290 



SYRPHIDiE. 



inner orbit of eyes ; a nearJy bare irregular median stripe on 

 face. Cheeks and under side of head Wackish, with soft, com- 

 paratively short yellowish hairs. Proboscis blackish. Antennae 

 dull dark brown, 3rd joint with greyish tomentura, arista brownish- 

 yellow, with 16 or 17 long hairs along the entire upper side and 

 about 12 shorter hairs on apical half of under side. Occiput 

 blackish-grey with a little minute yellow pubescence ; some long 

 brownish-yellow hairs behind vertex and yellowish-grey hairs on 



fig. 59. — Arctopliila simplicipes, Brun., 

 arista. 



under side. Thorax black, barely shining, with a pair of median, 

 moderately narrow, barely perceptible, greyish stripes and a nar- 

 rower one between them. The whole dorsum and the scutellum 

 covered with thick long canary-yellow pubescence, except narrowly 

 on anterior margin. The pubescence extends thickly over the 

 vicinity of the mesopleura. Abdomen moderately shining black, 

 with thick yellowish pubescence on anterior corners, and bright 

 red pubescence on major (apical) part of last segment and on the 



Fig. 60.— Arc/ophila simplicipes, Brun., 

 hind leg. 



concolorous red genitalia. On the rest of the dorsum the pubes- 

 cence is black, short and very fine ; a little longer on hind borders 

 of segments and obviously long and thick on the sides. Venter 

 black, with short sparse yellowish hairs, hind margins of segments 

 narrowly pale, last segment red. Legs black, tarsi reddish ; 

 femora mostly covered with short black pubescence, but with a 

 few longer fine hairs below ; rest of legs with minute black pubes- 

 cence, some short yellow pubescence on outer side of middle tibise'. 

 Wings grey, a moderately wide dark brown band from middle of 



