372 Syrphidae. 



the basal third yellow, hind tibiæ with a brown ring below the base 

 and with the apical part black; anterior tarsi brownish towards the 

 end, hind tarsi black; often the anterior femora and tibiæ have faintly 

 brownish markings. The hind femora thick and clavate, hind tibiæ 

 a little dilated and curved at the end, hind metatarsi thickened. The 

 legs with short, yellow hairs, only below the base of anterior femora 

 slightly longer hairs; hind femora with two rows of black bristles 

 below on the apical half. Wings more or less brown. Squamulæ 

 and fringes whitish. Halteres yellow. 



Fig. 135. Wing of S. clunipes cf- 



Female. Similar to the male; frons and epistoma a little broader; 

 third joint of antennæ slightly larger. Abdomen broader behind and 

 thus more clavate ; it is either quite black or more or less reddish 

 brown, or brown on third, fourth and fifth segments, and also some- 

 times on the hind part of second segment. 



Length 5,3 to about 7 mm. 



S. clunipes is not common in Denmark ; Charlottenlund, Ermelund, 

 Dyrehaven, Bagsvær Sø, Egebæks Vang, Herlufsholm; in Jutland in 

 Grejsdal at Vejle. My dates are '^/e — ^h, it is most common in 

 autumn. It occurs in low herbage in woods on shaded, humid piaces; 

 I have taken it on various flowers f. inst. on Rubus. 



Geographical distribution : — Europe down into Italy ; towards 

 the north to northern Sweden, and in Finland. 



25. Neoascia WiUist. 



{Ascia Meig.). 

 Small, narrow species similar to Sphegina, but smaller and the 

 abdomen less narrowed at the base. The colour is black or æneous 

 with or without one or more yellow bands or pairs of spots on ab- 

 domen, not rarely the male with bands, the female unicolorous. The 

 genus is very nearly related to Sphegina and in most respects similar 

 to it. The head is relatively less broad and only slightly broader 



