328 Tachinidae. 



67. Bavapia B. B. 



Species of medium or smallish size, somewhat similar to the 

 species of Nemorilla, but differing on some points. Head a little 

 broader than thorax. Frons broad, broadest in female, rather strongly 

 protruding, and hence the epistoma retreating. Cheeks and jowls 

 broad, the latter fuUy half as broad as the eye is high. In both sexes 

 ocellar and inner and outer vertical bristles, in female two orbitals. 

 Behind postocular bristles black liairs. Frontal bristles descending 

 to end of second antennal joint, two upper reclinate in both sexes. 

 Cheeks bare. Vibrissal ridges strongly raised; vibrissæ ascending 

 to about middle. Antennæ inserted well above middle of the eye, 

 third joint long, about six times the short second, less in female, 

 reaching end of epistoma; arista with second joint very slightly 

 elongated. Thorax quadratic; three postsutural dorsocentrals, and 

 three præ- and three postsutural acrostichals; a præsutural intraalar 

 bristle. Scutellum with three marginal bristles on each side, the median 

 pair strong; no crossing apicals; a pair of erect discai bristles before 

 apex. Three sternopleural bristles. Abdomen somewhat conical, with 

 discai and marginal bristles, on second segment a pair of marginal. 

 Genitalia small. Legs as in Nemorilla; the anterodorsal row of bristles 

 on hind tibiæ with the bristles not dense and very unequal; claws 

 and pulvilli in male a little elongated. Wings as in Nemorilla, but 

 with a visible costal spine. 



Only one species is known, also accurring in Denmark. It has 

 been bred from Stilpnotia salicis. — In Kat. palåarkt. Dipt. the 

 genus is given as a subgenus of Nemorilla, but it seems to me suffi- 

 ciently characteristic to range as a genus. 



1. B. jucunda Meig. 



1838. Meig. Syst. Beschr. VII, 259, 50 {Exorista). — 1862. Schin. F. A. I, 

 466 {Exorista). — 1900. Villen. Bull. Soc. Ent. de Fr. 160, 24 et 1907. Wien. 

 Ent. Zeitg. XXVI, 247, 1 {Exorista). - 1907. Kat. palåarkt. Dipt. III, 237 

 {Carcelia). — 1924. Stein, Arch. f. Naturgesch. 90, 6, 85. — B. mirabilis B. B. 

 1889. Denkschr. Akad. Wiss. Wien, LVI^ 164, Tab. II, Fig. 19. -— 1907. Kat. 

 ]3alåarkt. Dipt. III, 259 {Nemorilla). — 1921. Baer, Zeitschr. f. angew. Ent. 

 VII, 149 {Nemorilla). — Exorista extorris Pand. 1896. Rev. Entom. XV, 11, 

 11. — 1907. Villen. Ann. Soc. Ent. de Fr. LXXVI, 385. 



Male. Frons above as broad as the eye. Orbits and cheeks 

 silvery, the former darker upwards; jowls grey; frontal stripe brownish 

 red, seen from in front silvery. The large vibrissa strong. Orbits and 



