Aphiochaeta. 



283 



This species shows a curious resemblance to a species in the group 

 with foiir scutellar bristles, viz projecta; both species show in the male 

 dark, large, slightly bristled palpi, in the female they are smaller, 

 yellow and normally bristled; both have front metatarsi dilated, and 

 the wings are very similar; of course the species cannot be confused, 

 as one has four the other two scutellar bristles. 



A. obscuripennis does not seem to be rare in Denmark; Copen- 

 hagen, Holte, Geel Skov, Bogø south of Sealand, and in Jutland at 

 Hejls south of Kolding (Th. Mortensen, the author); the dates are 

 ^Ve— ^Vio in 1917 to 1920; I have taken it in copula on Vs. 



Geographical distribution: — Besides in Denmark known from 

 England, and, according to a specimen sent from Pater Schmitz, 

 in Holland. 



42. A. conformis Wood. 



1909. Wood, Ent. Month. Mag. 2, XX, 113, 143 (Phora). - 1914. Brues, 

 Bull. Wisc. Nat. Hist. Soc. XII, 115. — A. carpalis Schmitz, 1919. Entom. Ber. 

 Nederl. Ent. Ver. V, 112. 



Male. Frons considerably broader than high, black, 

 a little greyish, dull; inner bristle of lower row nearly in 

 the same height as the outer and in the middle between 

 it and the upper supraantennal ; supraantennal bristles 

 a little unequal, the upper about as distant as the inner 

 bristles of middle row, the lower only slightly more ap- 

 proximate. Antennæ black, a little above ordinary size, 

 arista short-pubescent. Palpi black, of ordinary size and 

 armature. Thorax black, somewhat shining, with brown- 

 ish pubescence. Mesopleura bristly, the bristles uniform, 

 weak, almost only forming a single row along the hind 

 margin. Abdomen black, dull, short hairs are visible at 

 the hind margins of the segments, a little longer at the 

 hind corners, on sixth segment they are slightly longer. 

 Hypopygium somewhat small ; on the sides there are four 

 or five bristles in an obliquely vertical row; a short 

 ventral plate is sometimes seen; anal tube not large, 

 dark brownish with paler apex. Legs black or brownish tarsus x 65. 

 black, the front legs, especially the tibiæ sometimes paler, 

 but the front tarsi blackish; front metatarsi conspicuously thickened 

 somewhat oval, at the middle broader than the end of tibiæ (fig. 89); 

 hind femora with the hairs below the basal half of some length; 



Fig. 89. 



A. conformis 



o, front 



