. Fig. 95. Antenna of S. leucnrus 9. X 85- From a dried object. Female. Epistoma broad, coloured as in the male, and bluish and shining below. Antennse shorter than in the male, the third joint pointed oval, arista a little longer than the antennae. Length to about 3 mm. S. leucnrus is rare in Denmark, we have only three specimens, two males and a female, which I bred from a hollow beech at 0rholm. In the beech were larvae of Xylomyia maculata and on the Vt 1908 I took home a portion of the quite loamy decaying wood; in the fol- lowing week came the Si/stenus, but I did not detect the pupa
. Fig. 95. Antenna of S. leucnrus 9. X 85- From a dried object. Female. Epistoma broad, coloured as in the male, and bluish and shining below. Antennse shorter than in the male, the third joint pointed oval, arista a little longer than the antennae. Length to about 3 mm. S. leucnrus is rare in Denmark, we have only three specimens, two males and a female, which I bred from a hollow beech at 0rholm. In the beech were larvae of Xylomyia maculata and on the Vt 1908 I took home a portion of the quite loamy decaying wood; in the fol- lowing week came the Si/stenus, but I did not detect the pupae. Geographical distribution:— Northern and middle Europe down into Germany; it occurs in England, but is not known north of Den- mark. The species is only known from bred specimens. IV^ Hydrophorinae. 19. Loew. Species of very small size and of not or only slightly metallic, blackish, greyish or yellowish colour. Head about as broad as or a little broader than thorax, somewhat semiglobular. There are ocellar, outer vertical and postvertical bristles, and a pair of small bristles on the posterior side of the ocellar tubercle. The eyes are slightly and short-hairy, almost microscopically; they are separated in both sexes; the epistoma is narrow in both sexes, and only slightly broader in the female than in the male. The postocular bristles form a single row. The antennae placed near to each other, somewhat above the middle; they are not long, a little longer in the male than in the female; the first joint short, the second small and simple, the third somewhat pointed oval, a little longer in the male than in the female, and in this latter sex less pointed; it has a characteristic shape as the upper margin is convex, the lower straight or nearly so.
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
