Digonochaeta. 451 



2. D. setipennis Fall. 



1810. Fall. Vet. Acad. Handl. XXXI, 270 et 1820. Dipt. Suec. Muse. 

 19, 37 (Tachina). — 1824. Meig. Syst. Beschr. IV, 349, 191 (Tachina) et 1838. 

 VII, 242, 1, Tab. LXXI, Fig. 12—15 {Thryptocera). — 1844. Zett. Dipt. Scand. 

 III, 1082, 79 et 1849. VIII, 3239, 79 et 1852. XI, 4314, 79 (Tachina). — 1862. 

 Schin. F. A. I, 518 (Thryptocera). — 1889. B. B. Denkschr. Akad. Wiss. Wien, 

 LVI, 103, Tab. V, Fig. 87. — 1896. Pand. Rev. Entom. XV, 71, 3. — 1907. 

 Kat. palåarkt. Dipt. III, 385. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 369. 

 — 1924. Stein, Arch. f. Naturgesch. 90, 6, 128, 2. 



Male. Frons broad, considerably broader than the eyo; jowls 

 about half the height of the eye or a little more. Orbits, cheeks and 

 jowls grey; frontal stripe obscurely brownish seen from above, from 

 in front whitish grey pruinose. Frontal bristles descending to about 

 end of second antennal joint. Orbits with very few hairs; cheeks 

 hairy above and with a row of hairs stretching quite down, being 

 longer downwards and ending below with a long bristle; jowls with 

 black hairs. Eyes not haired. Occiput grey, with a few brownish 

 hairs below and for the rest all over with black hairs. Antennæ black, 

 third joint may be a little pale at base; it is fully thrice as long as 

 second, somewhat broad; arista with first and second joint elongated 

 and of the same length, third a little longer, all three geniculate 

 towards each others. Palpi yellowish to black. Thorax blackish, grey 

 pruinose, with four black stripes, the median abbreviated behind, 

 the lateral divided at the suture into two spots; scutellum grey 

 pruinose. Thorax black-haired ; two or three præsutural acrostichals; 

 small apical hairs on scutellum parallel. Abdomen blackish, the three 

 last segments with a broad grey pruinose front band, shifting to dark 

 according to view. Abdomen black-haired; second segment wdthout 

 bristles, third with a pair of discai and marginal and fourth with 

 a pair of discai and a row of marginal; fifth segment with two rows. 

 Legs black. Wings a little brownish tinged; veins blackish brown; 

 first posterior cell narrowly open, ending at apex of wing; discai 

 angle obtuse, apical cross- vein concave; posterior cross-vein nearer 

 medial cross-vein than the angle; subcostal vein with bristles in 

 whole length, cubital vein with bristles well beyond medial cross- 

 vein or to near end, and postical vein with bristles on basal part; 

 a small costal spine. Squamulæ white. Halteres yellowish with dark 

 knob, or brownish. 



Female. Quite similar and with frons of the same breadth. 



Length 4 — 6 mm. 



29* 



