Official Organ of the Florida Entomological Society
Vol. XXXIII No. 4
WOLFENBARGER, D. O.-On the Distribution of Heilipus
squamosos (Lec.), a Pest of the Avocado .------_.------.. 139
JOHANNSEN, O. A.-A New Pterobosca from Florida with
a Key to American Species ..------------.......... --......-....-. 141
HERRING, JON L.-The Aquatic and Semiaquatic Hemiptera
of Northern Florida. Part 2: Veliidae and Mesoveliidae 145
HUSSEY, ROLAND F.-Leptocorixa filiformis in the United
States. (Hemiptera: Coreidae) ----.......~~...... ------------- 150
HUSSEY, ROLAND F., and HERRING, JON L.-Rediscovery of
a Belostomatid Named by Thomas Say. (Hemiptera) --- 154
NOTICES ............. -------.......----------------- 157
Published quarterly by the FLORIDA ENTOMOLOGICAL SOCIETY
Box 2425, University Station, University of Florida, Gainesville
Mailing Date: February 6, 1951
138 THE FLORIDA ENTOMOLOGIST
VOL. XXXIII DECEMBER, 1950 No. 4
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VOL. XXXIII-No. 4
ON THE DISTRIBUTION OF HEILIPUS SQUAMOSOS (Lec.)
A PEST OF THE AVOCADO
D. 0. WOLFENBARGER
University of Florida Sub-tropical Experiment Station
The curculionid Heilipus squamosus (Lec.), recently recog-
nized by Wolfenbarger (1948, 1949) as a pest of the avocado,
was described over 125 years ago. Through correspondence
with the Division of Insect Identification of the U. S. Bureau of
Entomology and Plant Quarantine, Dr. W. H. Anderson credits
J. E. LeConte (1824) with giving a description of the species
under the genus Pissodes. In a later publication Blatchley and
Leng (1916) cited H. squamosus as synonymous with H. apiatus
Olivier. This synonymity is accepted as an error since Dr.
Anderson reported that, "Olivier's species is quite different and
occurs in South America." The further statement by Blatchley
and Leng (loc. cit., p. 187) that H. squamosus, "Occurs also in
French Guiana." is, therefore, not accepted by me.
The distribution of Heilipus squamosus (Lec.) seems to be
generally summarized in a further quotation from Dr. Ander-
son that, "Judging from adults in the pinned collection the
species occurs in South Carolina, Georgia, Florida, Alabama,
Mississippi, and Tennessee." In general, this is the southeastern
part of the United States.
Plants from which the adult Heilipus squamosus has been
collected include, according to Dr. Anderson, sassafras, cotton,
camphor, and Satsuma. These are regarded as comparatively
unrelated species. Most of the specimens were collected from
sassafras, a member of the laurel family. Heilipus squamosus
larvae have been taken only from the avocado, according to Dr.
Anderson, and comprise those sent from the Sub-Tropical Ex-
periment Station. The avocado, incidentally, is also a member
of the laurel family, Lauraceae.
Heilipus squamosus has existed in Florida for many years
and is considered indigenous to the area of its distribution.
The introduction of the avocado into Florida, on the other hand,
apparently occurred about 150 years ago, according to Wolfe,
et al (1949). The avocado, a subtropical or cold susceptible
plant, is restricted to the warmer areas. Sassafras, on the other
hand, is either absent or grows sparsely where the avocado
grows. The host plants of the larvae, other than the avocado,
are unknown, although there must be one or more.
THE FLORIDA ENTOMOLOGIST
Figure 1. Heilipus squamosus collections from avocado trees. Counties
where beetles were taken are shaded. Elliptical line roughly approximates
northern boundary of more important avocado plantings.
Sometime after the introduction of avocado Heilipus squa-
mosus found it to be a satisfactory larval host plant. Within
the last two decades the abundance of the beetle has increased.
This increase seems to have been following a logarithmic curve.
There are those, however, who indicate that wind, water, dry-
ness, or other factors so weakened the trees that the beetle was
VOL. XXXIII-No. 4
able to develop in them. Extensive avocado plantings have un-
doubtedly resulted in the elimination of some host plants. With
or without some adaptation, a transition was made to the
Although Heilipus squamosus has hitherto lacked economic
importance its recent impact on commercial avocado production
makes it of importance to southern Florida, where avocado pro-
duction is successful. The areas of known distribution of
Heilipus squamosus are illustrated roughly in Figure 1. Some
meager examinations were made in other counties, Brevard for
example, without finding the species. It is likely that more
complete surveys will disclose State-wide distribution of the
Blatchley, W. S., and C. W. Leng. 1916. Rhynchophora or weevils of
Northeastern America. Nature Pub. Co., Indianapolis.
LeConte, Captain John. 1824. Description of some new species of North
American Insects. Ann. Lyceum of Nat. Hist., N. Y. 1:169-173.
Wolfe, H. S., L. R. Toy, and A. L. Stahl, Rev. G. D. Ruehle. 1949. Avocado
Production in Florida. Fla. Ext. Bull. 141: 1-124.
Wolfenbarger, D. 0. 1948. Heilipus squamosus Lee., a new enemy of the
avocado. Proc. Fla. State Hort. Soc. for 1948: 260-264, illus.
also in Calif. Avoc. Soc. Yrbk. for 1948: 98-102, illus.
A NEW PTEROBOSCA FROM FLORIDA WITH A KEY TO
O. A. JOHANNSEN
A few specimens of undescribed Ceratopogonidae (Heleidae),
ectoparasites on dragonflies, have been given to me by Dr. J. G.
Needham for study. One of these is from Florida, the first
record of a member of the genus Pterobosca from the United
States, facts that may be of interest to the readers of this
Journal. All recorded species of the genus, more than a dozen
in number, are parasites on dragonflies, attaching themselves
in most cases to the wings. Tokunaga (1940) records one
species (P. feminae) from Japan that attaches itself to the
thorax. The Florida species described below, was likewise found
on the thorax where it was firmly fixed. Pterobosca together with
Lasiahelea, Euforcipomyia, and Apelma, are regarded by some
THE FLORIDA ENTOMOLOGIST
entomologists as subgenera of Forcipomyia, all having in com-
mon large empodia nearly as long as the claws; the wing with
microtrichia and macrotrichia, the latter long, more or less
depressed, abundant, and covering the greater part of the wing
surface; the costa extending to about, or a little beyond, the
middle of the wing; and the anterior radial cells small, some-
times with one or both obliterated by the coalescence of the
adjacent veins. The chief differential characters of Pterobosca
are the six or seven long, terminal, antennal segments, the short
intermediate segments 3 to 8 (or 9); and the very large and
broad empodium fitted for clinging to the wings or the body
of dragonflies. The claws are either unusually large or entirely
lacking. The males are not known.
There are among the Lasiohelea some species that are ecto-
parasitic on insects, a few upon dragonflies. The line separat-
ing the two genera Pterobosca and Lasiohelea is not sharply
marked, since each group has a few species that possess some
character which is usually found only in the other, rendering
it impossible to formulate -concise definitions for these two
AMERICAN SPECIES OF THE GENIS Pterobosca
1. Feet without claws; third palpal segment with distinct sense
pit; a single spermatheca; fourth tarsal segment nearly as
long as the fifth. Honduras............--------P. incubans Macfie
- Feet with strong, cleft claws ._----------------(_ (2)
2. Length of antennal segments 10 to 15 combined more than
three times as great as 3 to 9 combined; wing 1.15 mm.
long by 0.5 mm. wide; wing surface bare alongside the veins.
Florida ......... ......---------------------P. floridana n. sp.
- The antennal ratio less than 2.6..........-- .-------------. (3)
3. Brazilian species. Wing bare alongside the veins; antennal
ratio nearly 2.6.-----......--......-..- ......-------P. macfiei Costa-Lima
- European species. Wing surface not distinctly bare along-
side the veins. Antennal ratio 2.4 ------._......P. paludis Macfie
The last mentioned species is included for comparison. Keys
to species of the eastern hemisphere are to be found in the
naners of Macfie (1936b), Oka (1948), and Tokunaga (1940).
VOL. XXXIII-No. 4
Pterobosca floridana n. sp.
Female. Blackish species, including the halteres; legs dark
brown. Eyes contiguous, bare; third palpal segment swollen,
with large, very dinstinct, centrally placed, sense pit; fifth
segment tapering, about a fourth longer than the one preced-
ing. Antennae with the last six segments elongate, the ratio
of the length of these segments combined to the length of seg-
ments 3 to 9 combined, is 3.1; the latter disc-like, i.e. trans-
verse; segments 1 and 2 globose, the first membranous above;
terminal segment including papilla, a third longer than the
preceding one. Mandibles each with ten teeth aside from the
terminal tooth. Length of wings 1.15 mm., width 0.5 mm.;
microtrichia moderately coarse; macrotrichia on the veins and
on the disc except alongside the veins and the bases of cells
R, M, and Cu., which are nearly or quite bare. The two an-
terior radial cells subequal in length, the first very narrow,
slit-like; the second about as wide as the diameter of the section
of the costa in front of it; the first radial vein ends about op-
posite the level of the fork of the cubitus. Tibia of the middle
leg is about 2.4 times-as long as the basitarsus, the latter is
2.4 times as long as the second segment; fourth tarsal segment
about 0.6 as long as the fifth exclusive of the claws. Claws
moderately slender, much curved, swollen at and beyond the
bend, deeply cleft; empodium large, reaching nearly to the tip
of the claws. Apical part of the abdomen broken off so no
spermatheca was seen.
This species resembles the European P. paludis Macfie as
well as the Brazilian P. macfiei Costa-Lima but differs in an-
tennal ratio as well as other characters as indicated in the key
The specimen was found attached to the thorax of a dragon-
fly (Pachydiplax longipennis) by Dr. J. G. Needham at Arch-
bold's, near Lake Placid, Florida, April 23, 1947. Type in the
Cornell University Collection.
In the University collection are three specimens which were
found on the wings of three species of dragonflies taken by
Dr. Needham at L. Tortuguero, Puerto Rico, February 10, 1935.
Owing to their defective condition it is inadvisable to name
them. They all resemble P. floridana in coloring but differ in
being smaller, with a wing length of 0.9 mm. Of the specimen
taken on the wing of Cannacria herbida, nothing now remains
but one wing and a hind leg. The wing resembles that of P.
THE FLORIDA ENTOMOLOGIST
floridana, the leg differs in having the claws, although cleft,
more slender apically. The other two specimens, one from the
wing of Erythrodiplax sp., the other from Lepthenis vesiculosus,
differ from P. floridana in having eyes with sparse, short
pile; in the tarsal ratios, and in a smaller antennal ratio. These
two specimens lack claws, which to judge by the broken appear-
ance of the empodia, seem to have been torn off when the speci-
mens were forceably removed from the wing of the dragonfly.
Some species of Pterobosca wholly lack claws, but the condition
of the feet here seem to show that claws had been present. If
these two specimens really are members of the genus Pterobosca
as the wing venation and the structure of the antennae indicate,
they are the first of the genus to be recorded as having pilose
eyes, a character found in some species of the allied genus
Costa-Lima, A da. Instit. Oswaldo Cruz, Memorias. 32(2):616. 1937.
Johannsen, O. A. Ann. Ent. Soc. Amer. 36:763-791. 1943.
Macfie, J. W. S. Tijdschr. v. Ent. 75:269-283. 1932.
Proc. R. Ent. Soc. London. 5:63. 1936a.
i. c. 5:227, 228. 1936b.
1. c. 6:111. 1937.
Oka, H. Mushi. 18:107-113. 1948.
Tokunaga, K. Tenthredo. 3:110. 1940.
SPhilippine Journ. Sci. 71:310. 1940.
VOL. XXXIII-No. 4
THE AQUATIC AND SEMIAQUATIC HEMIPTERA OF
PART 2: VELIIDAE AND MESOVELIIDAE
JON L. HERRING
Department of Biology, University of Florida
Genus MICROVELIA Westwood
Microvelia borealis Bueno
This species is distinguished from all the others by its size
(1.6 2.00 mm.) and the curved hind tibia in the male. In
addition the females are orbicular in shape.
M. borealis is the most abundant form in North Florida.
It has been taken from sinkholes, Nymphaea marshes, calcareous
streams, sand-bottomed creeks, roadside ditches and fluctuating
hammock region ponds.
I have adults of this form that were collected in February,
March, April, August, September, October, and December.
Nymphs were taken in March, August, September and October.
SPECIMENS EXAMINED:" Alachua Co.: Sinkhole, 3 miles southeast of
Gainesville on the Pearl Street Road, September 27, 1937, H. T. Townsend
2 S a, 3 nymphs; December 18, 1934, H. T. Townsend 1 9 ; October 7, 1934,
H. T. Townsend 5 $, 13 9 9, In; February 3, 1935, H. T. Townsend 1 ,
19 ; Biven's Arm of Payne's Prairie, March 2, 1946, W. Beck 1 9 ; Hog-
town Creek near the sink, March 27, 1947, 75 & a, 75 9 9 ; Santa Fe River
at Poe Springs, May 8, 1947, 5 $ 3,8 9 9 ; Woods Pond, west end of Payne's
Prairie, March 27, 1943, J. S. Rogers, 4 $ 8, 8 9 9, 3n; Willow Pond, loca-
tion and collector unknown, April 9, 1934, 1 9. Bradford Co.: Lake Hamp-
ton, February 6, 1949, 2 $, 29 9. Dixie Co.: Small pond underneath
Suwannee River Bridge, September 9, 1947, 29 9. Marion Co.: Rainbow
River, August 4, 1946, 3$ $, 29 9.
'Microvelia hinei Drake
This is the smallest of our North Florida forms. Its length
is 1.3 1.6 mm. The sexes are similar in shape and the hind
tibiae of the male are straight.
The habitat of this species is very much the same as for
borealis. It has not been collected from calcareous streams but
has been taken from mats of sphagnum moss in the quite-acid
swamp and bog streams.
I have adults that were collected in February, March and
September. I have seen no nymphs.
SPECIMENS EXAMINED: Alachua Co.: Pond "C", 3 miles southwest of
Gainesville, March 5, 1934, H. T. Townsend, 1 S, 1 9 ; Blues Creek Swamp,
THE FLORIDA ENTOMOLOGIST
6 miles northwest of Gainesville, September 11, 1947, 1 2 9 ; Biven's
Arm of Payne's Prairie, March 6, 1947, 1 1 9; sinkhole pond on west
end of Payne's Prairie, March 20, 1947, 1 29 9. Bradford Co.: Lake
Hampton, February 6, 1949, 69 9.
Microvelia albonotata Champion
M. albonotata differs from all others in this area by its bright
yellow and brown coloration, the row of spines on the posterior
femora of the male and the distinct pallid tubercle on the male
venter. Its length is 2.2 2.4 mm.
It has been taken only from a sand-bottomed lake in Alachua
County. No field notes are available for this collection.
SPECIMENS EXAMINED: Alachua Co.: Lake Santa Fe, December 4, 1947,
1 & ; December 2-16, 1948, E. D. McRae, Jr., 2 $& 2 9 In.
Microvelia buenoi Drake
I collected a single male of this species from a mat of
sphagnum moss along the shore of a swamp and bog stream.
This is a new record for Florida.
SPECIMEN EXAMINED: Alachua Co.: Blues Creek Swamp, 6 miles north-
west of Gainesville, September 11, 1947, 1 .
Microvelia alachuana Hussey and Herring
This form, described recently, is the largest of the North
Florida Microvelias. Its size is 2.5 3.2 mm. At present it is
.known only from the type locality, Little Hatchet Creek, in
The life history is unknown. One nymph was collected in
Genus RHAGOVELIA Mayr
Rhagovelia choreutes Hussey
This species has been taken only from swiftly flowing sand-
bottomed creeks and calcareous streams. Specimens were col-
lected easily in great numbers along the shore, in the shade of
overhanging .trees, or beneath bridges, since they tend to con-
gregate in compact schools. This form does not frighten easily
and on many occasions, I have remained at one spot and col-
lected an entire colony. They usually scatter upon the first
approach of the collector but will return to the same area time
after time. Normally, they avoid open water, but they are quite
at home there as well as in the swifter pools where they zig-zag
over the surface in circular fashion.
Gould (1931) states that Rhagovelias "are excellent divers
and can swim readily below the surface of the water"; however,
VOL. XXXIII-No. 4
this seems very unlikely. I have never observed water striders
swimming beneath the film, although they are capable of regain-
ing the surface if pushed beneath it. This is accomplished
Adults and nymphs have been collected in almost every month
of the year.
SPECIMENS EXAMINED: Alachua Co.: Hogtown Creek, west branch be-
low Michigan Avenue Bridge, February 19, 1934, J. S. Rogers et al 46 $ $,
15 9 2 ; Hogtown Creek, east branch, February 15, 1937, Collector unknown,
11 & 8, 69 2 ; Hogtown Creek, 200 yards south of Michigan Avenue, April
24, 1937, F. N. Young, 53 8, 69 9 ; February 3, 1948, 78 3, 159 ?, In;
Santa Fe River at Poe Springs, March 14, 1933, collector unknown, 5 S ,
3 29 ; May 14, 1934, H. T. Townsend, 4 & 11 2 9 ; March 24, 1937, collector
unknown, 2 $ $; April 17, 1943, J. S. Rogers, 75 S 5, 75 9, 150n; May
8, 1947, 15 $, 25 2 9, 50n; Little Hatchet Creek at Alachua Airbase,
May 13, 1947, G. K. Reid and H. G. Dowling, 4 S 3, 5 9 9n; May 15,
1947, 53 $ S, 55 9 2, 200n; sand-bottomed creek, 2 miles south of Devil's
Millhopper, November 8, 1937, S. H. Spurr, 3 S 3 9 9, 4n. Hernando Co.:
Salt Creek, 2 miles east of Bayport, November 1,. 1947, 19 3S 79 2, 2n;
January 29, 1948, 60 $ 389 2, 50n; March 20, 1948, 185 182 2,
36n; April 25, 1948, 122 3 105 9, 51n; May 22, 1948, 30 $ 162 2,
6n; June 19, 1948, 3$ S, 229 In; June 20, 1948, 33 S 23 9, 10n.
Marion Co.: Silver Springs, April 3, 1948, collector unknown, 2 5 S, 3 2Y ;
October 11, 1948, W. McLane, 1 Putnam Co.: Little Orange Creek,
January 18, 1948, 2 3, 19, 2n.
Genus VELIA Latreille
Velia watsoni Drake
This species prefers the emergent vegetation of the shore
line. They run out upon the surface film only when disturbed.
At Salt Creek, specimens of watsoni were taken from a raft of
leaf debris that had accumulated in a small cove along the shore.
The small rafts were lodged in clumps of Mariscus sp. in shallow
water. In a swamp and bog stream, this species was taken
from a partly submerged log covered with sphagnum.
Drake (1919) states that the eggs are deposited on floating
aquatic plants and floating sticks or wood just beneath the
surface of the water.
SPECIMENS EXAMINED: Alachua Co.: Blues Creek, 6 miles northwest
of Gainesville, April 10, 1947, 1 2. Hernando Co.: Salt Creek, 2 miles east
of Bayport, January 29, 1948, 2 $ S.
Velia brachialis Stal
I have taken V. brachialis from almost all North Florida
habitats in small numbers. It is most often collected from be-
neath cover of shore vegetation, in crevices of logs or upon
THE FLORIDA ENTOMOLOGIST
rocks or stumps along the edge of the water. They are usually
taken in small groups. In one instance, however, thirty-eight
specimens were collected from the underside of an old oak limb
protruding from the water on Payne's Prairie. They were ar-
ranged in rows side by side in the crevices of the bark just
above the water line. In only a few cases were any specimens
collected from the open surface film. Many specimens were
forced from their place of hiding by dousing the shore zone
I have adults that were collected in every month of the year
except September, and nymphs that were collected in April,
May and July.
SPECIMENS EXAMINED: Alachua Co.: Biven's Arm of Payne's Prairie,
April 8, 1946, W. Beck, 1 ; July 5, 1946, W. Beck, 2$ 3, 49 9, 4n; July
10, 1946, W. Beck, 2 9 9 ; October 22, 1946, W. Beck, 2 9 9 ; November 12,
1948, B. Cooper, 1 9 ; Hogtown Sink, March 1, 1947, D. Miller, 1 $; March
27, 1947, 1 9 ; River Styx, 6 miles southeast of Gainesville, January 31,
1948, 1 19 ; April 13, 1947, 2$ $&, 39 9 ; sinkhole pond, 3 miles south-
east of Gainesville on Pearl Street Road, May 25, 1934, H. T. Townsend,
3n; December 9, 1934, H. T. Townsend, 18, 1 ; December 18, 1934, H. T.
Townsend, 1 9; April 15, 1935, H. T. Townsend, 1 $, 1 9 ; Haile's Siding
Pond on Payne's Prairie, November 23, 1947, 1 ; Payne's Prairie, April
5, 1947, 28 & S, 10 9 9 ; Pond "C", 3 miles southwest of Gainesville, May
18, 1933, J. Kilby, 1 S, 6n; Santa Fe River at Poe Springs, May 8, 1947,
1 S ; Lake Lochloosa, February 1, 1937, collector unknown, 1 $. Hernando
Co.: Salt Creek, 2 miles east of Bayport, January 29, 1948, 1 9 ; May 22,
1948, 2$ $ ; June 19, 1948, 1 S, 1 9 ; June 20, 1948, 1 o, 1 9 ; Weekiwachee
River, % mile west of spring, November 2, 1947, 1 Levy Co.: Pond
in hammock, near Williston, March 22, 1947, J. Grant and K. Strawn, 1 9 ;
August 25, 1945, collector unknown 1 9. Marion Co.: Lake Bryant, April
16, 1938, S. H. Spurr, 1 S, In; Rainbow River, August 4, 1946, 1 .
Genus MESOVELIA Mulsant and Rey
Mesovelia mulsanti White
Jaczewski (1930, p. 7) considers mulsanti to be a variable
species distributed "over a vast area extending at least from
Southern Canada, in the North, to the Central Provinces of the
Argentine Republic in the South." On the basis of the shape
of the male gonapophyses, he designates four subspecies of this
form. These differences do not appear to me to be sufficient
to separate this variable species into races. He has designated
the North American form M. m. bisignata.
This species is abundant upon the weed-grown ponds, ditches,
Nymphaea marshes and small coves of calcareous streams and
VOL. XXXIII-No. 4
sand-bottomed creeks. This form is found almost everywhere
that there are small secluded areas overgrown with vegetation.
It appears to be most at home on algal mats and rafts of duck-
Hungerford (1917) and Hoffman (1932) have published
complete studies of M. mulsanti. As with the other forms, it
appears that no hibernation occurs anywhere in Florida, and
mating and oviposition occur almost throughout the year. Adults
have been collected in every month of the year except June,
and nymphs have been collected in January, March, April, May,
September, November and December.
SPECIMENS EXAMINED: Alachua Co.: Sinkhole pond, 3 miles southeast
of Gainesville on the Pearl Street Road, May 25, 1934, H. T. Townsend,
2 S, 39 9 ; November 10, 1934, H. T. Townsend, 3 $3, 79 9, In;
December 8, 1934, H. T. Townsend, 28 S S, 249 9, 4n; January 3, 1935,
H. T. Townsend 1 29 9 ; January 9, 1935, H. T. Townsend, 11 S, 7 ? 9,
In; March 9, 1935, H. T. Townsend, 3 9 9, 7n; April 15, 1935, H. T. Town-
send, 1 29 9 ; Hogtown Sink, March 13, 1947, 13 S 5 9; May 1,
1947, 14 & S, 25 9 9, 3n; Hogtown Creek near the sink, March 27, 1947,
19 S $, 129 9, 2n; Hogtown Creek, west branch 200 yards south of
Michigan Avenue, February 3, 1948, 1 $ ; Biven's Arm of Payne's Prairie,
April 5, 1937, collector unknown, 1 & ; February 12, 1946, W. Beck, 1 9 ;
April 27, 1946, W. Beck, "19 ; November 13, 1947, 1 9; Lake Wauberg,
December 3, 1932, J. S. Rogers, 1S, In; April 30, 1938, collector unknown,
39 9, In; Santa Fe River at Poe Springs, May 14, 1934, H. T. Townsend,
1 9, 5n; March 12, 1938, collector unknown, 3 3 S, 2 9 ; Santa Fe River,
200 yards east of Poe Springs, May 8, 1947, 25 ; Santa Fe River at
Worthington Springs, February 6, 1949, 2 $ 19; Lake Alice, March
17, 1937, S. W. Gaylord, 1 9 ; November 12, 1937, S. H. Spurr, 1 5 ; May 24,
1938, S. H. Spurr, 3 & z, 1 9 ; Pond "C", 3 miles southwest of Gainesville,
April 4, 1933, J. S. Rogers, 1 ; May 18, 1933, J. Kilby, 3 9 In; cypress-
gum swamp, 5 miles southeast of Gainesville, January 31, 1948, 1 ;
Payne's Prairie, September 16, 1947, 3 3S 19; Haile's Siding Pond on
Payne's Prairie, November 23, 1947, 1 $, 1 9; sinkhole in Palm Terrace,
Gainesville, January 5, 1938, 0. E. Frye, 2 9 9 ; sinkhole pond west end of
Payne's Prairie, March 20, 1947, 1 9 ; pond, 500 yards north of River
Styx, April 13, 1947, 1 S, 29 9 ; pond in San Felasco Hammock, October
5, 1948, 2 9 9; Twin Oaks Pond, August 8, 1946, H. G. and P. Dowling,
1 S. Dixie Co.: Small pond underneath Suwannee River bridge, Septem-
ber 9, 1947, 1 19. Hernando Co.: Salt Creek, 2 miles east of Bayport,
January 29, 1948, 19. Levy Co.: borrow pit, 6 miles east of Cedar Key,
December 31, 1947, 43 &, 4 9. Marion Co.: Rainbow River, August 4,
1946, 1 9; Silver Springs, May 7, 1934, R. R. Sheppard, 19.
Mesovelia amoena Uhler
This species has been taken from floating mats of duckweed
(Riccia fluitans) on the surface of sinkhole ponds and from the
algal mats of a Nymphaea marsh.
THE FLORIDA ENTOMOLOGIST
SPECIMENS EXAMINED: Alachua Co.: Pond "C", 3 miles southwest of
Gainesville, May 18, 1933, J. Kilby, 1 9 ; Payne's Prairie, September 16,
1947, 1 9 ; Hogtown Sink, March 13, 1947, 1 ; sinkhole pond on west
end of Payne's Prairie, March 20, 1947, 7 9 9.
Drake, C. J. 1919. A new species of Velia from Florida. Fla. Buggist
Gould, G. E. 1931. The Rhagovelia of the Western Hemisphere, with
notes on world distribution (Hemiptera, Veliidae). Kans. Univ. Sci.
Bul. 20: 5-61.
Hoffman, C. H. 1932. The biology of three North American species of
Mesovelia (Hemiptera-Mesoveliidae). Can. Ent. 64: 113-120, 126-134.
Hungerford, H. B. 1917. The life history' of Mesovelia mulsanti White.
Psyche 24 (3): 73-83.
Jaczewski, Tadeusz. 1930. Notes on the American species of the genus
Mesovelia Muls. Ann. Musei Zoologici Polonici. 9 (1): 1-11.
LEPTOCORIXA FILIFORMIS IN THE UNITED STATES
ROLAND F. HOSSEY, Lakeland, Florida
The long slender greenish bugs of the genus Leptocorixa are
very commonly encountered in Florida when sweeping grasses,
ferns and shrubbery, especially in thinly wooded areas; often
they come to lights. Until now, Leptocorixa tipuloides (DeGeer)
has been the only species of this tropicopolitan genus reported
from the United States. Its range extends from Florida and
Georgia west to Texas, and southward through the Antilles
and Central and South America to Bolivia and northern Argen-
tina. It has been recorded from numerous places in Florida
by Van Duzee (1909, p. 49), Barber (1914, p. 521), Torre-
Bueno (1921, p. 61) and Blatchley (1926, p. 260). However,
some of the specimens on which these records are based have
proved, upon re-examination, not to be tipuloides.
All of the Leptocorixa that I have taken in three years'
collecting in Polk County are L. filiformis (Fabr.), and I have
found this species confused with L. tipuloides in several col-
lections. During the past summer I was privileged to examine
the North American Leptocorixa in the Museum of Zoology of
the University of Michigan, the U. S. National Museum, and
the Entomology and the Biology Departments of the University
1Contribution from the Biology Department, Florida Southern College.
VOL. XXXIII-No. 4
of Florida. I wish here to express my thanks to Doctors T. H.
Hubbell, R. I. Sailer, A. N. Tissot and H. K. Wallace, respectively,
for these privileges.
Above: Last abdominal segment and genital segments of females, ventral
aspect, Below: Apex of genital segment of males, ventral aspect.
Tabulation of these materials shows that both species of
Leptocorixa occur extensively in Florida, perhaps throughout
the entire state. L. tipuloides is represented in these collections
from the southern tier of countries in Georgia to the tip of
peninsular Florida, but though it has been reported as fairly
common in Cuba by Barber and Bruner (1947, p. 86) it seems
to occur only sparingly in southern Florida. L. filiformis is
much the more common of the two species in the southern half
of the state, but ranges north at leastto Clay and Columbia
Counties. The U. S. National Museum has filiformis also from
Morgan City, Louisiana.
Leptocorixa filiformis was described from "Americae insulis."
Like tipuloides it ranges far into South America, and I have
THE FLORIDA ENTOMOLOGIST
numerous specimens before me from Paraguay. Possibly it is
extending its range northward at present. It does not occur in
collections made by Dr. Hubbell in northern and western Florida
between 1923 and 1946, but a half-dozen specimens were taken
in Alachua County in the spring of 1950 by students in the
Department of Biology of the University of Florida. The Depart-
ment of Entomology has a specimen, however, from Lake City
in Columbia County which Dr. Tissot tells me was collected
prior to 1905, and other specimens in this collection were taken
at light at Leesburg and at Lake Alfred in 1930.
Neither tipuloides nor filiformis is of economic importance.
In Cuba they both inhabit large grasses, according to Barber
and Bruner (1947). Several oriental species of Leptocorixa,
however, are serious pests on rice. This is predominantly an
old-world tropical genus, with only three species recorded from
the Americas, and it is more familiarly known as Leptocorisa
Latreille, 1829. Its name was originally published in the French
form Leptocorise by Latreille in 1825, and was first validly
latinized as Leptocorixa by Berthold in 1827. Therefore Lepto-
corixa Berthold has two years' priority over Leptocorisa Latreille,
as pointed out by Bergroth" (1913) and Blite (1937).
The two species treated here fall in different subgenera as
defined by Stal (1873, p. 87) and can easily be separated by
'the subgeneric characters he gave. Other differences have been
pointed out by Stal (1868, p. 66) and Barber (1923, p. 20;
1939, p. 324). These may be summarized as follows:
L. TIPULOIDES.-Male genital segment most obtusely sinuate
at the apex, its hind angles obtuse or subrounded next the sinus;
sixth ventral segment of female obtusely produced at the middle,
not cleft, the dorsal genital segments shorter (subgenus Steno-
coris); form more robust; second antennal segment distinctly
shorter than the third; femora reddish at the tips; basal cell
of membrane infuscated.
L. FILIFORMIS.-Male genital segment deeply sinuate, the hind
angles acutely prominent; sixth ventral segment of female sub-
truncate behind and with a short cleft on middle line, dorsal
genital segments longer (subgenus Leptocorixa) ; form more
slender; second antennal segment subequal to the third; femora
not or most obsoletely reddish toward the tips; basal cell of
membrane not infuscated though usually enclosed by fuscous
VOL. XXXIII-No. 4
I do not find any significant difference in length, both species
commonly measuring 15 to 16 mm. Both Sthl and Barber have
stated, however, that filiformis is smaller as well as more slen-
der than tipuloides. I have seen specimens from the following
North American localities: all are in Florida unless otherwise
LEPTOCORIXA TIPULOIDES (DEGEER).-Gainesville (Alachua
Co.), Miami (Dade Co.) [my coll.]. Gainesville; Orlando
(Orange Co.), Brooksville (Hernando Co.), Palm Beach (Palm
Beach Co.), Paradise Key 2 (Dade Co.); also Thomasville, Ga.,
Louisiana, Texas [U. S. N. M.]. Liberty, Leon, Madison, Baker,
Bradford, Alachua and Orange Counties; also Valdosta, Ga. [U.
Mich. Mus.]. Leon, Alachua, Marion and Manatee Counties
[U. Fla. Biol. Dept.].
LEPTOCORIXA FILIFORMIS (FABR.).-Various localities in Polk
County [my coll.]. Edgewater (Volusia Co.), Vero Beach (In-
dian River Co.), Hardee County, Naples (Collier Co.), Venice
(Sarasota Co.), Paradise Key (Dade Co.); also Morgan City,
Louisiana [U. S. N. M.]. Alachua and Putnam Counties [U.
Fla. Biol. Dept.]. Clay, Putnam, Hillsborough, Polk, High-
lands, St. Lucie, Broward, Dade, Monroe Counties [U. Mich.
Mus.]. Lake City (Columbia Co.), Leesburg (Lake Co.), Lake
Alfred (Polk Co.), Bradenton (Manatee Co.) [Dept. Ent., U.
Fla. Agr. Exp. Sta.].
Barber, H. G. 1914. Insects of Florida. II. Hemiptera. Bull. Amer.
Mus. Nat. Hist. 33(31): 495-535..
Barber, H. G. 1923. Report on certain families of Hemiptera-Heteroptera
collected by the Barbados-Antigua Expedition from the University of
Iowa in 1918. Univ. Iowa Stud. Nat. Hist. 10 (3): 17-29.
Barber, H. G. 1939. Insects of Porto Rico and the Virgin Islands. -
Hemiptera-Heteroptera (excepting the Miridae and Corixidae). N. Y.
Acad. Sci.: Sci. Surv. Pto. Rico Virg. Isl. 14(3): 263-441.
Barber, H. G., and S. C. Bruner. 1947. The Coreidae of Cuba and the Isle
of Pines with the description of a new species (Hemiptera-Heteroptera).
Mem. Soc. Cubana Hist. Nat. 19(1): 77-88.
Paradise Key is not shown on any recent maps that are at hand.
It is not an island, but rather is an inland hammock. Dr. Sailer writes
me that H. S. Barber used this place name for material collected in 1919
in what is now Royal Palm Park. Latitude and longitude coordinates,
given me by the Board on Geographic Names, place Paradise Key about
17 miles southwest of Homestead, or slightly southwest of Royal Palm Park.
THE FLORIDA ENTOMOLOGIST
Bergroth, E. 1913. Bibliographisches liber Hemipteren. Ent. Mitt. 2(1):
Blatchley, W. S. 1926. Heteroptera or True Bugs of eastern North
America. 1116 pp. Indianapolis.
Bl1te, H. C. 1937. On African species of Leptocorixa Berthold. Temmin-
ckia 2: 281-296.
Stil, C. 1868. Hemiptera Fabriciana. 1. Kongl. Svensk. Vet.-Akad.
Handle. 7(11): 1-148.
Stal, C. 1873. Enumeratio Hemipterorum. 3. Kongl. Svensk. Vet.-Akad.
Handl. 11(2): 1-163.
Torre-Bueno, J. R. de la. 1921. New records of Florida bugs. Bull.
Brooklyn Ent. Soc. 16(2): 61. [L. tipuloides recorded from St. Peters-
Van Duzee, E. P. 1909. Observations on some Hemiptera taken in Florida
in the spring of 1908. Bull. Buffalo So. Nat. Sci. 9(2): 150-230.
REDISCOVERY OF A BELOSTOMATID NAMED BY THOMAS
ROLAND F. HUSSEY 1 and JON L. HERRING 2
It seems reasonably certain to the writers that the species
we described recently as Abedus (Microabedus) cantralli is the
same as the form which was named Belostoma fluminea var.
immaculate by Say in 1832. Say's entire account of this "va-
riety" was contained in the following words: "Much smaller
[than B. fluminea] ; lateral margin of the thorax depressed and
slightly reflexed; feet immaculate. Length half an inch. Most
probably a distinct species, but I have seen but one specimen."
Although B. flumineum is a common and well-known form
throughout the northern states, the variety immaculate has re-
mained unknown and has not been reported in the literature
from 1832 until now.
Most specimens of A. cantralli are between 13 and 14 mm.
in length, but a male measuring 12.4 mm. and a female 12.7
mm. long are among our paratypes, both collected near Gaines-
ville by the junior author. The latter specimen agrees exactly
with the size given for immaculate in Say's description. No
other North American belostomatid species has been discovered
which is as small as this.3
1Florida Southern College, Lakeland.
2 University of Florida, Gainesville.
SThe smallest specimens we have seen measure 11.5 and 12.5 mm. re-
spectively. Both were taken by the senior author near Lakeland on Decem-
ber 29, 1950.
VOL. XXXIII-No. 4
Our specimens of cantralli commonly have quite evident an-
nulations on the front and middle tibiae, those on the middle
legs being less distinct than the ones on the front pair. But
we have paratypes from the Gainesville area whose middle
tibiae are quite unmarked and whose front tibiae have annuli
so obsolete that they are nearly invisible. Say's unique speci-
men may well have been of this variant with the legs unmarked
or practically so. The median pale vitta of the dorsum which
we described in cantralli is not mentioned by Say, but this mark-
ing is quite variable and indeed it is entirely absent in about
half of the specimens now at hand. It may be remarked that
since the description went to press, the senior author and Mr.
J. E. Burgess, Jr., have collected nearly forty additional speci-
mens of this species. These were found in a shallow pool, some
18 inches deep and largely grown up with pickerel weed (Ponte-
deria), in a clearing in a small cypress swamp about eleven
miles north of Lakeland.
Say's description of the, thoracic margins agrees with the
condition found in cantralli. The pronotal margins of Belostoma
testaceum (Leidy) are plainly carinate but not at all depressed
and then reflexed. This is the only North American belostoma-
tid known which approaches cantralli (or immaculatus) in size,
but we have seen no testaceum smaller than 16 mm. among some
60 specimens examined, nor have we seen any cantralli exceed-
ing 14.3 mm. in length.
Say gave no locality for his var. immaculate. However, it
is well known that he himself made collections in southeastern
Georgia and in northeastern Florida, principally along the St.
Johns River. One of the paratypes of cantralli is from Liberty
County, in southeastern Georgia; another paratype was taken
41/2 miles southeast of Bostwick, in Putnam County, Florida,
less than a mile from the St. Johns River. Although there is
no evidence that Say's unique specimen came from either of
these areas, no species resembling it has been discovered else-
We believe, therefore, that the synonymy of this species is:
Abedus (Microabedus) immaculatus (Say), new combination.
Belostoma fluminea var. immaculate Say, 1832, Descr. new spp. Heter.
Hemip., p. 38; reprinted by Fitch, 1857, Trans. N. Y. St. Agr. Soc.
17: 809, and by Leconte, 1859, Compl. Writ. Thomas Say, 1: 365.
Abedus (Microabedus) cantralli Hussey & Herring, 1950, Florida Ent.
33(2): 85. New synonymy.
THE FLORIDA ENTOMOLOGIST
By coincidence, the name immaculate was also used by Leidy
in 1847 for a variety of his Perthostoma aurantiacum (a syno-
nym of Belostoma flumineum Say), differing by being "pale
luteous, [with] no maculations." It is to be inferred from
Leidy's account that this form was found in Pennsylvania to-
gether with the typical aurantiacum. Obviously this is not the
same as Say's immaculate, although Van Duzee treated it as
such in his Catalogue (p. 467). This error on Van Duzee's
part contributed 'to the present writers' describing cantralli as
a new species, as Leidy's paper was at hand when the descrip-
tion was prepared while that of Say was not available at the
time. If immaculate Leidy is to be considered a valid variety,
its preoccupied name must be replaced. We believe, however,
that it is best regarded as a simple synonym of Belostoma
With the var. immaculate of Say identified at long last, only
one of the numerous Hemiptera described by him is still an
unknown quantity. This is the Capsus ocreatus from Georgia,
whose type was presented to Say by Mr. Oemler of Savannah.
This species was thought probably a Pyrrhocorid by Stal in
1870, and was tentatively made a synonym of Dysdercus andreae
(Linn.) by Blatchley in 1926, but its true status is still un-
Blatchley, W. S. 1926. Heteroptera or true bugs of eastern North Amer-
ica. Indianapolis: The Nature Publ. Co. 1116 pages.
Hussey, R. F., and J. L. Herring. 1950. A remarkable new Belostomatid
(Hemiptera) from Florida and Georgia. Florida Ent. 33(2): 85-89,
Leidy, J. 1847. History and anatomy of the Hemipterous genus Belo-
stoma. Jour. Acad. Nat. Sci. Philadelphia, n. s., 1(6): 57-67, P1. X.
Say, Thomas. 1832. Descriptions of new species of Heteropterous Hemip-
tera of North America. New Harmony, Indiana, dated Dec. 1831.
Reprinted by Fitch, 1857, Trans. N. Y. St. Agr. Soc. 17: 755-812, and
by Leconte, 1859, Compl. Writ. Thos. Say on Entom. North Amer. 1:
Stal, C. 1870. Enumeratio Hemipterorum, 1. Kongl. Svensk. Vet.-Akad.
Handl. 9(1): 1-232. (p. 124).
Van Duzee, E. P. 1917. Catalogue of the Hemiptera . of America north
of Mexico. Univ. Calif. Publs., Ent. 2: 1-902.
VOL. XXXIII-No. 4
FORMATION OF THE ENTOMOLOGICAL SOCIETY
Ottawa, December 1, 1950.-At the eigthy-seventh annual
meeting of the Entomological Society of Ontario, held at Guelph
on November 1-3, 1950, it was decided to form a national so-
ciety, to be called the Entomological Society of Canada, The
new society will serve as a link between the various regional
societies, namely, the Acadian Entomological Society, the Ento-
mological Society of Ontario, the Entomological Society of Mani-
toba, the Entomological Society of British Columbia, the pro-
posed entomological society of Quebec, and others that may be
established. The Canadian Entomologist will be published
jointly by the Ontario and the national societies, Dr. W. R.
Thompson continuing as Editor, with Dr. G. C. Ullyett as As-
W. A. Ross, Division of Entomology, Ottawa, was elected
President and Professor A. W. Baker, Ontario Agricultural
College, Guelph, Vice-President. R. H. Wigmore and A. B.
Baird, Division of Entomology, Ottawa, have been named Secre-
tary and Treasurer respectively. The Directors comprise the
presidents of the regional societies, namely, D. D. Pond, Fred-
ericton, N. B.; W. N. Keenan, Ottawa, Ont.; C. A. Smith,
Winnipeg, Man.; and Prof. G. J. Spencer, Vancouver, B. C.;
as well as Father O. Fournier, President, Montreal Branch of
the Entomological Society of Ontario; Dr. C. W. Farstad, Do-
minion Entomological Laboratory, Lethbridge, Alta.; and Dr.
A. S. West, Queen's University, Kingston, Ont.
The annual meeting of the national society will always be
held jointly with the annual meeting of one of the regional
societies. In 1951, the combined meetings will be held at Ottawa.
From time to time it is proposed to publish short notes about
the activities of the members of the Florida Entomological
Society. Items concerning promotions, travels, honors or awards,
publications, etc. are particularly pertinent. Please send all
such information to the editor.
THE FLORIDA ENTOMOLOGIST
Edward Carlton Johnson, of Pompano Beach, Fla., has been
appointed field representative of entomology for the Florida
Agricultural Supply Company, it was announced yesterday by
Mr. M. C. Van Horn, general manager of the company.
Johnson, a graduate of the University of Florida, class of
1950, where he received his B.S. degree in entomology, will
operate in the territory stretching from Homestead to Fort
Pierce area on the east coast and from Collier City to Sarasota
on the west coast.
A native of Live Oak, Fla., Johnson was born and reared
on a farm and prior to attending the university, was engaged
in agriculture at Pompano Beach. During the war he served
in the U. S. Navy and for some time after the war was attached
to silver bullion salvage operations in Tokyo Bay.
Johnson is a member of the American Association of Eco-
nomic Entomology and of Sigma Nu fraternity. His two broth-
ers, John William and Oscar K. Johnson are engaged in farming
and produce brokerage at Pompano Beach. A sister, Mrs. Mary
V. Blyth, lives in Jacksonville.
The Florida Agricultural Supply Company is a division of
the Wilson & Toomer Fertilizer Company, Jacksonville.
Dr. Lewis Berner has recently returned to the University of
Florida to resume his teaching duties after an absence of eight
months. While away from the University, Dr. Berner was on
a special mission to the Gold Coast of British West Africa
where he undertook a survey of the insects of medical import-
ance in the Volta River system.