396 Tachinidae. 



1. B. goniaeformis Meig. 



1824. Meig. Syst. Besclir. IV, 416, 307 (Tachina) et 1838. VII, 251, 1, 

 Tab. LXXI, Fig. 41—45. — 1844. Zett. Dipt. Scand. III, 1051 et 1858. XII, 

 4692, 43-^4 (Tachina). — 1862. Schin. F. A. I, 495. — 1889. B. B. Denkschr. 

 Akad. Wiss. Wien, LVI, 107, Tab. V, Fig. 105. — 1896. Pand. Eev. Entom. 

 XV, 122, 5 (Erynnia). — 1907. Kat. palåarkt. Dipt. III, 358. — 1921. Baer, 

 Zeitschr. f. angew. Ent. VII, 361. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 116. 



Male. Frons above double as broad as tlie eye, slightly declining, 

 but much protruding; cheeks ve ry broad, somewhat swoln; jowls 

 fully half as broad as the height of the eye. Orbits and cheeks white, 

 silvery, the former a little greyish; jowls greyish white, intermediate 

 triangle red in some views. Frontal stripe velvet brown, seen from 

 in front silvery. Orbits and cheeks with longish fine black hairs; 

 jowls with stronger hairs, Occiput grey, with whitish yellow hairs, 

 and some few black hairs behind the postocular bristles. Antennæ 

 black, second joint a little reddish; arista thickened in nearly whole 

 length. Palpi brownish yellow. Thorax black, greyish pruinose, 

 with four somewhat broad black stripes, the median more or less 

 confluent to one broad stripe; scutellum with apical part red. Thorax 

 with short and fine black hairs. Abdomen black, somewhat shining, 

 the segments with somewhat narrow, not very pronounced greyish 

 white front bands, shifting with dark according to view, broadest 

 on second segment. Abdomen black-haired, second segment with 

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

 fourth with a pair of discai and a row of marginal bristles. Legs 

 black. Wings brownish tinged, especially towards base; veins brown. 

 Squamulæ whitish. Halteres brownish. 



Female. I do not know the female; according to the description.s 

 it is similar to the male, but third antennal joint considerably 

 shorter. 



Length. About 11 mm. 



B. goniaeformis is very rare in Denmark, I know only one spec- 

 imen, a male, taken at Nykøbing in North Sealand on ^/g 1869 

 (Schlick). The species is known as bred from Eriogaster lanestris, 

 Cucullia scrophulariae and the non Danish Satiirnia pyri. 



Geographical distribution: — Europe; towards the north to 

 Southern Sweden. 



