198 Orthorrhapha brachycera. 



bristles a notopleural and a postalar bristle present, both yellow, and 

 besides there are some small hairs in the præsutural depression. 

 Scutellum with six yellow marginal bristles. Pleura black, shining. 



'^CElf 



Fig. 78. Antenna of Oe. flavipes. x 65. 



Abdomen black, shining, with whitish yellow hairs. Venter similarly 

 coloured and haired. Abdomen may be slightly translucently brownish 

 towards the base. Legs whitish yellow, hind tibiæ blackish brown, 

 the base whitish, front tibiæ generally somewhat brownish, but the 

 base pale; the hind femora often slightly brownish just at the apex; 

 tarsi brownish, the basal part of the hind metatarsi yellow. The legs 

 are short-haired with pale yellow hairs; the hind femora have long, 

 yellow hairs above on the basal half or more, the hairs becoming 

 short towards the apex; below there are rows of short, black spines 

 on each side on the apical part. Wings somewhat brownish tinged, 

 especially towards the apex. Veins brown to dark brown. Stigma 

 brown. Halteres yellow. 



Female. Quite similar to the male, but the eyes well separated, 

 frons black, shining. Ovipositor blackish. (In my only female specimen 

 the notopleural bristle is black). 



Length 3 — 3,7 mm. 



Oe. flavipes is somewhat rare in Denmark ; Charlottenlund (Stæger), 

 Dyrehaven, and on Lolland at Maribo (Schlick). The dates are ^/e — ^'^/t. 

 Two specimens from Dyrehaven are stated to have been bred from 

 wood. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to middle Sweden. 



3. Oe. stigmatella Zett. 



1842. Zett. Dipt. Scand. I, 246, 2. ~ 1859. Loew. Neue Beitr. zur 

 Kenntn. der Dipt. VI, 49, 8. — 1862. Schin. F. A. I, 81. — 1903. Kat. 

 palåarkt. Dipt. II, 259. 



Male. Eyes touching; epistoma black, shining; palpi blackish 

 brown. Occiput black, shining. with black, below with whitish hairs. 

 Antennæ somewhat short, blackish brown, the style thin, bristle- 

 shaped. Thorax black, with very short, whitish yellow hairs, leaving 

 two narrow, bare stripes. Of bristles a notopleural and a postalar 

 bristle present, both yellow, and besides a couple of smaller hairs in 



