. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Dolichopodidae. they may be quite wanting, also on the first segment. The legs are generally somewhat long and slender, sometimes more robust; they show very often sexual dimorphism, being variously shaped or adorned in the male, often rather peculiar; thus the tarsi (front, middle or hind) may have one or more joints dilated or plumed, or otherwise distinguished by shape or adornments with hairs, bristles or thorns, or some joints may be unusually shortened or elongated; or the tibiae may be peculiarly shaped, c
. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. Dolichopodidae. they may be quite wanting, also on the first segment. The legs are generally somewhat long and slender, sometimes more robust; they show very often sexual dimorphism, being variously shaped or adorned in the male, often rather peculiar; thus the tarsi (front, middle or hind) may have one or more joints dilated or plumed, or otherwise distinguished by shape or adornments with hairs, bristles or thorns, or some joints may be unusually shortened or elongated; or the tibiae may be peculiarly shaped, curved, dilated etc., or provided with special hairs or bristles. Also the femora may have special bristles in the males, and sometimes a fringe of long hairs below\ Moreover the legs, especially the tarsi, are often longer in the male than in the female. — The coxai are a little elongated, especially the front coxae; these latter are placed higher than the posterior coxae on account of the shape of the thorax. The front legs are sometimes raptorial {Hydro- phorus), the femora and tibiae more or less armed with spines below, and the femora somewhat thickened. The legs have generally short, sometimes longer hairs, and are generally provided with numerous bristles, especially on the dorsal side of the tibiae, and most on the posterior tibiae. Sometimes the legs are less bristly to almost bare. The bristles on the hind tibiae are in a fev/ genera continued out on the metatarsus. The tibiae have also apical bristles, often small or wanting on the front tibiae. The posterior or the hind femora have generally one, sometimes more preapical bristles; sometimes they have none. The anterior coxae have as a rule bristles or bristly hairs on the anterior or outer side towards the apex, and the hind coxae have generally one, sometimes several, characteristic bristles on the outside. In Por- phyrops and Xiphandrium the Fig. 3. Dolichopus ungulatus. males have often a flat spine, Empodium, p
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
