NO. 3665 CADDISFLIES—FLINT pare 
Avuur.—Length of forewing 4-5 mm. Color fuscus, leg bases 
slightly paler, forewing with a transverse band of iridescent white 
hair at level of anastamosis and another halfway to wing base, apical 
fringe white. Sixth and seventh segments of male with internal 
reticulate sacs. Male genitalia: ninth segment with anterior margin 
angulate at middle; tenth tergite elongate, rounded apically, with 
lateral margin heavily sclerotized; clasper widening uniformly to 
apex of basal segment, apical segment terete; aedeagus large and 
complex, apicoventrally heavily sclerotized and scooplike, a ventrally 
directed spine laterally at midlength, a short dorsal hood, a flat 
lateral plate in apical membrane that bears 2 rows of short spines 
and an apicodorsal angulate rod. Female genitalia: lobes of eighth 
sternum slightly longer than broad, evenly rounded apically; ninth 
segment without clasper groove or receptacle, with anterolateral 
angle greatly enlarged; internal plate with a quadrate central section 
bearing short apical arms and a pair of long basal arms; bursa copula- 
trix with a central ring and broad basolateral wing-like supports. 
Larva.—Length to 7 mm. Sclerites brownish. Each gill on basal 
abdominal segments with 3-4 filaments. Abdomen with many short, 
broad, black setae. 
Pupa.—Length 4-5 mm. Right mandible with 3 inner teeth, left 
with 4. Hook-plates anteriorly on segments 2-8, posteriorly on 3 and 
4; posterior plates about equidimensional, anterior plates with 2-3 
teeth, apex of posterior plates considerably elevated above body. 
Apical processes widely separated, with a brush of setae on apical 
third. 
MatTERIAL.—Holotype, male: Dominica, Pont Casse, 2.2 miles east, 2 May 
1964, O. S. Flint, Jr., USNM Type 69888. Allotype, female: same data. Paratypes: 
same data, 8o' 49; same, but 14 April 1964, 1c; same, but 1 May 1964,7¢ 
39; same, but 7 May 1964, 1c 5? ; same, but 11 May 1964, 16°; same, but 21 
May 1964, 19 ; Pont Casse, 1.3 miles east, 10 May 1964, O.S. Flint, Jr.,2719; 
same, but 12 May 1964, 6¢° 19; same, but 18 May 1964, 19 ; same, but 11 June 
1964, 19; Pont Casse, .4 miles east, 21 April 1964, O. S. Flint, Jr., 17; same, 
but 27 April 1964, 2¢°?; same, but 6 May 1964, 4o° 12; same, but 7 May 1964, 
1; same, but 15 June 1964, 1<; Pont Casse, .5 miles south, 22-24 July 1963, 
O.S. Flint, Jr., 2° 19 ; Sylvania, 9 Feb. 1964, D. F. Bray, 1; Trafalgar Falls, 
15 March 1964, D. F. Bray, 1¢° 19; Fond Figues, 23 Jan. 1965, W. W. Wirth, 
19; D’leau Gommier, 15 Feb. 1965, W. W. Wirth, 1c’. Other: Pont Casse, 
2.2 miles east, 3 May 1964, O. S. Flint, Jr., 8 larvae; Pont Casse, .4 miles east, 
20 May 1964, O.S. Flint, Jr., 2 larvae; same, but 12 June 1964, 8 larvae; same, 
but 25 June 1964, 3 larvae, 1 prepupa, 1 pupa; Pont Casse, .5 miles south, 22-24 
July 1963, O. 8. Flint, Jr., 36 larvae, 2 prepupae, 16 pupae, 29 metamorphotypes; 
same, but 15 June 1964, 6 larvae, 4 pupae, 1 ? metamorphotype; D’leau Gommier, 
27 April 1964, O. S. Flint, Jr., 5 larvae, 1 pupa; Springfield Estate, 20-26 July 
1963, O.S. Flint, Jr., 1 larva, 1 pupa; Roseau River, swift water, 16 June 1911, 
5 larvae; Espagnole River, cascades on Mt. Diablotin, east of Syndicate Estate, 
26 Jan. 1964, H. H. Hobbs, Jr., 1 larva; Boeri Lake, outlet, 10 Nov. 1964, P. J. 
Spangler, 4 larvae. 
