Diptera danica : genera and species of flies hitherto found in Denmark . Fig. 53. Antenna of C. solstitialis d,from the inside. X Fig 54. Wing of C. solstitialis d- hairs, frons with very few short, pale hairs. Antennæ with the thirdjoint a little larger than in the male. Thorax æneous, often copperyor violet on the disc, more or less shining, dull at the anterior end;it is coarsely punctate and both on disc and pleura clothed with veryshort, black, bristly hairs. Abdomen with the shining sides broader J18 Syrphidae. than in the male. Wings a little less blackish; upper cross-vein moreste


Diptera danica : genera and species of flies hitherto found in Denmark . Fig. 53. Antenna of C. solstitialis d,from the inside. X Fig 54. Wing of C. solstitialis d- hairs, frons with very few short, pale hairs. Antennæ with the thirdjoint a little larger than in the male. Thorax æneous, often copperyor violet on the disc, more or less shining, dull at the anterior end;it is coarsely punctate and both on disc and pleura clothed with veryshort, black, bristly hairs. Abdomen with the shining sides broader J18 Syrphidae. than in the male. Wings a little less blackish; upper cross-vein moresteep than in the male, the lower angle more pronounced. Squamulæwhitish with a whitish fringe. Length 6,8—8,4 mm. Not rarely specimens occur, especially females, which are moreor less brown on abdomen, often with a dark middle stripe, and alsowith the venter brown; they are I think not fully mature, and theyhave generally also less darkened wings. Remarks: Loew thinks (Stett. ent. Zeitg. IV, 1843, 279) that Zetter-stedt has partly mixed solstitialis with specimens of chalyheata^ especiallybecause he speaks of a yellowish wing


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