406 Phoridae. 



longer at the hind margins of the segments. Hypopygiiim somewhat 

 small, at most of medium size, greyish; when fuUy exposed it is a 

 little glossy just at the base; on each side there is a group of some 

 (4) conspicuous bristles and more backwards some smaller hairs; a 

 large subanal body seems always to be exposed; anal tube short, 

 . yellow. Legs yellow, the posterior legs may be more or less tinged 

 with brownish and hind femora brownish at the end; the hairs below 

 the basal half of hind femora longish and not sparse; bristles on hind 

 tibiæ fine, but not quite short. Wings brownish yellow or brownish 

 tinged, veins brown and somewhat strong; costa about 0,42 of the 

 wing-length, costal divisions about as 11 — 4 — 2; third vein rather 

 thick, fork short and the outer branch a little angulated; costal cilia 

 long, but rather moderately; fourth vein evenly and only slightly 

 curved, beginning just below the base of the fork, slightly S-like at 

 the base and not or not distinctly recurved at the end. Halteres black 

 or brownish black. 



Female. Similar; antennæ brown and the hairs below the hind 

 femora not so long as in the male; the pale hind margins on abdomen 

 broader and more distinct; halteres paler to brown. 



Length 1,5 — 1,8 mm. 



This species belongs to the halterata-group, but it will be known 

 from halterata, besides by the dark halteres, by the hypopygium and 

 the longer costa, from plurispinosa by the dark halteres, and from 

 fuscohalterata by the relatively longer first costal division. 



A. coacta is not common in Denmark, but has been taken in 

 several localities; Bogø south of Sealand, at Lohals on Langeland, 

 and in Jutland at Jelling and Ry (the author); the dates are ^V? — ^7? 

 in 1917 to 1921; in all 7 males and 3 females. 



Geographical distribution: — Hitherto only known from Den- 

 mark. 



143. A. erecta Wood. 



1910. Wood, Ent. Month. Mag. 2, XXI, 196, 202 (Phora). — 1914. Brues, 

 Bull. Wisc. Nat. Hist. Soc. XII, 117. — 1919 Schmitz, Entom. Ber. Nederl. 

 Ent. Ver. V, 142. 



Male. Frons broader than high, black, slightly shining; inner 

 bristle of lower row a little below the outer and nearer to it than to 

 the upper supraantennal ; supraantennal bristles unequal, the lower 

 small; the upper supraantennals approximate, about as distant as 

 the inner bristles of middle row, the lower close to the upper and more 



