. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. 250 Phoridae. with bristles on the sides of second segment. Venter with distinct hairs. Hypopygium mainly as in latifemorata^ perhaps a little larger, not shining below; anal tube as in latifemorata. Legs yellow, hind tibiæ and tarsi slightly darker, middle coxæ with a black spot behind, and hind femora blackish at apex; the hind femora less dilated than in latifemorata and not broad towards apex, the dorsal margin there- fore evenly curved from the middle towards both ends; hind femora haired as in l


. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. 250 Phoridae. with bristles on the sides of second segment. Venter with distinct hairs. Hypopygium mainly as in latifemorata^ perhaps a little larger, not shining below; anal tube as in latifemorata. Legs yellow, hind tibiæ and tarsi slightly darker, middle coxæ with a black spot behind, and hind femora blackish at apex; the hind femora less dilated than in latifemorata and not broad towards apex, the dorsal margin there- fore evenly curved from the middle towards both ends; hind femora haired as in latifemorata and hind tibial bristles similar, the arrange- ment mentioned under latifemorata generally well marked. Wings brownish, but less strongly than in latifemorata; costa reaching beyond the middle, 1 generally shorter than 2, but variable and sometimes a little longer; costal cilia moderately short to moderately long; fourth vein a little less curved than in latifemorata. Halteres yellow\ Female. Similar to the male, but often paler; antennæ smaller; the abdominal tergites of a special shape (fig. 81), the second tergite has the sides with the bristles somewhat protruding, but is narrowed behind, the third tergite is semi- circular or trapezoidal, the fourth is narrow, trapezoidal, most narrow in front, sometimes pointed so that the incision here reaches to the middle line, the fifth tergite is a little broader, the sixth again somewhat narrower so that these three tergites form together an elliptical plate; such is the shape in extreme cases, but often the tergites are broader so that the constriction is less marked, only resulting in the tergites after the second being somew^hat narrowed; on the ventral side abdomen has bristly hairs at the hind margins of third to sixth segments; hind femora haired as in the male and the hairs below the basal half as long as in this sex. Length 1,7—2,8 mm. A. ruficornis is common in Denmark; Ermelund, Dyrehaven, Lyngby Mose, Hol


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