. Fig. 59. Wing of D. Oldenbergi ^. slightly curved and curved very little downwards towards apex. Halteres black or blackish brown. Female. Similar; frons a little broader, distinctly broader than high; antennæ smaller and paler below third joint; palpi larger, brownish, with long bristles. Abdomen with first segment roundly excised in the hind margin and thus short in the middle, second segment elongated, fourth a little narrowed but more than twice as broad as long, fifth and sixth without tergal piates; the last narrow segment reddish, Length 2,8—3,5 mm. D. Oldenbergi is somewhat rare in D
. Fig. 59. Wing of D. Oldenbergi ^. slightly curved and curved very little downwards towards apex. Halteres black or blackish brown. Female. Similar; frons a little broader, distinctly broader than high; antennæ smaller and paler below third joint; palpi larger, brownish, with long bristles. Abdomen with first segment roundly excised in the hind margin and thus short in the middle, second segment elongated, fourth a little narrowed but more than twice as broad as long, fifth and sixth without tergal piates; the last narrow segment reddish, Length 2,8—3,5 mm. D. Oldenbergi is somewhat rare in Denmark, and all specimens have been bred from pupæ; Utterslev Mose in May (Schlick), Dam- husmosen in April and May (Schlick, Larsen, the author); the pupæ were found in flood refuse, the imagines were bred in May. The male was hitherto not known. Geographical distribution: — Besides from Denmark only known from Germany. 5. D. abdominalis Fall. 1823. Fall. Dipt. Suec. Phytom. 5, 2, ? {Trineura). - 1830. Meig. Syst. Beschr. VI, 225, 40, ? {Phora). - 1848. Zett. Dipt. Scand. VII, 2867, 17, ? {Trineura). — 1864. Schin. F. A. II, 336 (Phora). — 1901. Beck. Abhandl.
Size: 3243px × 1541px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
