332 Tachinidae. 



in male; front tarsi in female simple. Wings with first posterior cell 

 open, ending somewhat before apex of wing; discai angle rectangular; 

 no costal spine. 



Only one species is known, also occiirring in Denmark ; it is known 

 as parasitic on Catocala sponsa. 



1. T. saltuum Meig. 



1824. Meig. Syst. Beschr. IV, 329, 155 (Tackina) et 1838. VII, 255, 12 

 {Exorista). — 1859. Zett. Dipt. Scand. XIII, 6117, 130—131 {Tachina). — 

 1862. Schin. F. A. I, 465 {Exorista). — 1896. Pand. Rev. Entom. XV, 20, 27 

 {Exorista). -^ 1907. Kat. palåarkt. Dipt. III, 246 {Exorista). - 1907. Villen. 

 Ann. Soc. Ent. de Fr. LXXVI, 386 {Exorista). — 1924. Stein, Arch. f. Natur- 

 gesch. 90, 6, 88. — Tachina demens Zett. 1844. Dipt. Scand. III, 1108, 105. - 

 1893. B. B. Denkschr. Akad. Wiss. Wien, LX, 219. — 1907. Kat. palåarkt. 

 Dipt. III, 261. — T. argentigera Zett. 1844. 1. c. III, 1133, 130. — T. argentifera 

 Zett. (nec Meig.) 1855. 1. c. XII, 4699, 130 et 1859. XIII, 6117, 130. — The- 

 lymyia Loeivii B. B. 1891. 1. c. LVIII, 331 et 1893. LX, 115. — 1907. Villen. 

 Wien. Ent. Zeitg. XXVI, 251, 20. 



Male. Frons above much broader than the eye; cheeks broad. 

 Orbits greyish, downwards together with cheeks silvery; jowls 

 whitish grey; frontal stripe velvet black or brownish black. Orbits 

 and jowls with black hairs. Occiput grey, with sparse whitish hairs, 

 and black hairs behind postocular bristles. Eyes pale-hairy. Antennæ 

 black; arista shorter than antennæ, distinctly thickened in fully 

 the basal half. Palpi yellow. Thorax bluish black, shining, a little 

 greyish pruinose, especially in front and at the sides; there are four 

 black stripes, the median narrow, diverging and abbreviated behind 

 the suture, the lateral interrupted at the suture and forming two 

 spots; scutellum reddish brown, dark just at base. Thorax with 

 short black hairs. Abdomen black, whitish pruinose on third, fourth 

 and fifth segment, shifting with dark according to view; there are 

 narrow black hind margins to the segments and an indistinct darker 

 middle stripe. Abdomen is black-haired, with discai and marginal 

 bristles, on second segment a pair of marginal, on third a pair of 

 discai and marginal and on fourth a pair of discai and a row of not 

 numerous marginal. Genitalia small, hidden under the venter; upper 

 forceps cleft to near base into two parallel arms which are slightly 

 recurved. Legs black. Wings brownish tinged at base, outwards 

 nearly clear; veins brown. Squamulæ white. H alteres brownisli yellow. 



Female. Quite similar, frons of the same breadth. 



Length 9 mm. 



