Sept., I9I5-] Felt: New Asian Gall Midges. 173 



half complete lines. Body finely scaly, the dorsal thorax sparsely pubescent. 

 Axillae slightly separated. Lateral ocellus slightly separated from the eyes. 

 Two other teeth of mandibles acute. Distal joint of cephalic and caudal 

 tarsi black. 



The males are similar but the flagellum is distinctly clothed with longer 

 hairs, the pedicel is subglobular, no longer than funicle six which is slightly 

 shorter than one, the latter somewhat longer than wide, the scape and pedicel 

 concolorous, rest of antennas dusky yellowish. 



Described from two males, four females reared from a cherry- 

 leaf miner {Lithocellctis species), Wood's Holl, Massachusetts, July 

 9, 1914 (J. T. Patterson). 



Types. — Catalogue No. 19406, U. S. N. M., a pair on a tag and 

 another on a slide with heads. 



6 



NEW ASIAN GALL MIDGES. 



By E. p. Felt, 

 Albany, N. Y. 



The species described below are particularly interesting because 

 of the addition to our knowledge of zoophagous forms, some of 

 which may prove to be of considerable economic importance. A 

 study of the collections forwarded by Prof. Rutherford showed that 

 he had reared Diadiplosis coccidivora Felt from Pseudococcus species 

 on Tephrosia hookeriana, and also from the same genus on cocoanut 

 and cocoa, indicating that this species is rather common and abundant. 

 The records show the occurrence of the peculiar American genera 

 Didactylomyia and Dentifibiihta in Asia and the presence in that sec- 

 tion of the world of Arthrocnodax, a genus previously known only 

 from Europe and America. The zoophagous species have consider- 

 able in common, structurally speaking, and the wide distribution of 

 some of these highly specialized forms is certainly worthy of note. 



Didactylomyia ceylanica new species. 



The striking midges described below were taken in a bungalow 

 at light by A. Rutherford, Peradeniya, Ceylon, and forwarded under 

 date of June 8, 1914. The flagellate antennal segments are relatively 

 much less prolonged than in the type species, though in other re- 



