44 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
and abdominal terga posses a few more setae than those of the larvae 
of A. orophila. The first abdominal tergum lacks the central dark 
mark, and the pores on the following segments are in front of the 
black mark rather than surrounded by it as in A. orophila. 
The data with the specimen is: ‘‘Pont Casse, .5 miles south, 22-24 
July 1963, O. S. Flint, Jr.”’ Because this is a small high altitude 
stream rather than a lowland stream, I hesitate to definitely attribute 
this larva to A. lobata, to which it may well belong. 
Alisotrichia dominicensis, new species 
Figures 110-114 
This species is easily recognized by the long ventral process 
and the middorsal sclerite of the tenth tergum and the bilobed claspers. 
Avutt.—Length of forewing 2 mm. Color fuscus; antennae yellow- 
ish, face and mesonotum with white hairs, forewing with a white 
band at midlength and basally. Spurs, 0, 3, 4. Basal antennal segment 
not modified. Ocelli 3. Maxillary palpus with 2 basal segments minute, 
third, fourth, and fifth segments elongate, subequal. Male genitalia: 
seventh sternum with an apicomesal process; eighth tergum broad, 
posterior margin of sternum slightly produced laterally, almost 
squarely truncate lateroventrally; ninth segment produced antero- 
laterally, with margins heavily sclerotized; claspers arising ventro- 
laterally from ninth segment, bilobed, semimembranous; tenth 
tergum with a mesal straplike sclerite upturned apically on dorsum, 
ventrally with an elongate mesal structure extending directly ventrad; 
aedeagus mostly membranous, with basal and apical cylindrical 
portions separated by a constriction, apical portion with indistinct, 
short, internal spines. Female genitalia: sixth sternum with a small 
apicomesal point; seventh sternum with posterior margin slightly 
bilobed, tergum with a pair of straplike sclerotizations ending in an 
oval mark; eighth and ninth segments with long lateral rods, eighth 
with a row of setae along posterior margin; bursa copulatrix an 
internal sphere. 
LARVA, PUPA, AND cASE.—Not known for certain, but see Aliso- 
trichia species 2. 
MareriaLt.—Holotype, male: Dominica, Pont Casse, 2.2 miles east, 7 May 
1964, O. S. Flint, Jr.. USNM Type 69896. Allotype, female: Pont Casse, 2.5 
miles east, 16 Jan. 1965, W. W. Wirth. Paratypes: same data as holotype, but 
3 May 1964, 19 ; same data as allotype, 2? ; Fond Figues, 25 Jan. 1965, W. W. 
Wirth, 27; Morne Nicholls, 9 Nov. 1964, P. J. Spangler, 19. 
Brotocy.—The adults were taken near either a small cascading 
mountain brook or a larger lowland river also with some cascades. 
