﻿266 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



Female. — Very similar to the male except for sexual differences. 

 Proboscis 1.2 of abdomen, 1.3 of front femur. Silvery coloration on 

 abdominal tergite II more extensive on apical margin of segment. 



Pupa. — Unknown. 



Larva. — Indistinguishable from T. lipovshyi. 



Head : A little wider than long, uniformly tan in color. 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, lightly pigmented and inconspicuous. Ventral head 

 hairs better developed : postmaxillary and basalmaxillary with several 

 branches; the latter often stellate; submental multiple, arising near 

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

 infraorbital long, simple. Clypeal spines strong, curved internally 

 near base, swollen in the middle, slender at apex. Mouthparts normal, 

 maxilla with dense tuft of hairs on apex. 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 deeply emarginate at 

 apex, ending in two sharp points. Prothorax with six pairs of stellate 

 tufts dorsad of pleural hairs ; hairs 1 to 3 arising from common tuber- 

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

 Mesothorax with two pairs of stellate tufts (hairs 1 and 8) dorsad of 

 pleural groups ; hair 1 thickened, forming a simple barbed spine, occa- 

 sionally bifid. Metathorax with a strong, trifid, smooth spine arising 

 from a larger basal tubercle (hair 7), the smallest spine about one- 

 third of largest, middle one-half to two-thirds ; four pairs of stellate 

 tufts (hairs 1, 3, 5, 8) . 



Abdomen : With numerous stellate tufts on segments I to VII, each 

 tuft with 20 to 30 heavily pigmented barbed spikes as on thorax ; dor- 

 sally each segment with two pairs of equally well developed tufts per 

 segment. Segment VIII with a comb of about 25 spines on each side, 

 not quite ringing the segment ventrally ; dorsal teeth short, succeeding 

 teeth longer, straighter, set close together, becoming shorter ventrally. 

 Pentad hair 1 a strong stellate tuft ; 2 long, simple, occasionally double ; 

 3 short, 3- or 4-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, occasionally 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 saddle ; posterior 

 border of saddle with about 10 long spines; saddle hair long, with 



