Trupheoneura. 



133 



4. T. intermedia Malloch. 



1908. Malloch, Ent. Month. Mag. 2, XIX, 204. - 1914. Brues, Bull. 

 Wisc. Nat. Hist. Soc. XII, 98. — 1918. Schmitz, Jaarb. Natuurh. Genootsch. 

 Limburg 1917, 100. 



Male. Frons low, aboiit three times as broad as liigh, somewhat 

 shining; bristles not weak, the anterior row slightly convex. Antennæ 

 black, third joint large; arista short-pubescent. Palpi black, large 

 and broad, witli very short brisiles along the lower margin. Thorax 

 black, somewhat shining, with black pubescence and one paii" of 

 dorsocentral bristles. Scutellum with four bristles, the anterior about 



Fig. 51. Wing of T. intermedia ^ . 



half as large as the posterior. Pleura black, somewhat rugose. Ab- 

 domen black, a little greyish, dull; first segment a little and sixth 

 distinctly elongated, the first triangularly excised in the hind margin; 

 second segment with a granulated or papillate patch on its base; 

 abdomen sparingly with short hairs, best visible at the hind margins 

 of the segments and the sides. Hypopygium large, but smaller than 

 in opaca, well chitinised; it is greyish, but black and shining above 

 at the base; with regard to the side prolongations from the tergite 

 it is similar to that in opaca^ on the right side there is at the end a 

 somewhat broad, band-shaped prolongation which is curved down- 

 wards and rounded at the end, on the left side there is more forwards 

 a prolongation which is deeply cleft and thus divided forceps-like 

 into two hook-like arms, both curved backwards, but much more 

 unequal than in opaca, the anterior is large and shining, the posterior 

 small, greyish and dull; anal tube small, not protruding; there is a 

 large, arched, black and shining ventral plate, triangularly pointed; 

 the hypopygium is a little hairy above on the apical part. Legs black 

 or blackish, the knees yellowish and also often the front tibiæ paler; 

 the legs are somewhat slender, the front tarsi a little robust; front 

 tibiæ with a small dorsal bristle above the middle, middle tibiæ with a 



