NO. 3665 CADDISFLIES—FLINT 28 
Aputt.—Length of forewing 5-5.5 mm. Color light brown, with 
whiter hairs middorsally, anterior margin of forewing dark brown. 
Male genitalia: ninth sternum moderately rounded basally; tenth 
tergites developed as long terete processes; cercus with a rounded 
dorsolateral lobe, posteroventrally developed into a sharp point; 
clasper divided into a thin, concave upper lobe bearing 4 short, broad, 
black setae, generally on elongate bases; basal lobe scooplike with a 
distal row of short dark setae; aedeagus with apicoventral portion 
developed into an elongate, narrow, hoodlike process. Female geni- 
talia: lateral lobes of eigth sternum broad; subgenital plate produced 
and rounded apically; bursa copulatrix with a complex of sclerites 
apically, and a donut-shaped mesal structure. 
Larva.—Length to 8 mm. Head and pronotum pale brown with 
conspicuous dark muscle scars. Labrum, maxillolabium, and legs as 
illustrated by Flint (1964a, fig. 4). Mandibles with dorsal row of teeth 
overhanging ventral row. Basal segment of anal proleg with a few 
short setae mesally; claw with 3 long and 1 short ventral teeth, apex 
curved at right angles. 
Pupa.—Unknown. 
MareriAu.—Holotype, male: Dominica, Pont Casse, 1.3 miles east, 29 Apr. 
1964, O. S. Flint, Jr. USNM Type 69887. Allotype, female: Syndicate Estate, 
5 March 1964, D. F. Bray. Paratypes: same as holotype, but 11 June 1964, 10; 
same, but 12 May 1964, 10°; Fond Figues, 13 March 1965, W. W. Wirth, 10; 
D’leau Gommier, 24 Feb. 1965, J. F. G. Clarke, 59. Other: Grenada, 2 miles 
west Grand Etang, 4-8 Aug. 1963, O. S. Flint, Jr., 1¢. St. Lucia, Cul de Sae 
River, at mile post 9, 29 July 1963, Flint and Cadet, 1; R. Galet, south of 
Dennery, 1 Aug. 1963, Flint and Cadet, 1.7, 8 larvae. 
Brotocy.—The adults generally have been collected near small 
clear streams. The larvae were taken on St. Lucia in a stream only a 
few feet wide by several inches deep. They were found under rocks 
near the head or tail ends of pools in the stream. 
Genus Polycentropus Curtis 
Polycentropus Curtis, 1835, pl. 544. [Type-species: Polycentropus irroratus 
Curtis, 1835, by original designation.] 
Polycentropus, as it is presently recognized by most North American 
workers, is found over most of the world; however, it seems to be 
best developed in the Northern Hemisphere. There is at least one 
species on all the Antillean islands. 
The larvae of the genus are well known and described. They build 
various types of silken trap nets. 
