232 Phoridae. 



Group I. 



Scutellum with four or six bristles. 



1. A. flavicoxa Zett. 



1848. Zett. Dipt. Scand. VII, 2869, 19 et 1852. XI, 4340, 19 et 1860. 

 XIV, 6476, 19 (Trineura). — 1901. Beck. Abhandl. zool. bot. Geseli. Wien I, 

 49 (Phora). — 1918. Schmitz, Jaarb. Natuurh. Genootsch. Limburg 1917, 135. 

 — Phora sexsfinosa Wood, 1908. Ent. Month. Mag. 2, XIX, 169, 216, 254. — 

 A. sexspinosa 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 132. 



Male. Frons rather broader than high, black, dull; inner bristle 

 of lower row below the outer and nearer to it than to the upper 

 supraantennal ; supraantennals equal, the upper distant, more distant 

 than the inner bristles of the middle row, the lower nearer together, 

 Antennæ somewhat large, black, arista short-pubescent. Pal pi dusky 

 yellow, of ordinary size and armature. Thorax black, a little shining, 

 with dark brownish pubescence. Scutellum with six equal bristles 

 (sometimes abnormally seven). Mesopleura bristly with one (or more) 

 long bristles. Abdomen black, dull, slightly greyish, the short hairs 

 distinctly longer at the hind margins of the segments. Hypopygium 

 of medium size, with a group of conspicuous, longish hairs below 

 on each side; subanal body very large, consisting of a black, shining, 

 complicated and somewhat hook-like appendage, the ventral plate 

 likewise large and of complicated shape; anal tube long and some- 

 what high near the apex, deep yellow, darkened at the base. Legs 

 brown, the front legs paler, brownish yellow; front tarsi somewhat 

 thickened; hind femora somewhat broad, with long hairs below the 

 basal half, longest towards the middle; bristles on hind tibiæ somewhat 

 large and numerous; also the posterodorsal bristles on middle tibiæ 

 rather distinct. Wings yellowish brown, veins brown; costa reaching 

 to the middle; 1 double or more than double 2 and longer than 2 + 3; 

 costal cilia short; fourth vein slightly curved, a little recurved at apex. 

 Halteres black. 



Female. Similar; antennæ smaller, brownish; the hairs below 

 hind femora as in the male. 



Length 2,5 — 3 mm. 



Remarks: It is curious that Becker in his table has the species 

 as independent, but in the descriptive part as a synonym under 

 riificornis, and on pag. 74 he says in the mention of Zetterstedt's 

 collection that flavicoxa is a variety of ruficornis; Collin has later on 



