TACHINIDAE OF ORIENTAL REGION 97 



3 -f- 3 dc setae. Acrostichal setae well developed. Third antennal segment 

 normal. Scutellum with apical setae and with one pair of lateral setae. Vibrissal 

 angle without such vestiture, one pair of normal strongly developed vibrissae 



HYALURGUS Brauer & Bergenstamm 



Tribe PARERIGONINI 



This small tribe contains rather rare forms of uncertain affinity. For the present 

 it is retained in the Tachininae, but Mesnil (19706 : 121) is perhaps right in his 

 suggestion that the parerigonines are really aberrant Phasiinae; unfortunately the 

 hosts remain unknown and thus shed no light on the likely relationships. Townsend 

 (1936a : 1939a) placed the type-genus Parerigone Brauer in the Linnaemyini, 

 and Crosskey (19736) - whilst noting the uncertain affinities - placed the Pareri- 

 gonini near the Linnaemyini. The Australian genera Zita Curran and Pygidimyia 

 Crosskey (= Pygidia Malloch, preoccupied name) are undoubtedly parerigonines 

 and it is interesting to note, in relation to Mesnil's comments, that Townsend 

 (1936a : 1938) assigned these genera to the phasiine tribe Leucostomatini (a place- 

 ment that may prove to be rather perceptive). The genus Leverella from the 

 Papuan subregion and Queensland is also certainly a parerigonine, but like Zita 

 and Pygidimyia appears to be absent from the Oriental Region. 



So far only two genera are known to occur in the Oriental Region, Parerigone 

 and Paropesia Mesnil, both of which have been recorded only from northern Burma. 

 The former genus is found throughout southern Eurasia and Japan and the two 

 species in Burma can be recognized by the species key given after the generic key 

 below. Paropesia is so far known only from the female holotype of the type- 

 species, but to judge from the characters of this specimen (especially the terminalia) 

 from Burma is very closely related to the Papuan genus Leverella. 



The main characteristics of the Australian Parerigonini have been listed in an 

 earlier work (Crosskey, 19736), and in the main the two Oriental genera conform 

 to those characteristics: in the male of Parerigone, however, the abdominal tergites 

 6 and 7 + 8 do not form a deep declivity at the end of the abdomen as they do in 

 the males of Australian forms. The male of Paropesia is not known, but from the 

 apparent close relationship of the genus to Leverella it is probable that the Paropesia 

 male will have the extensively developed T6 and T7 + 8 like that of Leverella. 



The following key includes all the genera currently associated in the Parerigonini 

 (the names of genera not known in the Oriental Region being printed in non-bold 



type). 



Key to Genera of PARERIGONINI 



1 Four post dc setae. Three post ia setae, the middle one further from the transverse 



suture than from the hindmost one [Australia] . A USTRA LOTA CHINA Curran 



[Genus of doubtful position, possibly not belonging in the tribe.] 

 — Three post dc setae. Two post ia setae, both very strong and the anterior one at least 



a little closer to the transverse suture than to the posterior one .... 2 



2 Scutellum with a pair of strong lateral setae between the basal and subapical pairs of 



setae (normally therefore with four pairs of marginal setae). Eyes densely long 



