Diptera danica : genera and species of flies hitherto found in Denmark . Fig. 38. Wing of O. geniculata d. conspicuously haired than in elegans. Fourth abdominal segment witha distinct wart in the middle of the hind margin, the fifth with animpression on each side at the hind margin. Hind femora not black. Fig. 39. Wing of O. geniculata 9- setulose. Wings less tinged than in the male or almost not tinged;upper marginal cross-vein distinctly recurrent and the lower a littleangular with the angle inwards. 102 Syrphidae. Length about 5,5 mm. O. geniculata is very rare in Denmark, only two specime
Diptera danica : genera and species of flies hitherto found in Denmark . Fig. 38. Wing of O. geniculata d. conspicuously haired than in elegans. Fourth abdominal segment witha distinct wart in the middle of the hind margin, the fifth with animpression on each side at the hind margin. Hind femora not black. Fig. 39. Wing of O. geniculata 9- setulose. Wings less tinged than in the male or almost not tinged;upper marginal cross-vein distinctly recurrent and the lower a littleangular with the angle inwards. 102 Syrphidae. Length about 5,5 mm. O. geniculata is very rare in Denmark, only two specimens, bothfemales, have been taken in Lyngby Mose on ^/e 1909 and i*/(i 1915(the author); the latter specimen is remarkable as it has the uppermarginal cross-vein perpendicular and the lower not angular, the vena-tion thus being quite as in the male. Geographical distribution:— The species is recorded from allEuropa down into Italy; towards the north to northern Sweden, andin Finland; it must, however, be remembered, that it has perhaps beenconfounded with the following species. 3. O. intermedia n. sp, Orthoneura geniculata Loew, 1857. Wien. ent. Monatschr. I, 8. —Chrijsogaster geniculatus Zett. 1859. Dipt. Scand. XIII, 6025, 9, p. p. (speci-mina stigmate pallescente, absque puncto basali fusco e
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