52 Oithorrhapha brachycera. 



the males were extreniely quick, and they weie seen hovering in tlie 

 air in small swarms. Thus the male of fhis species would seeni mucli 

 moie lively than is the case with the other species. 



Geographical distribution: — Northern and middle Europe down 

 into Francc. its northern limit lies in the snuthern Swcden, and there 

 it is rare. 



8. O. microleon L. 

 1761. Musca, Linn. Fn. Succ. 1781. — 184-2. Stratimmjs, Zett. Dipt. 

 Scand. I, 137. o. - 1862. Schiii. F. A. 1, 20. — 1903. Kat. palSaikl. Dipt. 

 II, 20. 



Male. Eyes bare, facets in about the lower third niucli smaller 

 than above, the dividing line sharp: colour greenish with a purplish 

 band on the dividing line. Face somewhat protruding, epistoma crest- 

 shaped; front and face black with long, yellow pubescence. Antennæ 

 black. first joint twice as long as the second. Thorax blackish brown 

 with long, yellow jjubescence ; beneath the pubescence is paler. Scutellum 

 with yellow spines. Abdomen broad, black, on second, third and fourth 

 segment a narrow, transverse, yellowish white stripe on each side. at 

 the hind margin, tlie fifth segment with a narrow, pale hind margin. 

 Venter pale yellow, often with a pair of small, black spots on the middle 

 of the third and fourth segments. Abdomen sparingly flothed with yellow 

 hairs, on the venter with shorter, pale hairs. Femora blackish with yellow 

 tips; tibiæ blackish with the basal part yellow; tarsi blackish. paler 



Fig. 19. Wing of O. »lici-oleon. 



at the bases. Anlerior femora with long, yellowish pubescence, hind 

 femora and tibiæ short haired. Wings hyaline with yellow veins. 

 cubital vein not fnrked, the first of the veins rising from the discai 

 cell very thin, the third wanting. Balteres yellow. 



Female. Eyes witli the purplish band above the middle. Front 

 and face black. front with two yellow stripes below the ocelli, close 

 to the impressed, longitudinal line; hinder eye margin with golden 

 pubescence. Thorax on the disc with short, depressed, golden pube- 

 scence. The rest as in the male. 



Lenglh S — 9,5 mm. 



This species is also easily distinguished by its exterior, and the 

 crest-shaped epistoma is likewise characteristic. 



