348 Phoridae. 



Female. Similar; antennæ a little smaller; frons scarcely as broad 

 as in the male; hind femora as in the male with long hairs below. 



Length 1,5 to about 2 mm. 



A. iiliginosa seems to be rare in Denmark, I possess only one 

 male and one female, Geel Skov ^V9 1918 and at Hejls south of Kol- 

 ding ^7 1919 (the author). 



Geographical distribution: — Besides in Denmark occurring in 

 England and Holland, and probably also in Germany (Schmitz, 

 Tijdschr. v. Entom. LXIV, 1921, 8). 



97. A. flava Fall. 



1823. Fall. Dipt. Suec. Phytom. 7, 8 {Trineura). — 1838. Zett. Ins. Lapp. 

 797, 10 et 1848. Dipt. Scand. VII, 2876, 25 {Trineura). — 1864. Schin. F. A. II, 

 343 {Phora). - 1901. Beck. Abhandl. zool. bot. Geseli. Wien, I, 54, 44, Taf. III, 

 Fig. 52 {PJiora). — 1909. Wood, Ent. Month. Mag. 2, XX, 28, 63 {Pliora). — 

 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 119. — 1919. Schmitz, Jaarb. 

 Natuurh. Genootsch. Limbiirg 1918, 61. 



Male. Frons broader than high, grey, dull, sometimes the anterior 

 margin indistinctly reddish; inner bristle of lower row in the same 

 height as the oiiter and a little nearer to it than to the upper supra- 

 antennal; siipraantennal bristles unequal, the lower about half the 

 size of the upper; the upper supraantennals about as distant as the 

 inner bristles of middle row, the lower a little more approximate. 

 Antennæ of ordinary size, yellow or pale yellow, sometimes red, 

 arista distinctly pubescent. Palpi yellow, of ordinary size and armature. 

 Thorax from pale yellow or reddish yellow to dark brown, dull or 

 dullish, with dark brown pubescence. Pleura yellow to brownish, 

 when yellow with a dark spot below the wing-root. Mesopleura bare. 

 Abdomen varying from almost quite yellow to quite black, when 

 yellow the middle segments are more or less dark, and often it is 

 black with first, second and sixth segments yellow, or with only the 

 latter yellow, and also the hind margins are often pale; it is dull; 

 the short hairs are a little longer at the hind margins of the segments, 

 especially at the sides, and they increase in length towards the end; 

 at the sides of second segment they are specially distinct; venter 

 yellow. Hypopygium rather large and knob-like, greyish or brownish 

 black ; it is hairy on the sides with short hairs ; below there is a some- 

 what large, greyish ventral plate, which is deeply cleft and furcated, 

 but not always in view; anal tube of medium size, yellow, with very 



