. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 185 three ocelli on the vertex, and some small hairs. The antennæ are inserted near to each other in the middle, or sometimes a little above the middle. They are five-jointed; the first joint is very short, the second about globular, the third more or less elongated, attenuated towards the apex and compressed; the two last joints form a shorter or longer style, the first joint of which is short, the second long and terminating in a bristly part, which is bare. Epistoma is very nar- row; jow
. Diptera danica : genera and species of flies hitherto found in Denmark. Diptera -- Denmark. Empididae. 185 three ocelli on the vertex, and some small hairs. The antennæ are inserted near to each other in the middle, or sometimes a little above the middle. They are five-jointed; the first joint is very short, the second about globular, the third more or less elongated, attenuated towards the apex and compressed; the two last joints form a shorter or longer style, the first joint of which is short, the second long and terminating in a bristly part, which is bare. Epistoma is very nar- row; jowls are not developed, the eyes going quite to the mouth aperture. About the mouth parts I can only say very little, as I have only been able to examine dried specimens. The proboscis is very short, only stretching slightly out of the mouth aperture; labrum is strong, broad at the base, curved downwards towards the apex; the maxillary palpi are short, one-jointed, somewhat club-shaped. Thorax is rectangular, rather highly arched above; prothorax is very small, and likewise metathorax. There are somewhat short uniserial dorsocentral bristles and biserial acrostichal bristles; the former show a long bristle behind. A humeral bristle, a pair of posthumeral, one to three notopleural, a supraalar and a postalar bristle present. Scutellum has about four to eight marginal bristles. The metapleura are bare. Abdomen is somewhat slender, often a little compressed; it consists of eight segments; as usual the first is small, the second the longest. In the male the abdomen is only slightly attenuated towards the apex; the male genitalia are small, in flavipes they form a very small forceps, consisting, so far as I have seen, of a pair of straight lamellæ with small teeth at the apex, and between the lamellæ a thin, styliform process (penis'?); in clavipes the forceps is a little larger, and it seems to be somewhat unsymmetrical. In the female the abdomen is pointed towards the apex, and i
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
