Aphiochaeta. 237 



but its occurrence there seems to be doubtful (Malloch, Proc. U. S. 

 Nat. Mus. 43, 1912, 451). 



4. A. campestris Wood. 



1908. Wood, Ent. Month. Mag. 2, XIX, 174, 216 {Phora). - 1914. Brues, 

 BulL Wisc. Nat. Hist. Soc. XII, 114. — 1918. Schmitz, Jaarb. Natuurh. Ge- 

 nootsch. Limburg 1917, 149. 



Male. Frons somewhat broader than high, black, dull, a little 

 greyish; it is distinctly produced forwards in the middle; inner bristle 

 of lower row a little below the outer, placed in about the middle be- 

 tween it and the upper supraantennal ; supraantennal bristles equal, 

 the upper distant, the lower approximate. Antennæ black, of medium 

 size, arista pubescent. Palpi brown or brownish, not large, with ordin- 

 ary bristles. Thorax black, somewhat shining, with dark brown 

 pubescence; at the hind margin of the disc the hairs are somewhat 

 bristly. Scutellum with four equal or nearly equal bristles. Mesopleura 

 bristly above, with one long bristle behind in front of the suture. 

 Abdomen somewhat slender, black, dull, a little greyish; it has short 

 hairs, most distinct at the hind margins of the segments and especially 

 at the sides. Hypopygium of medium size, greyish black, nearly sym- 

 metricai; it has longish hairs below on the sides among which one, 

 somewhat curved, on the left side, is specially conspicuous; anal 

 tube somewhat long, grey, yellowish towards apex; below a black, 

 shining, hook-shaped organ is more or less protruding. Legs light 

 brown to blackish brown, anterior tibiæ and tarsi, especially the front 

 ones, paler, the latter yellowish; hind femora with long hairs below 

 on the basal half; hind tibial bristles well developed, but not large. 

 Wings very slightly or a little more yellowish tinged, veins yellowish 

 brown; costa reaching to the middle, costal divisions about as 4 — 2 — 1, 

 but somewhat varying; costal cilia short; fourth vein slightly and 

 evenly curved in the whole length. Halteres black. 



Female. Quite similar to the male; frons generally less broad; 

 hind femora likewise with long hairs below the basal half. 



Length 2 — 2,7 mm. 



A. campestris is rather rare in Denmark, Ermelund (the author). 

 Bagsvær (Larsen), Holte, Geel Skov (Th. Mortensen), on Langeland 

 at Lohals (the author), at Odense (H. J. Hansen), in Jutland at Hejls 

 south of Kolding, Jelling (the author), Hald (H. J. Hansen) and 

 Løkken (Th. Mortensen); it has been taken from Ve to August; 

 in Stæger's collection an old specimen is determined as pulicaria 



