. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Asilidae. 55 forceps, it is semiannular and forms, as it were, a ninth ventral seg- ment; it is either black and shining like the genitalia, or pruinose and then quite resembling a ventral segment. In the interior lies the penis which is curved upwards towards the apex, and here often three-branched. In the female the abdomen consists likewise of eight segments, but the eighth always forms part of the ovipositor, that is to say it is black, shining and otherwise indicating that it belongs to the ovipositor. The o
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Asilidae. 55 forceps, it is semiannular and forms, as it were, a ninth ventral seg- ment; it is either black and shining like the genitalia, or pruinose and then quite resembling a ventral segment. In the interior lies the penis which is curved upwards towards the apex, and here often three-branched. In the female the abdomen consists likewise of eight segments, but the eighth always forms part of the ovipositor, that is to say it is black, shining and otherwise indicating that it belongs to the ovipositor. The ovipositor consists of a basal part, the mentioned eighth segment, and of a second dorsal piece above; it is thus formed of two dorsal and one ventral piece, that is of the eighth segment and a dorsal part of the ninth; the ventral piece is generally so long that it stretches out to the end of the second dorsal piece. At the apex of the dorsal piece lie a pair of lamellae which are either lamelliform and wedged into the apex of the dorsal piece, or they are more styliform and free. The ovipositor may be shorter or longer and it is either cylindrical and conical, or strongly compressed, in rare cases it is thick and swollen. In some cases not only the eighth but also the sixth and seventh segments form part of the ovipositor which is then long and compressed. Legs more or less strong and bristly; the hairs on the legs fall in different categories; there is a common clothing of short, somewhat depressed hairs, then on certain places long and thin, erect hairs some of w^hich may be strong and bristly, often on the ventral side of the front femora; finally there are strong spine-like bristles to a different degree on femora and tibiae; also apical spurs are present. On the ventral or antero-ventral side of the front tibiEe and on the posterior side of the hind tibia? there is a special, dense, reddish pubescence, and a similar pubescence is found on the under side of the tarsi.
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
