Trupheoneura. 143 



third and one small at apex. Wings slightly brownish tinged; veins 

 brown; costa short, not reaching the middle, 1 nearly double 2 + 3; 



Fig. 55. Wing of T.Dudai S- 



fork short; costal cilia short; fourth vein slightly and evenly curved 

 in its whole length, seventh vein long, ending a little before the margin. 

 Halteres black. 



Female. Unknown, 



Length 1,5 mm. 



T. Diidai is rare in Denmark, only three specimens, all males, 

 are known; Ermelund ^/g 1919, Bogø south of Sealand V? 1917 and 

 at Lohals on Langeland V? 1920 (the author). 



Geographical distribution: — Besides from Denmark the species 

 is known from Holland and Germany. 



12. T. tumidula Schmitz. 



1918. Schmitz, Entom. Ber. Nederl. Ent. Vereen. V, 33. — 1918. Schmitz, 

 Jaarb. Natmirh. Genootsch. Limburg 1917, 104. 



Male. Frons low, twice as broad as high, black and dull; the 

 middle row of bristles straight, the anterior slightly convex; outer 

 bristles of both rows placed at the eye-margin. Antennæ of medium 

 size, third joint about half as large as the eye, brownish black; arista 

 pubescent. Palpi black, rather small, with ordinary bristles. Thorax 

 black or shghtly greyish black, dull, with blackish pubescence and 

 one pair of dorsocentral bristles. Scutellum with two bristles. Pleura 

 dull. Abdomen black, a little greyish, dull; second and sixth segments 

 somewhat elongated, and also first segment not short; abdomen 

 sparingly clothed with short hairs, almost only visible at the hind 

 margins of the segments and at the sides. Hypopygium not large, 

 greyish black, dull, a little shining above just at base; the arms of 

 the forceps narrow, band-shaped, a little unsymmetrical, the left 



