Archive image from page 184 of Diptera danica genera and Diptera danica : genera and species of flies hitherto found in Denmark dipteradanicagen06lund Year: 1907 Hypocera. 173 with bristles as in flavitnana, but the lower anterior bristle on middle tibiæ quite minute and placed at the apex, and hind tibiæ with fewer (only two) apical spurs and further front tibiæ with no dorsal apical spur; hind tibiæ shaped as in flavimana. Wings only slightly greyish yellow, veins brown; costa reaching to the middle, 1 about equal to 2 (2 + 3); costal cilia a little longer than in flavimana; third vein fo
Archive image from page 184 of Diptera danica genera and Diptera danica : genera and species of flies hitherto found in Denmark dipteradanicagen06lund Year: 1907 Hypocera. 173 with bristles as in flavitnana, but the lower anterior bristle on middle tibiæ quite minute and placed at the apex, and hind tibiæ with fewer (only two) apical spurs and further front tibiæ with no dorsal apical spur; hind tibiæ shaped as in flavimana. Wings only slightly greyish yellow, veins brown; costa reaching to the middle, 1 about equal to 2 (2 + 3); costal cilia a little longer than in flavimana; third vein forked, but the anterior branch very thin, the fork longish; the third vein has at apex a little elongated swelling, and it has fine hairs in Fig. 64. Wing of H. irregularis (. the whole length; foiirth vein strongly curved in its first part, for the rest straight, that and the fifth vein rather diverging. Halteres black. Female. Quite similar, only clypeus slightly more distinct, and the apical swelling of third vein a little more pronounced. Length 2,7—3,5 mm. As seen this species is nearly related to and very similar to flavimana, but it is distinguished with certainty especially by the forked third vein, the broader and duller frons, the quite dull and more hairy abdomen, the shorter first costal division, and the lower bristle on middle tibiæ being minute and placed at the apex, and fmally also by the want of a dorsal apical spur on front tibiæ. Wood says that there is no lower bristle on middle tibiæ, he has, I think, not reckoned this very small one. At present there are known in all seven specimens of the species, including three females which sex was not known hitherto; all seven specimens show the thin, but distinct anterior branch of the fork. H. irregularis is rare in Denmark, I have taken in all five spec- imens, two males and three females, in Geel Skov on U—/lo in 1918 to 1921; they were taken on leaves in a plantation of young syca- mores; on '/lo a
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