Dolichopodidae. 387 



They occur oii the leaves of bushes and in low herbage in shady 

 piaces, and often near water. 



Of the genus 3 species are known from the palæarctic region; 

 two of them are European and both occur in Denmark. 



Tahle of Species. 



1 . Antennæ black ; posterior cross-vein behind the middle of 



the postical vein 1 . moUiculus. 



— Antennæ with the basal joints yellow, the third brown; 



posterior cross-vein before the middle of the postical vein 2. concinnus. 



1. C. moUiculus Fall. 



1823. Fall. Dipt. Suec. Dol. 23, 35 (Dolichopus). — 1843. Zett. Dipt. 

 Scand. II, 488, 10 {Chrysotus). — 1862. Schin. F. A. 1, 185. — 1903. 

 Kat. palaarkt. Dipt. II, 349. — Chrysotus laetns Meig. 1824. Syst. Beschr. 

 IV, 43, 8. 



Male. Vertex and frons green, slightly greyish pruinose. Epistoma 

 green. Palpi yellowish white. Occiput green, slightly greyish pruinose ; 

 postocular bristles whitish. The vertical bristles yellow. Antennæ black. 



Fig. 12:2. Antenna of C. moUiculus d- X 115. 



Thorax bright green or somewhat golden green, a httle greyish pruinose ; 

 all bristles yellow. Plem-a green, more or less greyish pruinose, 

 most posteriorly; metaepimera yellow; propleura with a pale pro- 

 thoracic bristle. Abdomen green or golden green, sometimes a httle 

 coppery, clothed with somewhat longish, yellow hairs; there are distinct 

 and somewhat long hindmarginal bristles, longest on the first segment. 

 Venter yellow, with pale hairs. Legs yellow, the last tarsal joint 

 blackish. The legs have pale hairs, somewhat bristly at the apex of 

 the front coxæ; posterior coxæ with a pale bristle; femora mainly 

 short-haired, posterior femora with a littie longer hairs below towards 

 the apex; middle femora with one preapical bristle, hind femora with 

 two, one above the other; middle tibiæ with two antero- and two 

 postero-dorsal bristles, hind tibiæ with some dorsal bristles; all bristles 

 yellow. Wings yellowish tinged ; veins yellow ; posterior cross-vein a 

 littie before the middle of the wing, but behind the middle of the 

 postical vein. Squamulæ yellow, with a yellow fringe. Halteres yellow. 



25* 



