Aphiochaeta. 249 



side abdomen has longish hairs at the hind margins of third, fourth 

 and fifth segments; the hairs below the basal half of hind femora 

 shorter than in the male; the arrangement of the hind tibial bristles 

 described above is generally well pronounced in the female. 



Length. About 2 to fully 3 mm. 



A. latifemorata I have only taken in Ermelund and Dyrehaven, 

 but here it is common; my dates are ^^U — ^^/e it is thus an early 

 species; I have taken it in copula on ^Vs, ^Vs and ^"/e- My specimens 

 are taken from 1918 to 1921, but, as mentioned above under the 

 genus, a specimen stands in Stæger's collection under ciliata^ labelled 

 "Zett. det." 



Geographical distribution : — Northern and middle Europe down 

 into Hungaria; towards the north into Sweden (Becker). 



15. A. ruficornis Meig. 



1830. Meig. Syst. Beschr. VI, 218, 21 {Phora). — 1848. Zett. Dipt. 

 Scand. VII, 2863, 12, p. p. specimen danicum exclusum (Trmeura). — 1901. 

 Beck. Abhandl. zool. bot. Geseli. Wien, I, 57, 49 (Phora). - 1908. Wood, Ent. 

 Month. Mag. 2, XIX, 171 et 1912. 2, XXIII, 98 (Phora). - 1910. Kertész, 

 Cat. Dipt. VII, 413. - 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 130. - 

 1918. Schmitz, Jaarb. Natuurh. Genootsch. Limburg 1917, 141. 



Male. This species is very like latifemorata, but paler and distin- 

 guished by some other characters. Frons as in latifemorata, but gener- 

 ally more grey, sometimes reddish anteriorly; supraantennal bristles 



Fig. 80. Wing of A. ruficornis ^ . 



very approximate. Antennæ yellow to brown, arista fully as long as 

 in latifemorata. Palpi yellow or pale yellow. Thorax variable, reddish 

 yellow to brown or blackish with reddish margins, or almost quite 

 blackish; as in latifemorata there is, besides the dorsocentral bristles, 

 an intraalar bristle inwards to the postalar bristle. Scutellum with 

 four equal bristles. Pleura more or less yellowish or brownish to darker. 

 Abdomen black, a little greyish, haired as in latifemorata and likewise 



