REPORT OF THE STATE ENTOMOLOGIST I918 85 



Male. Length i mm. Antennae longer than the body, sparsely- 

 haired, dark brown; fourteen segments, the fifth with stems two and 

 one-half and three and one-half times their diameters, respectively. 

 Palpi; the first segment subquadrate, slightly curved, the second 

 rather stout, suboval, the third a little more slender, the fourth a 

 little longer than the third; head black. Mesonotum dark brown. 

 Scutellum and postscutellum lighter. Abdomen yellowish brown, 

 vestiture scarcely perceptible. Wings hyaline, costa light brown; 

 halteres yellowish white. Legs light brown, paler at the articula- 

 tions; claws slender, uniformly curved. Genitalia; basal clasp seg- 

 ment long, stout; terminal clasp segment slightly swollen at the 

 base; dorsal plate broad, deeply and widely emarginate, the lobes 

 broadly rounded; ventral plate broad, broadly rounded. Type 

 Cecid. 139. 



Arthrocnodax abdominalis Felt 



191 1 Felt, E. P. Ent. News, 22:128-29 (Endaphis) 

 1914 — ^ — Econ. Ent. Jour., 7:458 



This small, yellowish midge was reared by Prof. C. H. T. Town- 

 send, Piura, Peru, from cotton leaves infested by a mite, Eriophyes. 



Arthrocnodax meridionalis Felt 



1912 Felt, E. P. Ent. News, 23:176-77 



This species was reared from Eriophyes galls on R u e 1 1 i a 

 tub'erosa collected at St Vincent, W. I. 



Arthrocnodax fraxini Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 138; separate, p. 42 

 (Cecidomyia) 



1908 • — ■ N. Y. State Mus. Bui. 124, p. 404 



The dark reddish male described below was taken June 10, 1906, 

 on ash, Fraxinus, at Albany, N. Y. 



Male. Length i mm. Antennae nearly twice the length of the 

 body, sparsely haired, light brown; fourteen segments, the fifth with 

 stems each with a length two and one-half times its diameter. Palpi; 

 the first segment subquadrate, the second one-half longer than the 

 first, the third a little shorter, the fourth one-half longer than the 

 third. Mesonotum nearly uniform dark brown, submedian lines 

 yellowish. Scutellum yellowish laterally, dark orange apically, 

 postscutellum a little darker. Abdomen dark reddish, slightly 

 lighter dorsally on the second and third abdominal segments. Wings 

 hyaline (pi. 12, fig. 11), costa dark brown; halteres yellowish trans- 

 parent. Legs nearly uniform dark brown, lighter ventrally; claws 

 rather slender, evenly curved. Genitalia; basal clasp segment long, 

 stout, at the basal angle a thickly haired lobe; tenrinal clasp seg- 

 ment slightly swollen at base, long; dorsal plate broad, broadly and 



