NO. 3665 CADDISFLIES—FLINT 29 
the basal segment of the clasper is longer, and the lateral spine of 
the aedeagus is hooked. 
Apuutt.—Length of forewing 4-4.5 mm. Color uniform grayish 
brown. Males with two pairs of ovoid internal sacs in abdominal 
segments 6 and 7. Male genitalia: ninth segment with pronounced 
dorsolateral angle; tenth tergite short, blunt, with anteapical dorsal 
bump; clasper with apical segment about half as long as basal segment; 
aedeagus with a strong ventral scoop, lateral spine hook-shaped, 
membranous portion with about 6 pairs of long spines. Female 
genitalia: lobes of eighth sternum slightly longer than broad, pro- 
duced apicomesally; ninth segment without clasper groove or recep- 
tacle, greatly produced anterolaterally; internal plate with central 
part narrowly quadrangular, with long posterior and anterior arms, 
anterior pair arising mesally; bursa copulatrix with a central heart- 
shaped plate with a central hole, lateral supports U-shaped. 
Larva AND pupa.—Unknown. 
MareriaL.—Holotype, male: Grenada, 2 miles west Lake Grand Etang, 
4-8 Aug. 1963, O. S. Flint, Jr.. USNM Type 69890. Allotype, female: same data. 
Brotocy.—The adults were taken beside a small tumbling mountain 
brook in which the larvae are probably to be found. 
Genus Leptonema Guerin 
Leptonema Guerin, 18438, p. 396. [Type-species: Leptonema pallidum Guerin, 
1848, by monotypy.] 
This is a genus of many species throughout the American tropics 
and Africa. Species are known from Cuba and Puerto Rico on the 
Greater Antilles. 
The larvae have been described previously (Flint, 1964b). 
Key to Species 
LARVAE 
Coxa of foreleg with anteroapical process short and with setae on anterior 
OTR, shee ey Seam ciate an aan eg ee nema are ee L. archboldi 
Coxa of foreleg with process longer but without setae. ..... L. albovirens 
ADULTS 
Males with a very long, basally directed process from apex of aedeagus; females 
with a shallow groove laterally on 9th segment. ..... L. archboldi 
Males with a short lateroventrally directed process from apex of aedeagus; 
females with a deep, complex lateral groove on 9th segment . . L. albovirens 
Leptonema archboldi, new species 
FIGURES 66-70 
This species is very distinct, not being closely related to any 
described species. It probably belongs to the stigmosum section of the 
