Aphiochaeta. 375 



118. A. rufipes Meig. 



1804. Meig. Klass. eur. zweifl. Ins. I, 313, 3, Taf. XV, Fig. 23 {Trineura). 

 — 1805. Fabr. Syst. Antl. 336, 1 (Trineura). — 1830. Meig. Syst. Beschr. VI, 

 216, 15 (Phora). — 1838. Zett. Ins. Lapp. 795, 3 {Trineura). — 1848. Zett. 

 Dipt. Scand. VII, 2857, 6 {Trineura). — 1864. Schin. F. A. II, 340 {Phora). — 

 1901. Beck. Abhandl. zool. bot. Gesell. Wien, I, 59, 52 {Phora). — 1909. Wood, 

 Ent. Month. Mag. 2, XX, 194, 243 (Phora). — 1910. Kertész, Cat. Dipt. VII, 

 413. — 1914. Brues, BulL Wisc. Nat. Hist. Soc. XII, 130. — Trineura annu- 

 lata Meig. 1804. Klass. eur. zweifl. Ins. I, 314, 4 et 1830. Syst. Beschr. VI, 216, 

 14 (Phora). — Phora palUpes Latr. 1809. Hist. Nat. Crust. Ins. XIV, 395, 2, 

 tab. CX, fig. 8. — Trineura vulgaris Fall. 1823. Dipt. Suec. Phytom. 6, 5, p. p. 



Male. Frons considerably broader than high, nearly twice as 

 broad, black, slightly greyish, dull; bristles strong, inner bristle of 

 lower row in, or nearly in the same height as the outer and a little 

 nearer to it than to the iipper supraantennal; supraantennal bristles 

 equal, the upper more approximate than the inner bristles of middle 

 row, the lower a little more approximate and rather close to the upper. 

 Antennæ of ordinary size, black, arista long, distinctly pubescent. 

 Palpi yellow, of ordinary size, with well developed bristles. Thorax 

 black, slightly shining, sometimes with a sliglit brownish tint; it has 

 a short, brownish or brownish black pubescence. Mesopleura bare. 

 Abdomen somewhat long and relatively slender, greyish black, dull; 

 the short hairs are well visible and very slightly longer at the hind 

 margins of the segments; the sides of abdomen are clothed with 

 curious, long hairs or bristles which are blunt-ended or with the point 

 rather stubby; they are wanting along the middle of dorsum and 

 short at the sides of first segment. The hypopygium is small, higher 

 than long and prolonged downwards or backwards into a short pro- 

 jection; when fully exposed, it is seen to have on the sides below a 

 number of hairs similar to those on abdomen, but smaller, and be- 

 sides there are quite small hairs on the apical projections; but generally 

 the hypopygium is withdrawn so that the hairs are not seen; below 

 there is a medium-sized, somewhat square-shaped ventral plate with 

 the end rounded; anal tube of medium size, yellowish or dusky. Legs 

 yellowish brown to dark reddish brown, hind femora sometimes a 

 little darkened at tip; the hairs below the basal half of hind femora 

 a little longish; hind tibial bristles distinct, but small and hair-like. 

 Wings yellowish or brownish yellow tinged, sometimes more clear; 

 veins brown or dark brown and strong; costa reaching to the middle 

 or being shorter (down to 0,46), 1 about double 2 and distinctly longer 

 than 2+3; costal cilia very long; angle at fork not large; fourth 



