﻿SOLOMON ISLANDS TRIPTEROIDES — BELKIN 253 



less than one-third of paddle. Hair 2 of segment II very long, stout, 

 pigmented, usually about twice as long as B, inserted at about apical 

 fourth, distad of hair A ; most conspicuous hair of this segment. 



Paddles rather short, without marginal fringe or apical liair ; midrib 

 poorly sclerotized and evanescent beyond middle ; roughly triangular, 

 apex at end of midrib rounded ; inner half of paddle about half as wide 

 as outer. 



Male genitalia : Genital lobes extending to about eight-elevenths of 

 paddles, slightly longer than wide; curved laterally, rounded at apex. 

 Anal lobe (segment IX) extending about one-half to two-thirds of 

 genital lobes ; broadly rounded and much narrower than genital lobes. 



Female genitalia: Genital lobes and anal lobe approximately the 

 same length and width, extending less than half length of the paddles. 



Larva (fig. 36, «, h). — Head (fig. 36, a) : Slightly wider than long, 

 lightly and uniformly pigmented. Antenna very short, somewhat 

 curved near the middle and slightly swollen, smooth ; shaft hair short, 

 simple, placed at two-thirds from base. Dorsal head hairs very slen- 

 der and practically invisible : A short, multiple, with secondary 

 branching; B longer, multiple, with secondary branching; C usually 

 with three branches ; d double or triple ; e and f usually triple. Ventral 

 head hairs well developed, conspicuous: postmaxillary longer than 

 antenna, simple or double; postmandibular and infraorbital long, 

 simple; others multiple. Clypeal spines long and slender. Maxilla 

 normal, not elongate; three teeth on apex on inner surface, the larger 

 tooth slightly less than half the length of the body of the maxilla; 

 inner surface of maxilla with a fringe of small spines; outer apical 

 angle with numerous long hairs. Labral tuft very large. 



Thorax: Without spines or thickened hairs. Prothorax with 

 poorly developed dorsal stellate tuft group : 3-branched tuft anteri- 

 orly, 2-branched posteriorly, a single spike in between. Mesothorax 

 with a 4-branched stellate tuft. Metathorax with 5- or 6-branchcd 

 stellate tuft. In addition a pair of 4- or 5-branched stellate tufts on 

 prothorax and metathorax dorsolaterally. 



Abdomen : First three abdominal segments with two pairs of dorsal 

 stellate tufts, posterior pair better developed ; segments IV to VII with 

 three pairs of stellate tufts, the anterior pair smaller. Other stellate 

 tufts laterally and ventrally. All the stellate tufts with slender, 

 minutely barbed branches. Dorsolateral hair of I and II 2- or 3- 

 branched, lateral hair simple; lateral hair of III and IV usually 

 double ; of V usually long, simple ; of VI and VII short and simple. 

 Eighth abdominal segment witli a comb of seven or eight scales arising 

 independently in a single row ; individual scales sharply pointed, not 

 toothed or fringed. Pentad hairs well developed : Hair 1 a large stel- 

 late tuft of about nine spikes, 2 long and simple ; 3 triple or multiple. 



