90 Orthorrhapha brachycera. 



species. It occurs on somewhat shaded piaces in woods, sitting on 

 low piants e. g. often on Urtica. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to middle Sweden, and in Finland. 



3. E. univittata Loew. 



1867. Loew, Berl. ent. Zeitschr. XI, 12 et 20,3. — 1903. Kat. palåarkt. 

 Dipt. II, 246. — Empis stercorea var. b. : 1842. Zett. Dipt. Scand. I, 378. 



Male. Eyes broadly separated, frons reddish yellow with an im- 

 pressed middle line; epistoma and jowls reddish yellow. Occiput 

 yellow, grey above and here with some long, black bristles. Labrum 

 ferruginous, brownish towards the apex; palpi yellow, with some 

 longish, dark hairs. Antennæ long, considerably longer than the head, 

 black; the first joint elongated, somewhat greyish, this and the second 

 with short, black hairs; the third joint much elongated, almost twice 

 as long as the two first together. Thorax yellow, somewhat duU, 

 with a broad, black or greyish black median stripe. The dorsocentral 

 bristles short, long behind, uniserial, black. Further a humeral bristle, 

 a posthumeral, a notopleural and a postalar bristle, all rather long, 

 black; sometimes a second, weaker notopleural bristle is present. 

 Scutellum grey with a broad yellow margin and four black marginal 

 bristles, the outermost weak; postscutellum yellow, grey in the middle. 

 Pleura yellow, metapleura with black hairs; the prothoracic spiracles 

 yellow. Abdomen yellow, somewhat shining, with a greyish black 

 median stripe, dilated at the incisures, and a similar stripe at each 

 side, just at the yellow venter. Abdomen is somewhat sparingly 

 haired with short, yellow hairs. Exterior genitalia 

 large, the lower lamellæ directed upwards, some- 

 what excised in the hinder, upwards turned, margin, 

 so that the lower (hinder) angle is drawn out in 

 a point; the upper lamellæ protrude forwards be- 

 tween the upper (forwards turned) margins of the 

 lower, their hinder angle is drawn out into a pro- 

 cess and below this there is a small tooth with a 



^ ^^'t/^ longer hair; sometimes a triangular process from 



E. titiivittata, , fer 



male genitalia ^'^^ upper lamellæ is seen, protruding between the 



lower (more or less backwards turned) margins of 

 the lower lamellæ. The upwards pointing edge of the upper lamellæ 

 is black and black haired, and the same edge of the lower lamellæ 

 has long, blackish hairs. Penis is somewhat thick, curved upwards 

 and forwards, with angles at the base and near the tip; it has a 

 small dilatation near the apex. The ventral lamella is large, but 



