258 Phoridae. 



22. A. rata Wood. 



1908. Wood, Ent. Month. Mag. 2, XIX, 172 et 1912. 2, XXIII, 98 (Phora). 

 — 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 129. — 1918. Schmitz, Jaarb. 

 Natuurh. Genootsch. Limburg 1917, 146. 



Male. Frons generally qiiadratic, but varying and sometimes 

 broader; it is grey, dull; bristles strong, inner bristle of lower row 

 below the outer and generally nearer the iipper supraantennal than 

 the outer bristle; supraantennal bristles small and unequal, the lower 

 quite small, they are approximate, the lower the most. Antennæ 

 brownish black or brown, of usual size, arista of medium length but 

 a little variable, very short-pubescent. Palpi yellow, small and with 

 quite short bristles. Thorax greyish black, very slightly shining, 

 with greyish brown to dark brown pubescence. Scutellum with four 

 unequal bristles, the anterior much smaller than the posterior and most 

 often only present as small hairs. Mesopleura bare. Abdomen black, 

 distinctly greyish, dull; it has very short hairs, most visible at the 

 sides, and at the side margins of second segment they are a little longer, 

 sometimes rather conspicuous; at the hind margin of sixth segment 

 the hairs are also a little longer. Hypopygium of medium size or a 

 little over, somewhat knob-like, it is greyish, hairy below on the 

 sides; it is not quite symmetricai, the side prolongation reaching 

 further down on the right than on the left side; anal tube somewhat 

 large, yellow, brownish at the base; there is a flap-like, dusky yellowish 

 ventral plate, unsymmetrically placed and reaching to or beyond 

 the end of hypopygium. Legs yellowish to dark brown, the posterior 

 legs the darker; hind femora somewhat dilated, with long hairs below 

 the basal half; hind tibiæ above the middle with hairs or very small 

 bristles, below with six to seven bristles which may be more or less 

 strong; the dorsal hair-seam curved somewhat anteriorly in the 

 lower half. Wings a little yellowish tinged, veins brown; costa gener- 

 ally not quite to the middle, but sometimes reaching it, 1 somewhat 

 longer than 2 + 3; costal cilia long, but varying in length; fourth 

 vein curved in the basal part, for the rest slightly curved or nearly 

 straight. H alteres yellow. 



Female. Similar to the male; palpi of normal size and armature; 

 scutellar bristles unequal, but the anterior always present as bristles; 

 abdomen sometimes with pale hind margins to the segments, and 

 sometimes the hairs on the sides of second segment more developed 

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

 basal half. 



