Dictyothrips floridensis is an Echino-
thrips. Comparison with Morgan's E. americana shows that
they are apparently identical.



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