146 



NEW YORK STATE MUSEUM 



Asphondylia conspicua O. S. 



1871 Osten Sacken, R. Amer. Ent. Soc. Trans., 3:51-52 



1907 Beutemnueller, "William. Amer. Mus. Nat. Hist. Bui. 23:387 



1907 Cook, M. T. Acad. Sci. Proc. Sep., p. 6 



1908 Felt, E. P. N. Y. State Mus. Bui. 124:377 



1910 Stebbins, F. A. Springf. Mus. Nat. Hist. Bui. 2:54 



This large midge frequently attains a length of 5 or 6 mm and 

 makes a very large gall on the flower heads of Rudbeckia 

 triloba. It is closely related to A. globulus 0. S. from 

 which it is easily distinguished, according to Osten Sacken, by the 

 darker color of the hind tibiae and tarsi, though in our own series 

 we have failed to find this character of m_uch service. A more strik- 

 ing feature is the much darker mesonotum. A comparison of type 

 specimens in the Museum of Comparative Zoology at Cambridge, 

 Mass., showed that these two species are probably distinct though 

 closely related. There may be some difference in the pupal armature. 

 Our studies of material reared from a typical gall show that in A. 

 conspicua the male palpi are three-segmented, the third antennal 

 segment has a length about six times its diameter and that of the 

 female a length of seven times its diameter. There are also differ- 

 ences in the male genitalia. The gall was taken at Bath, Rens- 

 selaer county, N. Y., iVugust 16, 1907 and was received from High- 



Fig. 27 Asphondylia conspicua. Breastbone of larva, enlarged 



(original) 



spire, Pa., August 17th; adults emerged from August 24th to 30th. 

 Specimens doubtfully referred to this species were taken in a trap 

 lantern at Newport, N. Y., July 2, 1906; captured by Prof, C. 



