. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 80 Orthorrhapha brachyceia. Table of Species. 1. The spine-like bristles on the tibiae black ; sixth and seventh abdominal segments in the male steel-blue 1. cyanurus. â The spine-like bristles on the posterior side of the front tibiae and on the anterior and posterior sides of the middle tibiae yellow; sixth and seventh abdominal segments in the male not steel-blue 2. cothurnatus. 1. N. cyanurus Low. 1849. Low, Linn. Entom. IV, 84, 49, (Itamus) â 1862. Schin. F. A. L 155, (Asilus). â 1903. Kat. palaarkt. Dipt. I


. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 80 Orthorrhapha brachyceia. Table of Species. 1. The spine-like bristles on the tibiae black ; sixth and seventh abdominal segments in the male steel-blue 1. cyanurus. â The spine-like bristles on the posterior side of the front tibiae and on the anterior and posterior sides of the middle tibiae yellow; sixth and seventh abdominal segments in the male not steel-blue 2. cothurnatus. 1. N. cyanurus Low. 1849. Low, Linn. Entom. IV, 84, 49, (Itamus) â 1862. Schin. F. A. L 155, (Asilus). â 1903. Kat. palaarkt. Dipt. II, 155. â 1842. Asilus aestivus Zett. Dipt. Scand. I, 167, 3, et 1855. XII, 4561, 3. Male. Eyes in the living specimens greenish, slightly metallic. Face yellow or greyish white; epistomal beard black above, yellow or white below. Palpi black with black and whitish hairs. Frons and vertex dark grey with black hairs. Occiput grey, the occipito- orbital bristles black, curved strongly forwards; the hairs white. Antennae black, the two first joints black haired, the hairs below somewhat long. Thorax grey, ash-grey or nearly bluish grey behind; the stripes blackish, the middle stripe with a distinct median line; the side stripes large, distinctly divided into three spots. The disc clothed with longish, erect, black hairs which are longer behind; the bristles black, the dorsocentral rows continued a little beyond the middle. Scutellum with erect, pale hairs and black marginal bristles. Pleura grey pruinose with longer, yellowish hairs; the long hairs on meta- and hypopleura yellow. Abdomen blackish; with the light from be- hind slightly [shining with light grey hind margins of the segments and the anterior corners of the second segment of the same colour; the three last segments somewhat narrowed, steel-blue, shining. Venter grey, the three last segments shining black. Abdomen clothed with somewhat longish, yellow hairs, along the middle line the hairs are black; the hairs


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