I 



Eriothrix. 525 



Table of Species. 



1. Male with or without upper outwards directed frontal 

 bristle; claws moderately elongated, especially on hind 

 legs; subcostal vein ending above or a little beyond medial 

 cross-vein ; first posterior cell short-petiolate ; palpi black 

 or brown 1 . rufomaculatus. 



■ — Male without upper outwards directed frontal bristle; 

 claws and pulvilli strongly elongated and only slightly 

 shorter on hind legs; subcostal vein ending considerably 

 beyond medial cross-vein; first posterior cell not petiolate; 

 palpi yellow 2. afenninus. 



1. E. rufomaculatus De G. 



1776. De G. Ins. VI, 28, 7, Tab. I, Fig. 9 {Musca). — 1895. Pand. Rev. 

 Entom. XIV, 314. — 1907. Kat. palåarkt. Dipt. III, 425. — 1921. Baer, 

 Zeitschr. f. angew. Ent. VII, 376. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 

 170, 5. — Musca alhifrons L. Halid. 1851. Stett. Ent. Zeitg. XII, 143. — 

 Musca lateralis Fabr. 1781. Spec. Ins. II, 443, 37 et 1805. Syst. Antl. 314, 8 

 (Ocyptera). — 1810. Fall. Vet. Akad. Handl. XXXI, 285, 44 et 1820. Dipt. 

 Suec. Muse. 36, nota {Tachina). — 1824. Meig. Syst. Beschr. IV, 283 [Tachina) 

 et 1838. VII, 232, 1, Tab. LXX, Fig. 45—50 {Panzeria). — 1844. Zett. Dipt. 

 Scand. III, 1188, 192 et 1859. XIII, 6143, 192 {Tachina). — 1862. Schin. F. A. I, 

 435 {Olivieria). — 1889. B. B. Denkschr. Akad. Wiss. Wien, LVI, 136, Tab. X, 

 Fig. 226 et 1891. LVIII, 385 [Olivieria). — 1898. Brauer, Sitzungsbericht. 

 Akad. Wiss. Wien, CVII, 528, 2 {Olivieria). — Ocyptera tachinaria Fall. 1820. 

 Dipt. Suec. Rhizom. 6, 4. 



Male. Frons above rather narrow, one third or a little more or 

 less of the breadth of the eye. Gheeks broad. Head silvery; jowls 

 with a red triangle; frontal stripe velvet black. The uppermost 

 frontal bristle strong, directed outwards or more forwards, but 

 often wanting. Eyes pale-hairy. Orbits with some hairs; jowls black- 

 haired. Occiput grey, with white hairs and black hairs behind post- 

 €cular bristles. Antennæ black, third joint a little longer than second; 

 arista thickened in about basal third or half, short-hairy. Palpi 

 brownish to black. Thorax black, bluish grey pruinose, with four 

 stripes, the median narrow, abbreviated, the lateral broad. Thorax 

 fmely black-haired. Abdomen black, with large red side spots; it is 

 a little whitish grey pruinose on front margin or front part of the 

 three last segments. Abdomen black-haired; second segment without 

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

 pair of discai and a row of marginal. Legs black, with long bristles; 

 claws and pulvilli elongate but not strongly, not or slightly longer 

 than fifth joint, and especially not long on hind legs. Wings more or 



