﻿SOLOMON ISLANDS TRIPTEROIDES — BELKIN 243 



Male genitalia : Genital lobes about three-fifths of paddles, slightly 

 longer than wide; curved laterally; rounded at apex; anal lobe (seg- 

 ment IX) about five-sevenths of width and extending about two-thirds 

 length of genital lobes. 



Female genitalia: Genital lobes broadly rounded, extending less 

 than half length of paddles; anal lobe narrower, broadly triangular 

 but rounded at apex, extending to within one-fourteenth of apex 

 of genital lobes. 



Larva. — Head (fig. 36, e) : Slightly wider than long, uniformly pig- 

 mented a light brown. Antenna a little less than half as long as the 

 head, projecting well beyond the anterior margin of the head; almost 

 cylindrical on basal two-thirds, except for an external bulge near base, 

 apical third tapering; shaft hair arising on inner surface at point of 

 narrowing of antenna, hair stout and usually bifid near its middle, 

 almost a third as long as the antenna. Dorsal head hairs well de- 

 veloped but light in color: A usually double; B usually 3- or 4- 

 branched; C usually triple; d usually bifid near its middle; e and f 

 simple ; occular simple. Ventral head hairs well developed and prom- 

 inent : basal with one to three spikelike branches and a smaller stellate 

 tuft arising from same tubercle; postmandibular and postmaxillary 

 stellate tufts of four or five spikes, postmaxillary longer; basal maxil- 

 lary single or double spike ; submental branched, inconspicuous, arising 

 near occipital foramen; infraorbital simple, long, inconspicuous. 

 Clypeal spines rather slender; majority of specimens show a tuft of 

 many fine hairs at apex, in others the spines are longer and without a 

 tuft at apex. Maxilla longer than broad, with a large tuft of serrate 

 leaflets on apex, small teeth present on the internal margin. 



Thorax: Stellate tufts numerous and well developed, about 10- 

 branched ; individual spikes ending in two or more very short points, 

 shafts not conspicuously barbed. Prothorax with six pairs of stellate 

 tufts (hairs 1, 3, 4, 7, 8, 0) dorsad of the pleural group of hairs; on 

 each side of middorsal line two stellate tufts (hairs 1 and 3) arising 

 from a common tubercle. Mesothorax laterally with a stout trifid 

 spine (hair 8) arising from a very large plate, latter with a stellate 

 tuft (hair 7) and a simple hair (hair 6) ; a pair of stellate tufts dor- 

 sally (hair 1) . Metathorax laterally with an even stouter trifid spine 

 (hair 7) arising from a very large basal plate, latter with a simple 

 hair (hair 6) ; four pairs of stellate tufts (hairs, 1, 3, 5, 8) dorsad of 

 pleural group. Ventral stellate tufts present, well developed. 



Abdomen: Stellate tufts numerous and well developed, usually 

 about 10-branched, present on dorsal, lateral, and ventral surfaces ; two 

 pairs of tufts on dorsal surface of segments I to VII. Eighth segment 

 with lateral sclerotized plates, six to eight large simple comb teeth 

 arising from each plate, teeth strong, sharply pointed ; about four or 



