Aphiochaeta. 343 



Geographical distribution: — Besides in Denmark occurring and 

 common in England and Holland. 



93. A. minor Zett. 



1848. Zett. Dipt. Scand. VII, 2864, 13 et 1855. XII, 4824, 13 {Trineum). 

 — 1901. Beck. Abhandl. zool. bot. Geseli. Wien, I, 63, 57 {Phora). — 1909. 

 Wood, Ent. Month, Mag. 2, XX, 28, 62 et 1912, 2, XXIII, 167 {Phora). - 1910. 

 Kertész, Gat. Dipt. VII, 409. - 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 

 124. — 1919. Schmitz, Jaarb. Natuurh. Genootsch. Limburg 1918, 158. — 

 ? Phora 7iitidifrons Strobl, 1892. Wien. Ent. Zeitg. IX, 200 et 1894. Mittheil. 

 Ver. Steierm. XXX, 16 et 1899. Wien. Ent. Zeitg. XVIII, 148 et 1910. Mittheil. 

 Ver. Steierm. XL VI, 122. 



Male. Frons high, higher than broad, or sometimes lower, about 

 quadratic, black and more or less shining; bristles not strong, inner 

 bristle of lower row considerably below the outer and somewhat near 

 the eye-margin, but the position of these bristles somewhat varying; 

 supraantennal bristles equal, the upper very distant, much more 

 distant than the inner bristles of middle row, the lower more approx- 

 imate, but still rather distant. Antennæ somewhat small, black, 

 arista quite short-pubescent. Palpi variable in colour, blackish to 

 yellow, somewhat prominent and with rather long bristles. Thorax 

 black, shining, with blackish or brownish pubescence. Mesopleura 

 bare. Abdomen black, very slightly greyish, fifth and sixth segments 

 generally more or less shining; the hairs very short, only a little longer 

 towards the end and at the sides and longest at the hind margin of 

 sixth segment; at the sides of second segment they are rather con- 

 spicuous. Hypopygium somewhat small, greyish; it has short hairs 

 at the lower corners and a longer hair below at the base; anal tube 

 short, but somewhat high, yellow, dusky at the base. Legs somewhat 

 varying in colour from black or blackish to yellowish, the front legs 

 generally paler and the front coxæ always yellow; hind femora rather 

 dilated, the hairs below the basal half distinct and somewhat long; 

 bristles on hind tibiæ strong and also on middle tibiæ the postero- 

 dorsal bristles on the upper half distinct. Wings greyish yellow to 

 strongly brownish, veins brown ; costa not quite reaching to the middle, 

 1 nearly equal to 2 + 3, but it varies and may be both shorter or 

 longer; costal cilia short and fme; fourth vein somewhat curved in 

 its first part. Halteres whitish yellow. 



Female. Similar to the male, only the costa longer. 



Length 1,3 — 2 mm. 



A. minor is somewhat rare in Denmark; Geel Skov, Hillerød, 



