Lonchopteridae. 



13 



joints on front tarsi a little dilated. The legs have short black hairs, 

 front coxæ with bristles at the outer margin and apex, middle coxæ 

 at the apex; front femora with about three bristles above on the 

 apical half, middle femora with one bristle on the anterior side in 

 the middle, and hind femora with about two on the antero-dorsal 

 side; besides the femora have some bristles around the apex; the 



Fig. 2. Wing of L. lutea d- 



front tibiæ have two dorsal bristles, middle tibiæ two antero-dorsal 

 and above one postero-dorsal, and the hind tibiæ have some more or 

 less dorsal bristles and a couple of smaller ventral bristles on the 

 apical part; besides the tibiæ have some bristles at or near the apex; 

 the hind raetatarsus has a pair of bristles below at the base and one 

 small at the apex. Wings yellowish; the anal vein terminates below 



Fig. 3. Wing of L. lutea 9- 



the base of the discai fork, or a little before or behind it; the upper 

 branch of the discai fork spinuloas on a little more than the apical 

 half. Halteres yellow. 



Female. Quite similar to the male and varying in the same way. 

 Venter without bristles on second and third segments. Front legs 

 with the apical half of tibiæ and with the tarsi blackened. 



Length 2,4 to about 3 mm. 



As seen the species varies much, and the varieties have been 

 described as species. The main varieties are: 



V. lutea Meig. Thorax yellow or with a slight middle stripe; ab- 

 domen only dark at the base. 



V. flavicauda Meig. Thorax with dark middle stripe; abdomen 

 mainlv dark above. 



