490 Tachinidae. 



distinct costal spine and discai angle with a stort veinlet; 



front tarsi in female simple 1. truncata. 



— Thorax witliout præsutural intraalar bristle; wings without 

 costal spine and discai angle witliout or with a minute vein- 

 let ; front tarsi in female dilated 4. 



4. Palpi blackish, sometimes paler but not yellow 5. 



— Palpi yellow 2. vivida. 



5. Frons in male narrow, about one fourtii as broau as the eye, 



in female not as broad as the eye 3. connivens. 



— Frons in male half as broad as the eye or more, in female as 

 broad as or broader than the eye 6. 



6. Frons in male about as broad as the eye, in female consider- 

 ably broader than the eye, strongly protruding, silvery; head 



almost not higher than long 4. conjugata. 



— Frons in male half as broad as the eye, in female about as 

 broad as the eye, moderately protruding, more or less 

 yellowish; head higher than long 5. radicuni. 



7. Palpi black; apical scutellar bristles somewhat small, 

 crossing 6. caesia. 



— Palpi yellow; apical scutellar bristles strong, not crossing. . 7. nemorum. 



8. Large species; frons in male narrow (Ys — Ye of ^^^ breadth 

 of the eye), in female as broad as the eye; antennæ more or 



less pale in both sexes; scutellum with small apical bristles. . 8. rudis. 

 ■ — Rather small species; frons in male broader, nearly one 

 third of the eye, in female broader than the eye; antennæ 

 in male black, in female more or less pale ; scutellum without 

 small crossing apical bristles 9. Nielseni. 



1. E. truncata Zett. 



1838. Zett. Ins. Lapp. 642, 34 et 1844. Dipt. Scand. III, 1089, 86 et 1859. 

 XIII, 6095, 86 (Tachina). — 1896. Pand. Rev. Entom. XV, 33, 4 {Erigone). 



— 1898. Brauer, Sitzungsber. Akad. Wiss. Wien, CVII, 537 (Erigone). — 1907. 

 Kat. palåarkt. Dipt. III, 215. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 

 132. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 54 {Appendicia). 



Male. Frons above not quite as broad as the eye, rather pro- 

 truding; cheeks about half as broad as the eye, and jowls about 

 half the height of the eye. Orbits and cheeks silvery; jowls grey; 

 intermediate triangle reddish; frontal stripe dark reddish seen from 

 above, but from in front silvery. Epistoma yellowish. Frontal bristles 

 reaching below insertion of antennæ. Orbits with black hairs; jowls 

 with longer black hairs. Occiput grey, with yellowish hairs and rows 

 of black hairs behind postocular bristles, Eyes with pale hairs. Antennæ 

 black, second joint somewhat shorter than third, the latter rectangular, 

 somewhat dilated outwards; arista thickened in about basal two 

 thirds, second joint elongated. Palpi blackish, outwards somewhat 



I 



