248 Tachinidae. 



long bristles; hind tibiæ thin at base, then suddenly thickened 

 ventrally. Wings somewhat brownish tinged, most at base; veins 

 brown; first posterior cell open, ending at about apex of wing; cubital 

 vein with not small bristles, stretching half way to medial cross-vein 

 or longer. Squamulæ yellowish white, with the margin yellow. Bal- 

 teres with the knob blackish. 



Female. Similar; frons about as broad as the eye; cheeks less 

 densely hairy. Eyes short-pubescent. Second abdominal segment 

 with the row of bristles less complete or only a pair. 



Length. About 5 — 6,5 mm. 



M. chalybeata is not rare in Denmark; at Copenhagen, Utterslev 

 Mose, Ordrup Mose, Lundtofte, Dyrehaven, Nyrup Hegn, Humle- 

 bæk, Svenstrup, Allindelille; on Langeland at Lohals; on Lolland 

 at Bremersvold, in Kældskov, at Strandly; on Fænø; on Funen at 

 Odense, and in Jutland at Sønderborg and Madeskov; fmally on 

 Bornholm (Stein); the dates are ^/^ — ^^j^. The species is known as 

 bred from Cassida deflorata. 



Geographical distribution: — Europe; towards the north to 

 middle Sweden and in Finland. 



2. M. nigrita Fall. 



1810. Fall. Vet. Acad. Handl. XXXI, 269 et 1820. Dipt. Suec. Muse. 

 35, 72 {Tachina). — 1824. Meig. Syst. Beschr. IV, 274, 62 {Tachina) et 1838. 

 VII, 230, 16 {Macquartia). — 1844. Zett. Dipt. Scand. III, 1183, 186 et 1855. 

 XII, 4702, 186 et 1859. XIII, 6141, 186 (Tachina). — 1862. Schin. F. A. I, 

 532 (Macquartia). — 1889. B. B. Denkschr. Akad. Wiss. Wien, LVI, 130, 

 Tab. IX, Fig. 224 (Ptilops). — 1895. Pand. Rev. Entom. XIV, 322, 5 (Mac- 

 quartia). — 1900. Stein, Ent. Nachricht. XXVI, 144. — 1907. Villen. Ann. 

 Soc. Ent. de Fr. LXXVI, 383 et 1907. Wien. Ent. Zeitg. XXVI, 257, 61 (Pti- 

 lops). — 1907. Kat. palåarkt. Dipt. III, 409. — 1924. Stein, Arch. f. Natur- 

 gesch. 90, 6, 158, 2 (Ptilops). — Macquartia corinna Meig. 1838. 1. c. VII, 230, 

 17. — Tachina nitidiuscula Zett. 1859. 1. c. XIII, 6129. 



Male. This species is highly similar to chalybeata-, the frons is 

 still narrower, the orbits touching or quite nearly so. The head a 

 little lower; the bordering line between the large and small eye- 

 facets distinct. Antennal arista thickened only at base. Otherwise 

 head, thorax and abdomen as in chalybeata, but second abdominal 

 segment with only a pair of bristles. Wings with first posterior cell 

 more narrowly open or just closed; cubital vein with only few and 

 small bristles at base, at all events not reaching half way to medial 

 cross-vein. 



