430 Phoridae. 



Of the foiir European species three have hitherto been foimcl 

 in Denmark. 



Table of species. 



1. Costa just before the apex of the first vein with a tri- 

 angular swelling, projecting down into the costal cell; 

 female abdomen without tergal piates on fourth and 



fifth segments 1 . arcuata. 



■ — Costa without such a swelling; female abdomen without 

 tergal piates either only on third or on third, fourth and 

 fifth segments 2. 



2. First, second and third veins not ending quite near to 

 each others, the enclosed cells broader than the veins; 

 fourth vein curved somewhat strongly upwards at apex; 

 female abdomen without tergal plate only on fourth 



segment 2. quartomollis. 



■ — First, second and third veins ending quite near to each 

 others, the enclosed cells not broader than the veins; 

 fourth vein evenly curved; female abdomen without 

 tergal piates on third, fourth and fifth segments 3. fuliginosa. 



1. G. arcuata Meig. 



1830. Meig. Syst. Beschr. VI, 222, 23, p. p. (Phora). — 1835. Macq. Suit. 

 å Buff. II, 631, 1, tab. XXIV, fig. 5, p. p. — 1848. Zett. Dipt. Scand. VII, 

 2854, 1, p. p. ^ 1864. Schin. F. A. II, 346, p. p. — 1901. Beck. Abhandl. zool. 

 bot. Gesell. Wien, I, 82, 71, p. p. — 1910. Kertész, Cat. Dipt. VII, 416, p. p. 

 — 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 138, p. p. — 1918. Schmitz, 

 Jaarb. Natuurh. Genootsch. Limburg 1917, 124, p. p. et 1920. 1. c. 1919. 132, 

 Fig. 10. — Trineura rufipes Fall. (nec Meig.) 1823. Dipt. Suec. Phytom. 5, 1, p. p. 



Male. Frons black, greyish pruinose, dull; small outer bristles 

 of second row present (generally). Antennæ black or blackish brown. 

 Palpi yellowish brown to black. Thorax black or a little brownish 

 black, somewhat shining, præalar cailus more or less reddish; the 

 two impressed longitudinal furrows are, seen in a certain direction, 

 grey or almost whitish grey, sometimes translucently brownish; also 

 the flat area behind is pruinose. Scutellum with four bristles (according 

 to Schmitz very rarely six). Abdomen greyish black, dull. Hypopy- 

 gium when exposed yellow or brownish, shining; anal tube yellow, 

 distinct and of some length, with longish hairs. Legs yellow or yellowish 

 brown. Wings strongly brownish tinged, veins brown or blackish 

 brown; costa reaching to or beyond the middle, it increases in thick- 

 ness from the base outwards, and it has just before the apex of first 

 vein a somewhat triangular swelling with the top pointing downwards, 



