58 Annals Entomological Society of America [Vol. IV, 



ity of the galls produced by this genus are of the apparently 

 fungous-affected blister type. The highly specialized Clinor- 

 hyncha Loew is represented in America by several species 

 probably restricted to the florets of Yarrow, Thoroughwort 

 and presumably Chrysanthemum. The peculiar Campto- 

 neuromyia adhesa Felt has been reared from oval, adherent 

 galls between Solidago leaves, while C. rubifolia Felt was- 

 obtained from a marginal leaf roll on blackberry. 



The tribe Asphondyliariae is a rather highly specialized 

 group, the species living mostly in buds. This is particularly 

 true of Asphondylia H. Lw., a genus practically confined to 

 buds and apparently not closely restricted in food habits, 

 since different species have been reared from a considerable 

 variety of plants. Schizomyia Kieff. is allied to the preceding 

 genus and the several species reared were obtained from buds; 

 such as S. coryloides Walsh and Riley from an apical leaf bud 

 gall on grape, and S. pomum Walsh and Riley from a nutlike 

 polythalamous grape gall, evidently a modified bud. S. rivinae 

 Felt was reared from bud galls on Rivina. Cincticornia Felt 

 appears to be restricted to leaf galls on Quercus, the largest and 

 perhaps most characteristic being that produced by C. pilulae 

 Walsh. A series of rearings have resulted in obtaining a number 

 of species, all from various leaf galls on this plant genus. 



The tribe Itonidinariae comprises a large assemblage of 

 highly specialized forms, easily divided by the circumfili into 

 two groups, namely the bifili and trifili. The former is repre- 

 sented by Endaphis Kieff. first recorded as an .endoparasite 

 on Aphididae and reared by us from mite infested foliage. 

 Contarinia Rond. also belongs in this subtribe and, as is well 

 known, displays a marked preference for bud and fruit structures, 



C. johnsoni Sling., C. virginianeae Felt, C. rumicis H. Lw., C. sor- 

 ghicola Coq. and C. pyrivora Riley, all being representative in 

 food habit. Thecodiplosis Kieff. is closely allied to the preceding 

 and is represented in America by T. quercifolia Felt reared from 

 oak, T. ananassi Riley reared from a twig gall on Taxodium, 

 and T. liriodenri O. S., inhabiting a blister gall on tulip leaves. 

 Dentifibula Felt, also in this subtribe, has at least one species, 



D. cocci Felt, which is zoophagous. 



