(Formerly The Florida Buggist)
Official Organ of the Florida Entomological Society
VOL. IV SUMMER NUMBER NO. 1
THE MOSQUITO-MALARIA PROBLEM IN FLORIDA*
C. F. HODGE,
Extension Professor of Biology, University of Florida.
My extension work during the year has taken me from Pensa-
cola to Miami and over a number of circuits in the northern and
central sections of the state. In all of my trips a study of this
problem has occupied a good share of my spare time; and I have
come unexpectedly to one conclusion which greatly simplifies the
solution of the mosquito problem. As an observer who accom-
panied me on one of my excursions expressed it: "We have been
thinking and looking at the big places and have entirely over-
looked the little places in which all of our mosquitoes really
breAd." A rain barrel, a green pool by the watering trough in
the barnyard, or a pile of tin cans may not amount to the prover-
Viial "drop in the bucket" compared to the nearby lake, marsh or
cypress swamp, and still all the mosquitoes that infest the farm
home, the village or town may be breeding in the former places.
Take a few typical cases. At Stuart I found at the rear of a
*Given before the June meeting of the Florida Entomological Society.
The Kny-Scheerer Corporation
Department of Natural Science
404-410 W. 27th Street, New York, N. Y.
Entomological Supplies of Every Description
We buy and sell rare insects. Illustrated catalogue on request.
We recommend the goods advertised in The Florida Ento-
mologist. Please mention Entomologist when you write our
THE FLORIDA ENTOMOLOGIST
restaurant in the heart of the town a battered sheet iron wash
tub, evidently used in its last stages as a garbage receptacle. It
was about half full of filthy water. There were scores of mosquito
egg-rafts on the surface and the water was alive with larvae and
pupae. Mosquitoes were numerous, and there were probably
many other similar breeding places, but enough mosquitoes were
breeding in that one tub to supply the town. None were found
breeding in any of the natural waters.
In Plant City, on the freight station platform, were seven
barrels of water, all supplied with eggs and alive with wrigglers
in all stages. They were pouring mosquitoes by the thousands
into the business center of the city. The septic tank on the out-
skirts of the city was also found breeding mosquitoes, literally,
I think, by the millions. This is a problem for the city engineer.
No breeding whatever was found in ditches or bay heads during
a number of examinations extending from March through the
first half of May.
Dade City furnishes an especially instructive example. Near
the A, C. L. depot are extensive water-lily ponds that look from
the distance utterly hopeless. Careful examination, however,
along their marshy borders, in the worst looking places, revealed
only top minnows everywhere and no mosquitoes breeding what--4..e
ever. Mosquitoes were breeding abundantly in tin cans and
rubbish of a large dump alongside of one of these ponds.
The worst night I had during the whole year was spent in a
room of a hotel in Haines City. There were inside screens sup-
posed to cover the lower half of the windows, but both lower
sashes were immovably stuck about half way up. This left two
cracks the width of each window thru which all mosquitoes at-
tracted to the windows could pour into the room. I spent the
entire night killing the pests and estimated the casualties roughly
at between four and five thousand. In the morning I determined
to find out where those mosquitoes were breeding. Diagonally
across the street from the hotel was the railroad station and on
the freight platform, as usual, were barrels of water, five in this
instance. One of these had oil on it. The other four were
covered with a solid scum of mosquito eggs and empty pupa cases,
and hundreds of mosquitoes could be seen in the act of emerging
from the water. The capacity of one of these barrels, I should
think, might be 200,000 mosquitoes every ten days. I was told,
as usual in such cases, that those barrels didn't amount to any-
thing compared with the numbers that were breeding in the lake.
Again careful examination of the most likely places along the
lake shores revealed only schools of minnows and other natural
enemies and no mosquito larvae. A boat drawn up to the shore
with some water in it showed one or two rafts of eggs and a
few young wrigglers. If left a few weeks it might become a
I might give many more illustrations that prove the same
point. Of course being a stranger and spending, usually, only
one day in a place, it was impossible to make a systematic ex-
amination of all the backyards, henyards and barnyards of a
town; but I have found in most towns the water barrels on the
freight platforms breeding enough mosquitoes to make life a
burden to the entire community.
Bringing the matter home to us here, mosquitoes, both
Anopheles and Culex, are now numerous on the University
campus. A recent survey, while not as yet complete, certainly
adds evidence to support the position above advanced. At the
meter box north of Buckman Hall, where the water mains come
in from West University Avenue, both Anopheles and Culex
larvae were found in considerable numbers. Many more of both
kinds are breeding in the stagnant water that has collected in the
""bottom of the swimming pool. Culex in great numbers were
found in the water pans in the poultry yard back of the kitchen.
A few Culex were found in a trash can at the barracks. Culex
by thousands were found in a barrel of fertilizer water back of
the Experiment Station barn and also in a barrel half full of
water near the mule stable. Considerable numbers were breed-
ing in the watering tubs at the dairy and especially, as most of
the faucets are dripping continually, in the pools that form on
the ground around them. The cement watering troughs and
wallowing basins in the hog yards close by contained numbers of
wrigglers. On the other hand the three sinks, the small stream
in the kitchen garden, and the effluent from the septic tank were
all examined and no mosquitoes discovered in them. My obser-
vations coincide, in the main, with those reported by Loftin in
recent numbers of THE FLORIDA BUGGIST, although he does record
finding a few mosquito larvae in "marshes", "ditches" and
"sphagnum swamps" where the moss and weeds form wet masses
too dense for top minnows to penetrate. And I do not wish to
be understood as meaning that mosquitoes do not commonly breed
in natural as distinguished from artificial waters. I have many
times found them breeding in numbers in the mountain bogs of
THE FLORIDA ENTOMOLOGIST
Oregon and the Rockies, in the prairie sloughs of Montana and
the Dakotas, in the river sloughs and marshes of Wisconsin, and
in the swamps of New England. It is thus with the greater
surprise that I have found the natural surface waters of Florida
so free from them. There is a valid biological reason for this
in the fact that Florida waters are so abundantly stocked with
natural enemies. Minnows swarm in sinks to all appearances
entirely separated from other surface waters. Dragon- and
damsel-flies, often called "mosquito hawks", are everywhere in
Florida and their aquatic larvae, all carnivorous and active,
voracious feeders, make short shrift of mosquito wrigglers in
any pools that may be inaccessible to minnows. Then there
are the water-bugs, water-scorpions, water-striders, water-boat-
men and the whole series of predaceous water-beetles policing
both surface and bottom of every pool, stream or lake margin.
If man would consistently do his part, I am convinced that
natural enemies would effectively do theirs in holding mosquitoes
in check in Florida.
How can the people do their part? One home may breed mos-
quitoes to cover an area at least two hundred yards in diameter.
How can we get every home, rich and poor, black and white, to do
its share for its own comfort and safety and for that of the whole
community? The solution of this problem means more to
Florida socially, educationally and financially than possibly that
of any other problem in the state. The statistics of our own State
Board of Health give a death rate from malaria for 1919 of 41.8
per 100,000 of population; while for other states in the registra-
tion area the rate was only 3.2 (for 1917). We try, at least, to
provide by law that every citizen shall learn to read and write.
Of the two, in Florida, I should prefer to live next door to a man
who could not read, if he knew how to prevent the breeding of
mosquitoes on his premises, to living alongside of a university
professor who didn't know and wouldn't learn enough to do this.
Adequate and universally required science lessons in every
grammar and high school in Florida offers the only practicable
solution for the problem I can find. In what other way can we
hope to reach every home?
Probably not one adult in ten has ever seen mosquito eggs, to
know them, or has clear ideas about the life history of the insects.
Every school child can be given this information in a single well
developed science lesson. These lessons are clearly outlined in
available books; but the pupils should collect and study the actual
specimens wherever possible. Every school child will then be
able to know whether or not mosquitoes are breeding anywhere
about the home.
The children should be provided with adequate equipment for
this work. How many school children have insect nets? (Insect
nets, inexpensive and easily made by the children themselves, for
collecting in both water and air, were demonstrated.) Here is
a weapon with which anyone can sweep up all the mosquitoes in
a room in a few minutes. I have saved many a night's sleep with
this simple device and have promised myself never to be without
one in my future journeys in Florida. With our insect damage
tax of over $1,500,000,000 annually every child ought to have and
use the insect net during some part of every year of his school
Loftin, in the articles referred to, has described mosquito traps
that may help in the solution of our problem. These traps are
black or dark boxes or crocks set in favorable places about
porches and are designed to take advantage of the instinct of
mosquitoes to hide in dark holes during daylight, and considerable
numbers might be trapped in this way. But we may be pardoned
for asking whether the providing and daily tending of these traps
might not entail more expense and labor than the entire work of
doing away with the breeding places. These traps, too, seem to
me to be lacking somewhat in definite attracting power. Are
there not always too many other dark places in the dense foliage
of trees, weed patches, vines and shrubbery-known to be the
natural hiding places of mosquitoes? And could we hope by
any arrangement of such traps to catch but comparatively few
of the entire number about the premises ?*
In making my experiments upon trapping stable flies I think
I have caught at least as many mosquitoes in a single night in a
single stable window trap as Loftin caught in all his traps in a
year. Of course they happened to be there to catch that night,
and no real comparison with the Loftin traps is intended. In
this case a cow just inside the window supplied adequate attrac-
tion. In regions where extensive natural breeding places cannot
be drained, filled or oiled, or stocked with fishes, such traps might
readily be designed to catch all the mosquitoes that were attract-
ed to house or stable windows, the occupants serving as "bait"
but in no danger of being bitten. The traps would not be ex-
*As we understand it, Loftin's. traps were intended only for use in closed rooms
and exposed porches where natural hiding places for mosquitoes are few or
THE FLORIDA ENTOMOLOGIST
pensive and would catch bushels as easily as dozens, if they were
there to catch. They would also be automatic and require no
attention except to empty when full. Related as they would be
to the one passion of a mosquito's life, the thirst for blood, if
we could protect our domestic animals and ourselves with such
traps during the hours when mosquitoes are active, we might
save not only quantities of blood but catch practically all the
breeding mosquitoes within flying distance. In general it is
probably true that a mosquito does not produce eggs until she has
drawn a meal of blood; so this method, if we could cover all the
local sources of blood supply, might yield practical extermination.
Quite possibly, too, differences in the mosquito attracting power
of different animals niight help in the good work. A cow, horse
or mule might be found to attract practically all of the mosquitoes
away from the wild birds, frogs ard toads of a region. Of
course these latter suggestions apply only to such places, if any
exist in Florida, where extensive natural breeding waters are
beyond present possibilities of control and should not be per-
mitted to confuse or obscure the main point of this discussion.
This is, that any community in northern .Florida and the central
part of the peninsula can completely rid itself of mosquitoes and
malaria, at practically no expense, just as soon as it can secure
the intelligent cooperation of every home in doing away with
the strictly artificial and domestic breeding places of the pests.
This does not apply to localities within flying distance for
migratory species of either the Atlantic or Gulf coasts.
Beginning at home, the University campus should be made and
kept absolutely free of mosquitoes. Then Gainesville might well
be made a shining example and be in a position to tell other cities
exactly how the work was accomplished.
The railroads are all bidding for tourists and settlers and if
the attention of officials were called to this matter, orders from
headquarters might quickly put a stop to mosquito breeding upon
This is, of course, but a brief summary of the results of my
first year's observations on the mosquito-malaria problem in
Florida. I am fully convinced, however, that any farm home or
community that acts on the above suggestions will be most agree-
ably surprised at the results. At any rate, will it not be good
common sense to be absolutely sure that all the little domestic
breeding places are attended to before undertaking expensive
draining or oiling operations of swamps and ponds?
(See "Note", p. 14.)
AN APPARENTLY NEW HAPLOTHRIPS FROM CUBA
J. R. WATSON
Haplothrips merrilli, n. sp.
Color: Brown, tarsi and antennal segments 3 and 4 yellowish brown.
Measurements: Total length 1.14 mm.; head, length 0.14 mm., breadth
0.114 mm.; prothorax, length 0.113 mm., breadth 0.20 mm.; mesothorax,
breadth 0.19 mm.; abdomen, breadth 0.21 mm.; tube, length 0.086 mm., width
at base 0.048 mm., at the apex 0.023 mm.
Antennae: Total length 0.245 mm.
Segment I 1 2 3 4 5 6 7 8
Length ..---... 25.0 33.0 38.0 37.5 35.4 32.5 32.0 21.4 microns
Breadth ..--.....--. 26.7 23.5 20.0 23.0 20.6 20.0 15.5 10.6 microns
Head longer than wide and longer than the prothorax; cheeks slightly
convex, sides almost parallel; vertex rounded; surface smooth. Postocular
bristles rather long but pale and inconspicuous, knobbed. A pair of smaller
bristles in the middle of the dorsum, one at the inner angle of each eye and
one behind each posterior ocellus. Eyes rather small, occupying about %
the margin of the head and .6 the breadth; dark red; not pilose; facets
small. Ocelli much larger than the facets of the eyes; red; bordered by
heavy, dark red crescents; situated far forward, the posterior pair opposite
the anterior 1/ of the eyes and close to their margins but not touching;
anterior far forward, facing forward. Mouth cone reaching .5 or more
across prosternum, labium well rounded. Antennae 8-segmented, 1.7 times
as long as the head. Segment 1 broad at the base, truncated; 2 constricted
near the base into a broad stalk, cut squarely off at the apex; 3 broadly
vase-shaped with a rather narrow stalk at the base; 4 oval, broad, short-
stalked; 5 and 6 barrel-shaped with a short broad stalk; 7 oblong with a
broad base; 8 conical. All provided with many short dark bristles. Sense
cones short, colorless and inconspicuous. Three and 4 yellowish brown,
the others concolorous with the head and body.
Prothorax a little shorter than the head, anterior margin slightly convex,
posterior more so; sides diverging markedly posteriorly; coxae large and
conspicuous. Surface free of sculpture. Long but colorless knobbed bristles
on each angle and on each coxa; two pair near the posterior border, a
smaller pair near the middle and a larger laterad, a small pair near
Pterothorax somewhat narrower than the prothorax (including coxae),
sides slightly converging posteriorly; a few faint anastomozing lines near
the anterior margin; 3 pairs of small bristles along the anterior margin
and at least 6 pair along the sides. Legs rather long and slender. Fore
femora considerably enlarged. Fore tarsi with a small curved tooth.
Wings short, membrane reaching about to the fifth abdominal segment;
fringing hairs very long, 5 interlocated ones.
Abdomen rather long and narrow, quite so in some specimens; a pair of
pale, rather large, knobbed bristles on the posterior angles of each tergite,
and three pairs of heavy, curved, dark, sharp-pointed spines on the outer
third of each dorsal surface of segments 2-5; the innermost of these, along
(Continued on page 12)
Official Organ of The Florida Entomological Society, Gainesville,
PROFESSOR J. R. WATSON--.............----- .........--.................Editor
DR. WILMON NEWELL...........---.........---.............Associate Editor
DR. E. W. BERGER--..---..............-........--.. .........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; 25 cents per copy.
For this number Dr. C. F. Hodge contributes an especially
valuable and timely article. There is little doubt but that the
mosquito problem is the most important the state, as a whole,
has to solve. And the most difficult part of the work is to dissi-
pate the popular notion that little or nothing can be done about
it; that mosquitoes are an inevitable part of Florida and there-
fore best ignored; that it is not good "boosting" to mention the
subject; that they fly long distances and mostly breed in swamps
and marshes whose drainage at this time is out of the question.
It seems to us that the best and quickest method of eliminating
mosquitoes from a town is to hire a man who knows their breed-
ing habits to see to it that no one allows mosquitoes to breed on
his premises. We once lived in a town of 10,000 which paid a
man to spend his entire time inspecting yards, alleys and vacant
lots. That was a clean town and a favorite of tourists and
health seekers. As Dr. Hodge remarked before the Society,
"Few men can be trusted to know what is in their own back
* and ology it must be with 'all other ologies what-
soever' ". Seventeen letters expressing preference for FLORIDA
ENTOMOLOGIST were received by the Secretary in response to the
Business Manager's remarks on the change of name of THE
BUGGIST (p. 60, vol. III) ; seven from inspectors in the Nursery
Inspection Department (two not members of the Society, two
with unpaid dues 2 and 3 years, two with unpaid dues 1920);
four from the Quarantine Department (two with unpaid dues
2 years); two from Citrus Canker Inspectors (both dues 2 years
unpaid); one grove manager (dues 2 years unpaid); one County
Demonstration Agent (dues paid) ; and two professional ento-
mologists (dues paid).
It is known that at least one of the movers of the resolution
of February 23, while on a trip in the state in June, advised on
the matter with one or more of his assistants in the Sand Hill
country. Seven responded (three addressing their letters in
care of their boss) ; the next largest number also responded in
perfect harmony; the two canker inspectors and an ex-canker
inspector addressed their letters in care of their boss and ex-boss.
One writer is "Looking down through the annals of ento-
mology"; another, quite poetical himself, accuses the editor of
bursting forth in poetry, but fails to observe that the editor was
responsible for neither the poetry on page 72 nor the remarks
on page 60. Another "would want a good english word".
Now that we are dignified, will the movers of the resolution of
February 23 see to it that the delinquent ones pay up their dues
and the non-members become members of the Society? 23.-
E. W. B.
Doctor Newell. It was with peculiar pleasure that we read
in Science for July 2, among the names of those upon whom the
Iowa State College, at the June commencement, conferred the
degree of Doctor of Science, that of our most distinguished and
widely known member, Wilmon Newell.
Mr. C. A. Bennett, in charge of the camphor thrips investiga-
tions at Satsuma, has resigned from the U. S. Bureau of Ento-
mology. He will engage in the garage business in Palatka.
County Agent Marcellus Javens of Lake County, has resigned.
Mr. R. N. Wilson, the first secretary of our society and until
recently county agent at Riverside, Cal., now holds a very re-
sponsible position as secretary of a legislative committee for
agriculture at Sacramento, Cal.
Mr. Thomas H. Jones of the Division of Truck Crop Insect
Investigations of the U. S. Bureau of Entomology, who was
located at Ft. Myers during the winter, has returned to Baton
Mr. H. S. Dozier, who has held an entomological fellowship at
Ohio State University during the past year, is now with the
Mississippi State Plant Board.
THE FLORIDA ENTOMOLOGIST
There has been recently organized in New Orleans the Louis-
iana Entomological Society. This is the second entomological
society in the South, ours being the first. Among the list of
charter members we note the names of two of ours, Thos. H.
Jones and 0. K. Courtney.
A. C. Mason is now stationed at Orlando, Fla.
Virgil Clark has resigned from State Plant Board and now has
charge of Narcoossee Branch of Buckeye Nurseries.
J. C. Goodwin, Chief Clerk State Plant Board, has resigned,
effective August 15th. He will take post graduate work at
Ames, Iowa, next year.
County Agent K. E. Bragdon has organized a "Bee Club" in
Volusia County. The club is giving a picnic on July 16th and
has invited Frank Stirling and Chas. Reese to give a talk on
SOME RECENT PUBLICATIONS OF INTEREST TO
As senior author of Bulletin 833, U. S. Department of Agiicul-
ture on the Chrysanthemum Midge-Diarthronomia hypogaea
(F. Low.) Dip.-we find the name of one of our members, Mr.
C. A. Weigel.
The Canadian Entomologist for March contains a paper by W.
S. Blatchley on "Notes on Winter Coleoptera of West and South
Florida With Descriptions of New Species". On page 72 he
mentions Polypleurus geminatus with the statement, "It has not
been recorded from Florida". The beetle is included in Dozier's
List of the Coleoptera of the Gainesville region.
Among recent Farmers' Bulletins, U. S. Bureau of Entomology,
are the following: No. 1097, by F. C. Bishopp, on the Stable Fly.
The author illustrates and describes in considerable detail Dr.
Hodge's fly trap. No. 1037, by T. E. Snyderison, "White Ants",
termites, or as they are commonly called in Florida, "wood lice".
No. 1094, by V. L. Wildermuth, treats of "The Alfalfa Cater-
pillar" (Eurymus euretheme). Although we have little alfalfa
in Florida, the butterfly is common. It breeds on various other
legumes. No. 1061, by F. H. Chittenden, also treats of a com-
mon Florida insect, the Harlequin Cabbage Bug. The map on
page 6 "showing the distribution" is very incomplete for Florida.
It shows but two localities, whereas the insect is common the
REPORTS OF MEETINGS
The regular March meeting was postponed until April 5. 0.
W. Boggs of St. Augustine, was elected to membership. The
subject of the evening was "A Round Table Discussion of the
Latest Ecological Map of North America and Especially Florida",
led by Prof. Watson.
Under Timely Notes Prof. Watson called attention to a species
of thrips (Heterothrips aesculi Watson-H. azaleae Hood), which
has been found only in the blossoms of the Swamp Honeysuckle
(Azalea nudiflora) and the Southern Buckeye (Aesculus pavia).
Prof. Watson called attention to the fact that, altho these two
plants were not related, the shape of the two blossoms was very
similar-long, narrow, dry tubes. He stated that this illustrated
what seemed to be a general law governing the distribution of
thrips. The physical characteristics of the various habitats of a
species are always similar although the different hosts are often
not at all related. He also called attention to the fact that a
hedge of transplanted azalea on the station grounds had not yet
become infested although it had been there several years, less
than a quarter of a mile from infested buckeyes, showing that
this species, like thrips in general, are slow travellers.
FRANK STIRLING, Temp. Sec.
April 26. Due to the amendment of Article III of the consti-
tution separating the offices of secretary and treasurer, Dr. E.
W. Berger was elected treasurer.
The Secretary read a communication received from Mr. John
J. Davis, chairman of the National Museum Committee, Ameri-
can Association of Economic Entomologists, urging our Society
to call to the attention of the Florida Congressional delegation
the urgent needs of the National Museum. The President was
instructed to name a committee of three to prepare representa-
tions. J. H. MONTGOMERY, Secretary.
At the June meeting Dr. Hodge presented a report of his in-
THE FLORIDA ENTOMOLOGIST
vestigations of the breeding places of mosquitoes in Florida.
(An abstract of this paper is printed in this number.)
The Secretary read a number of letters in regard to the change
of name of the official organ of the Society. The majority of
the writers were in favor of the name "FLORIDA ENTOMOLOGIST".
A resolution was passed directing the Secretary to call the
attention of the State Board of Health to the breeding of mos-
quitoes on the property of the railroads and especially in the
water barrels on the freight platforms.
Under Timely Notes Prof. Watson called attention to the
apparent absence of the camphor thrips from the lower East
New members elected were: Max Kisliuk, Jr., Scientific Assis-
tant, U. S. Marine Hospital, Wilmington, N. C.; J. G. Grossen-
bacher and R. E. Lenfest, both of Apopka, Fla.; Wm. E. Stone
and Wm. H. Merrill, Agents Bureau of Entomology, U. S. D. A.,
AN APPARENTLY NEW HAPLOTHRIPS FROM CUBA
(Continued from page 7)
the posterior border, is especially large and curved sharply inward. Its
length is fully 1s the width of the abdomen. Terminal bristles longer than
Male similar but smaller. The fore femora slightly enlarged.
Measurements: Total length 0.86 mm.; head, length 0.13 mm., breadth
0.10 mm.; prothorax, length 0.085 mm., breadth 0.165 mm.; mesothorax,
breadth 0.17 mm.; abdomen, 0.16 mm.; tube, length 0.073, width at base
0.04, at apex 0.02 mm.; antenna, total length 0.28 mm.
Segment 1 2 3 4 I 5 6 7 8
Length ......................... 18.7 29.5 34.6 37.0 35.4 32.0 30.8 21.6
Breadth ........................ 22.15 22.7 19.2 20.0 19.1 17.2 14.2 9.6
Described from four females and three males collected by Mr. G. B.
Merrill from under the cap scales of several cocoanuts taken at quarantine
at Key West during March and April, 1920. Type in the author's collec-
tion. Paratypes in the National Museum and in that of the University of
This species is close to H. gowdeyi (Franklin), but differs in many
characters, including the shape of the head, absence of striations, color of
antennae and abdomen.
NEW THYSANOPTERA FROM FLORIDA-VII
J. R. WATSON
29. Haplothrips orlando Wats. & Osborn.
The original type of this insect (Florida Buggist, Vol. II, No. 4, p. 116)
is a male. We now have two females and three additional males. These
were collected by beating mostly "oak-runners" (Quercus pumuli) in the
"flat woods" east of Gainesville, August 9. This is evidently a flat woods
insect, as the ecological situation at the type locality near Orlando was
Female. Measurements: Total length 1.8 mm.; head, length .21 mm,
width .19 mm.; prothorax, length .18, breadth .32 mm.; abdomen, width
.44 mm.; tube, length .145, width at base .055, at apex .04 mm.; antennae,
segment 1, 40; 2, 53; 3, 67; 4, 62; 5, 53; 6, 50; 7, 49; 8, 48 microns; total,
.40 mm. Color identical with that of the male; considerably smaller. Fore
femora are but slightly enlarged. Tarsal tooth much smaller, in one ?
entirely absent. A brown area at the extreme base of the wings. The
number of interlocated hairs varies from 15 to 25, usually about 20. Type
in the author's collection.
Male. The new males are considerably larger than the type, averaging
2.25 mm. in length. In some of them the tarsal tooth is scarcely half as
large as in the type, and no larger than that of one female.
45. Haplothrips statices (Haliday).
Gainesville, Fla., July 10, sweeping in short grass along stream. In some
of these specimens, as also in some the writer has from Massachusetts and
Oregon, post-ocular bristles are present. In the original description and
in Moulton's key they are said to be absent.
A CASE OF SERIOUS SICKNESS DUE TO THE
PUSS MOTH CATERPILLAR
The editor recently received from Dr. H. D. Venters of the
State Board of Health a caterpillar of the puss moth with the
statement that "a boy almost died" from the effects of contact
with the larva "which poisoned him similar to the bite of a
Different individuals react very differently to the poison of
various insects. The editor has frequently been "stung" by these
larvae which are not uncommon in citrus groves. On him the
effects were little more serious than those resulting from contact
with a nettle or our common pretty "Horse Nettle" (Solanum
sp.). Can it be that different specimens of the insect also vary
THE FLORIDA ENTOMOLOGIST
immensely in the quantity or quality of their poison? We did
not feel sufficiently positive on this point to care to handle that
Note-A recent visit to the Dudley place, a large stock farm
thirteen miles west of Gainesville, offered the most conclusive
proof of my main point as to the ease with which mosquitoes
may be controlled. Here we have ideal natural breeding pools
all about and scores of farm animals to supply blood and still for
three nights I slept between two large windows, wide open, shad-
ed by shrubbery and without screens or netting of any kind with-
out once hearing the song of a mosquito. Keeping the rain water
barrels and the cistern stocked with minnows, one or two in
each barrel and five or six in the cistern, and strict attention to
all watering troughs had completely solved the problem.-C.
WANTED-To buy or exchange for northern species, southern
Chrysopidae (Lace-winged-flies). All stages desired, especially
material for biological studies. Will determine specimens. Dr.
Roger C. Smith, U. S. Ent. Lab., Charlottesville, Va.
"TESTED SEEDS FOR FLORIDA"
FARM AND GARDEN
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