500 Tachinidae. 



VII. 221, 4 {Nemoraea). — 1838. Zett. Ins. Lapp. 643, 37 et 1844. Dipt. Scand. 

 III, 1115, 111 {Tachina). — 1862. Schin. F. A. I, 452 {Nemoraea). — 1896. 

 Pand. Rev. Entom. XV, 35, 7 p. p. (Erigone). — 1898. Brauer, Sitzungsber. 

 Akad. Wiss. Wien, CVII, 530, 1 {Eurythia). — 1907. Villen. Ann. Soc. Ent. de 

 Fr. LXXVI, 387. — 1907. Kat. palåarkt. Dipt. III, 216. — 1921. Baer, Zeitschr. 

 f. angew. Ent. VII, 134. — 1924. Stein, Arcli. f. Naturgesch. 90, 6, 53 (Eurythia). 

 — Erigone indigens Pand. 1. c. 37, 11. — 1907. Villen. 1. c. LXXVI, 387. 



Male Frons above about half as broad as the eye, very protruding; 

 cheeks a little narrower, and jowls about half the height of the eye. 

 Orbits and cheeks yellowish white, with darker reflections, epistoma 

 more grey; jowls grey; frontal stripe black, seen from above. Frontal 

 bristles descending below middle of or to near end of second antennal 

 joint. Orbits with some black hairs; jowls with longish black hairs. 

 Occiput grey, with whitish hairs, and rows of black hairs behind post- 

 ocular bristles. Eyes with pale hairs. Antennæ black, second joint about 

 one third longer than third, this latter short rectangular, slightly 



dilated outwards; arista thickened in 

 basal half, second joint short, at most 

 slightly longer than broad. Palpi black, 

 well bristled below in apical half. 

 Thorax bluish black, somewhat shining, 

 greyish pruinose, especially in front; it 

 has four stripes, the median nearly as 

 broad as the lateral, abbreviated some- 

 what behind the suture; scutellum 

 Fig. 110. E. caesia S , antenna. black or more or less reddish at apex. 



Thorax black-haired; generally four 

 postsutural dorsocentrals; two præ- and three postsutural acrostichals. 

 Scutellum with generally five marginal bristles on each side, the apical 

 somewhat weaker, crossing. Abdomen bluish black, not or imper- 

 ceptibly reddish at the sides; third to fifth segment with a broad 

 whitish pruinose front band, shifting according to view. Abdomen 

 black-haired; third segment with a pair of discai and marginal bristles, 

 fourth with a pair of discai and a row of marginal. Fifth sternite 

 cleft to middle or a little beyond, the excision rectangular. Genitalia 

 somewhat large; præhypopygial segment shining, with long hairs. 

 Hypopygium with hairs and some bristles. Upper and lower forceps 

 much like those in radicum; upper forceps broad at base, but not 

 wing-hke dilated, a little carinate in the middle but without tooth, 

 the apical part spine-shaped, straight; arms of lower forceps rather 

 robust, with a scale-Uke piece at base; the inwardly issuing arm 



