9 8 R. W. CROSSKEY 



haired. Abdomen with long discal setae on the intermediate tergites and with 

 marginal setae on Ti +2 and T3 . . . . . PARERIGONE Brauer 



- Scutellum without lateral setae, always with only three pairs of marginal setae 



altogether. Eyes bare or haired. Abdomen without discal setae on intermediate 

 tergites or with rather short discals, normally without marginal setae on one or 

 both of the first two visible segments ........ 3 



3 Abdomen with Ti + 2 and T3 fused into a single large composite tergite. Posterior 



thoracic spiracle very large, at least twice as long as the barette. Legs reddish 

 yellow with darkened apices to the tarsi. Pleural regions of thorax with yellow 

 to golden orange hair. [Australia] ..... PYGIDIMYIA Crosskey 



- Abdomen normal, Ti + 2 and T3 not fused. Posterior thoracic spiracle normal or 



if a little enlarged then not nearly twice as long as the barette. Legs black or 

 brownish black. Pleural regions of thorax with dark hair (except sometimes for 

 some pale hair on propleuron) ......... 4 



4 Eyes densely and conspicuously hairy. Propleuron haired. [New Guinea, Queens- 



land, Solomon Islands] ....... LEVERELLA Baranov 



- Eyes bare. Propleuron bare or haired ........ 5 



5 Head bright yellow pollinose. Epistome strongly projecting and vibrissae inserted 



well above the epistomal margin (by a distance subequal to length of second 

 antennal segment). Both thoracic spiracles brown or blackish, not conspicuous 

 against the dark background of the pleural regions. Propleuron usually haired. 

 [Australia] ........... ZITA Curran 



- Head dull greyish white pollinose. Epistome only very slightly projecting (just 



visible in profile) and the vibrissae inserted only slightly above the level of the 

 epistomal margin (Text-fig. 48). Both thoracic spiracles pale yellowish, con- 

 spicuously contrasting with the blackish background of the pleural regions. 

 Propleuron bare. [Burma] PAROPESIA Mesnil 



Key to Oriental Species of PARERIGONE Brauer 



(o*6* only known) 



1 Body uniformly covered with long yellow hair. Legs with the tibiae not noticeably 

 paler than the remainder, tibiae at most slightly reddish. Palpi distinctly darkened 

 basally. Genitalia with enormously large cerci that are more or less straight in 

 profile .......... eristaloides Mesnil 



- Body with mainly black hairing, pale hair almost confined to the sternopleura and 



the abdominal venter. Legs with the tibiae almost wholly reddish yellow, much 

 paler than the remainder of the legs. Palpi entirely clear yellow. Genitalia with 

 very small recurved cerci ....... malaisei Mesnil 



Tribe LINNAEMYINI 



This small tribe is represented in the Oriental Region only by the genus Linnaemya 

 Robineau-Desvoidy (of which Palpina Malloch and Xanthoerigone Townsend 

 are herein treated as new synonyms) . Up to now only a few species of Linnaemya 

 have been described or recorded from the region, but from studies made for the 

 present work it is clear that at least seventeen species occur within the Oriental 

 area as it is here defined. This number includes the few species previously in 

 Palpina and Xanthoerigone and some essentially Palaearctic species that are 'intru- 

 ders' into the northern fringes of the Oriental Region along the Himalayas; the 



