Aphiochaeta. 239 



6. A. communiformis Schmitz. 

 1918. Schmitz, Jaaib. Natuurh. Genootsch. Limburg 1917, 139, 149. 



Male. Frons slightly broader than high, nearly quadratic, greyish 

 black, slightly shining; inner bristle of Iower row a little below the 

 outer and a little nearer to it than to the upper supraantennal ; Iower 

 supraantennals slightly smaller than the upper, tliese latter about 

 in alignement with the inner bristles of middle row, the Iower supra- 

 antennals more approximate. Antennæ somewhat small, brownish 

 black, arista short-pubescent. Palpi brown, not long, but broad, the 

 Iower margin strongly curved or the palpi almost triangular; on the 

 apical half of the Iower margin five long bristles, behind these two 

 short. Thorax black, very slightly shining, with brownish black 

 pubescence. Scutellum with four bristles, the anterior a little smaller 

 than the posterior. Mesopleura bristly, bristles uniform. Abdomen black, 

 a little greyish, dull, with short hairs. Hypopygium small and with- 

 drawn; anal tube of medium length, greyish brown, palest towards 

 the end, the two hairs at apex small. Legs blackish brown, trochanters 

 and knees yellowish, posterior tibiæ and tarsi brownish, front tibiæ 

 and tarsi yellowish; hind femora with short hairs below, which are 

 dense on the basal part; hind tibial bristles distinct, those on the 

 middle the longest. Wings a little yellowish, sometimes more, veins 

 yellow or brownish yellow; costa reaching to the middle, costal 

 divisions about as 13 — 10 — 4; costal cilia moderately short, nearly 

 midway between short and long, angle at fork somewhat acute ; fourth 

 vein slightly curved in its first part, for the rest nearly straight. Hal- 

 teres black. 



Female. In all respects similar to the male, also the balteres 

 blackish; only the anterior scutellar bristles a little smaller. 



Length 1,6 — 2 mm. 



This species will, I think, best be distinguished by its broad 

 palpi; my determination is certain as Schmitz has examined both 

 sexes of my species. 



A. communiformis is not common in Denmark; in a churchyard 

 at Copenhagen, Ermelund (the author), Holte (Th. Mortensen), in 

 all two males and five females; the dates are Vs — ^"/e in 1918 — 1920; 

 it was taken in copula on ^"/e. 



Geographical distribution: — Besides in Denmark the species 

 occurs in Holland. 



