T\CHINIDAE OF ORIENTAL REGION 101 



Second antennal segment with an elongate wart-like excrescence on the basal half 

 of the inner-anterior surface (Text-fig. 139). Pteropleural seta extremely strong, 

 reaching back almost as far as the end of the lower calypter. Pleural regions of 

 thorax with pale yellow hair ......... 5 



Second antennal segment normal, without such excrescence. Pteropleural seta 

 weak, not reaching to beyond the end of the upper calypter (except in an un- 

 identified species near pentheri from Burma). Pleural regions of the thorax with 

 pale or dark hair ........... 7 



Abdominal T3 and T4 each with a pair of strong discal setae. Femora blackish or 

 brownish black. Parafacials very broad, about twice as wide as third antennal 

 segment, and finely haired on the upper parts ...... 6 



Abdominal T3 and T4 without discal setae. Femora reddish yellow (at most slightly 

 browned apically). Parafacials not wider than third antennal segment and 

 entirely bare ......... vulpinoides Baranov 



cJ with proclinate orbital setae. Scutum of $ with hair vestiture mainly black and 

 very short (inconspicuous). Abdomen predominantly blackish to naked eye but 

 with traces of reddish colour anterolaterally ..... comta Fallen 



<J without proclinate orbital setae. Scutum of $ with hair vestiture mostly pale 

 yellow or yellowish white and of moderate length (fairly conspicuous). Abdomen 

 predominantly reddish brown to naked eye ..... soror Zimin 



Femora black or blackish brown. Abdominal T3 often with a pair of erect discal 



setae .............. 8 



Femora reddish yellow or almost entirely so. Abdominal T3 without discal setae . 10 



Abdomen with ground colour tawny reddish yellow except for a broad black median 

 vitta and blackish apical half to T5. Pteropleural seta strong and reaching well 

 beyond the end of the upper calypter . Undetermined sp. (near pentheri Bischof) 



Abdomen with ground colour entirely black or brownish black. Pteropleural seta 



weak and not reaching beyond the end of the upper calypter .... 9 



Bend of vein M much nearer to m-cu than to the wing margin (m-cu to bend less than 

 twice as long as r-m). Abdominal T3 with a pair of extremely strong spiniform 

 discal setae. Abdomen appearing uniformly shining black to naked eye (pol- 

 linosity very thin and inconspicuous). Thoracic dorsum rather evenly pale 

 golden yellow pollinose (strongly contrasting in colour therefore with the black 

 abdomen). Tibiae reddish yellow and much paler than the dark femora Undescribed sp. 



Bend of vein M about equidistant between m-cu and the wing margin (m-cu to bend 

 at least twice as long as r-m). Abdominal T3 without or with rather weak discal 

 setae. Abdomen with silvery or pale yellowish grey pollinosity conspicuous to 

 naked eye, especially on basal halves of intermediate tergites. Thoracic dorsum 

 with inconspicuous silvery or pale yellowish grey pollinosity (not strikingly 

 contrasting in colour to naked eye with the abdomen). Tibiae reddish brown, 

 not noticeably paler than the femora .... atriventris Malloch 



Pleural regions of thorax with hairing all pale yellow or yellowish white. . . 11 



Pleural regions of thorax with hairing dark brown or black (except sometimes whitish 



on sternopleuron) . . . . . . . . . . .13 



Bend of vein M nearer to cross-vein m-cu than to the wing margin ; A/ 2 appendix in the 

 form of a good vein that is as long as or longer than the section of M between m-cu 

 and the bend .......... Jelis Mesnil 



Bend of vein M nearer to the wing margin than to m-cu ; M 2 appendix represented 

 by a short dark fold in the wing that is much shorter than the section of M 

 between m-cu and the bend ......... 12 



Palpi very small, shorter than the second antennal segment. Two stpl setae 



[character possibly not constant, only holotype known] . . . pellex Mesnil 



Palpi moderately long and fine, nearly twice as long as the second antennal segment. 



Three stpl setae .......... oralis Townsend 



