. Fig. 73. Wing of D. oculatus d*. Female. Frons broad, greenish black, somewhat greyish pruinose. Epistoma broad, grey. Palpi large, yellowish grey. Front femora with shorter hairs below, hind femora without long hairs at the apex, and middle tibiæ with two antero-dorsal bristles. Abdomen not yel- low above but only at the base of the venter. Length 3,3—4,2 mm. V. oculatus is somewhat rare in Denmark, and has only been taken on a few occasions; Charlottenlund, Gm-re (Stæger); on Funen at Veflinge, and in Jutland at Laven near Silkeborg and at Sæby (H. J. Hansen). The dates are from ^h to the
. Fig. 73. Wing of D. oculatus d*. Female. Frons broad, greenish black, somewhat greyish pruinose. Epistoma broad, grey. Palpi large, yellowish grey. Front femora with shorter hairs below, hind femora without long hairs at the apex, and middle tibiæ with two antero-dorsal bristles. Abdomen not yel- low above but only at the base of the venter. Length 3,3—4,2 mm. V. oculatus is somewhat rare in Denmark, and has only been taken on a few occasions; Charlottenlund, Gm-re (Stæger); on Funen at Veflinge, and in Jutland at Laven near Silkeborg and at Sæby (H. J. Hansen). The dates are from ^h to the first part of August. Stæger took it on Alnus. Geographical distribution: — Northern and middle Europe down into France; towards the north to northern Sweden^ and in Finland. 2. D. Hoffmannseggii Meig. 1830. Meig Syst. Beschr. VI, 360, 5. — 1857. Loew, Neue Beitr. V, 47. - 1862. Schin. F. A. I, 187. — 1903. Kat. palåarkt. Dipt. II, 321. Male. Vertex blackish green, frontal triangle grey; eyes touching. Epistoma broad, grey. Palpi small, yellow. Occiput grey; postocular bristles black. Antennæ black or brownish black, third joint short; arista distinctly dorsal. Thorax green or bluish green, densely grey pruinose, a little shining. Pleura grey pruinose. Abdomen dark green, with the light from behind a darker middle-line is seen; second seg- ment more or less yellow on the basal part; abdomen clothed with short, black hairs, longer at the sides, and it has somewhat long hindmarginal bristles, longest on the first segment; the eighth segment
Size: 3237px × 1545px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
