﻿SOLOMON ISLANDS TRIPTEROIDES — BELKIN 219 



2. Ventral hair of anal segment single, arising from saddle (fig. 36, a) ; pecten 



teeth conspicuously fringed ; middle segments of abdomen with 2 pairs of 

 well-developed dorsal stellate tufts ; maxillae with short terminal spines 



(fig. 36, b) coheni, new species 



Ventral hair of anal segment a multiple tuft arising from the membranous 

 part of segment (fig. 35, c, /) ; pecten teeth simple; middle segments of 

 abdomen with only 1 pair of poorly developed dorsal stellate tufts (fig. 35, 6, 

 e) ; maxillae with long terminal spines (fig. 35, a, d) 3 



3. Dorsal abdominal hairs on segments III to V consisting of a stellate tuft and a 



minute hair anteriorly (fig. 35, &) ; pecten teeth at least 6 in number on each 

 side (fig. 35, c) ; breeding in taro leaf -axils only (fig. 35, a). 



mathesoni, new species 



Dorsal abdominal hairs on segments III to V consisting of a stellate tuft and a 



single long spike arising from the same or a separate tubercle (fig. 35, e) ; 



pecten teeth at most 5 on each side (fig. 35, /) ; breeding in coconut shells, 



etc. (fig. 35, d) stonei, new species 



toroklnae, new species 



4. Eighth abdominal segment with a sclerotized plate from which comb scales 



arise (fig. 34, h) 5 



Eighth abdominal segment without a sclerotized plate; comb scales very 



numerous (fig. 36, c, d) lipovskyi, new species 



binotata, new species 



5. Both mesothoracic and metathoracic spines present ; some of dorsal head hairs 



branched ; antennal shaft hair arising beyond middle (fig. 36, e) . 



solomonis (Edwards) 

 Only metathoracic spine developed (fig. 34, e) ; dorsal head hair single; an- 

 tennal shaft hair arising in basal half (fig. 34, g, 7i) __fl.oridensis, new si)ecies 



TRIPTEROIDES (RACHISOURA) MATHESONI, new species 



FiQUEES 33, d ; 35, a-c ; 37, / 



Rachionotomyia {Rachisoura) filipes Paink and Edwabds, 1929, pp. 305, 316-312. 



T. (Rachisoura) filipes Edwards, 1932, p. 76. 



T. (R.) filipes Lee, 1944, p. 18. 



T. filipes Knight, Bohart, and Bohart, 1944, p. 22. 



T. (R.) filipes sensu Paine and Edwards, Lee, 1946, p. 246. 



Figures: Male: Lee, 1946, p. 245 (ninth tergite). Larvae: Paine and Edwards, 

 1929, p. 311 (maxilla, thorax, terminal segments of abdomen ; as T. filipes) • 

 Lee, 1944, p. 18 (terminal abdominal segments ; as T. fi-lipes) ; Lee, 1946, p. 254 

 (maxilla). 



Distinctive characters. — Adults: Unornamented, wing scales all 

 broad dorsally. Proboscis 1.2 of front femur. Palpi 0.21-0.23 of pro- 

 boscis, without bristles at apex in either sex. Two or more pairs of 

 prescutellar bristles present, one posterior pronotal. Ninth tergite of 

 male with wide, shallow emargination. Light scaling on posterior 

 pronotum usually restricted to lower third. 



Larvae : Maxilla with greatly developed terminal spines. No tho- 

 racic spines. Stellate tufts poorly developed. Middle abdominal 

 segments dorsally with small stellate tuft and minute hair anteriorly 

 on each side. Pecten teeth at least six on each side. Siphon very 



