﻿SOLOMON ISLANDS TRIPTEROIDES — BELKIN 259 



Female genitalia : Genital lobes about as long as the anal lobe, but 

 slightly wider at apex ; a little less than half as long as the paddles. 



Larva (fig. 36, c, d). — Head (fig. 36, c) : A little wider than long, 

 uniformly light brown. Antenna very short, smooth, curved, concave 

 on outer surface ; shaft hair short, inserted near apex on outer surface. 

 Dorsal head hairs all simple, smooth, slender; arranged as shown on 

 figure. Ventral head hairs better developed ; postmaxillary and basal 

 maxillary with several branches; submental multiple, arising near 

 posterior margin of submentum ; basal 2- or 3-branched ; subbasal and 

 infraorbital long, simple. Clypeal spines strong, curved inward near 

 base, swollen in the middle, slender at apex. Mouth parts normal. 

 Labral tuft large. 



Thorax : Numerous stellate tufts on dorsal, lateral, and ventral sur- 

 faces; tufts arising from distinct basal tubercles; 20 to 30 heavily 

 pigmented barbed spikes in each tuft, spikes emarginate at apex, end- 

 ing in two sharp points. Prothorax with six pairs of stellate tufts 

 dorsad of pleural hairs; hairs 1 to 3 arising from common tubercle, 

 hairs 1 and 3 stellate tufts, 2 simple ; hairs 4, 7, 8, and stellate tufts. 

 Mesothorax with two pairs of stellate tufts dorsad of pleural groups 

 (hairs 1 and 8) ; hair 7 thickened, forming a spine, usually simple, 

 barbed, occasionally bifid. Metathorax with a trifid spine arising from 

 a large tubercle (hair 7), the smallest spine about one-third of largest, 

 middle one-half to two-tliirds; four pairs of stellate tufts (hairs 

 1,3,5,8). 



Abdomen (fig. 36, d) : With numerous stellate tufts on segments 

 I to VII, each tuft with 20 to 30 heavily pigmented barbed spikes as 

 on thorax; dorsally each segment with two pairs of equally well de- 

 veloped tufts per segment. Segment VIII with a comb of about 25 

 spines on each side, usually ringing the segment ventrally; dorsal 

 spines short, somewhat curved, succeeding teeth longer, straighter, 

 set close together, becoming shorter toward ventral surface. Pentad 

 hair 1 a strong stellate tuft; hair 2 long, simple; 3 short, 3- to 6- 

 branched ; 4 long, simple ; 5 long, 3- to 5-branched. Siphon uniformly 

 pigmented a light brown except at base, which is black ; index about 

 4; ventral surface convex; dorsal surface convex at base, slightly 

 concave beyond the middle ; apex about two-fifths of base ; dorsal and 

 dorsolateral surfaces with 12 to 14 spines, mostly 2-branched, occa- 

 sionally simple or 3-branched; 9 to 13 ventral tufts, basal often 

 3-branched and paired, others usually double and in a single, somewhat 

 irregular row. Pecten of about seven simple spines on each side. 

 Anal segment with large incomplete dark saddle; posterior border of 

 saddle with about 10 long spines; saddle hair long, with three or four 

 branches; ventral tuft short, with 6 to 10 branches; ventral hair of 

 dorsal brush simple, dorsal tuft usually 5- or 6-branched. Anal gills 

 longer than segment, pointed. 



