REPORT OF THE STATE ENTOMOLOGIST I913 203 



bbbb Abdomen dark yellowish fuscous, basal enlargement of fifth anten- 

 nal segment with a length twice its diameter, the ventral plate 

 roundly emarginate, the dorsal plate long, broad and roundly 



emarginate cerasi Felt, C. 343 



bbbbb Abdomen pale brown, the basal enlargement of the fifth antennal 

 segment with a length three times its diameter, the ventral plate 



slightly emarginate, the dorsal plate triangularly emarginate 



h i s p i d a Felt, C. 519 

 aa Stem of fifth antennal segment as long as the basal enlargement 



b Abdomen yellowish brown, the basal enlargement of the fifth anten- 

 nal segment with a length twice its diameter, the ventral plate 



broadly emarginate v i t i s Felt, C. aii65a 



bb Abdomen reddish yellow, tibiae and tarsi dark brown, the basal 

 enlargement of the fifth antennal segment with a length two and 

 one-half times its diameter, the ventral plate roundly and the 



dorsal plate triangularly emarginate 



absobrina Felt, C. ai555x 



Females 



a Abdomen pale yellowish, fifth antennal segment with a length about 

 three times its diameter, the lobes of the ovipositor broadly rounded 



apically. absobrina Felt, C. ai555x, ai5i8, ai579 



aa Abdomen reddish yellow, the fifth antennal segment with a length three 



times its diameter, the lobes of the ovipositor subtriangular 



hirta Felt, C. ai576a 



aaa Abdomen light fuscous yellowish, fifth antennal segment with a length 



about two and one-half times its diameter, with the lobes of the 



ovipositor broadly ovate vitis Felt, C. aii6sa, ai568b 



Rhizomyia fraxinifolia Felt 



1907 Felt, E. P. New species Cecidomyiidae II, p. 8 (Arnoldia) 



1908 N. Y. State Mus. Bui. 124, p. 289, 384 (Arnoldia) 



This light yellowish species was reared July 25, 1907 from a jar 

 containing leaves of ash, Fraxinus, badly rolled by small, whitish 

 larvae and collected by Mr L, H. Joutel at Newfoundland, N. J. 



Male. Length 1 mm. Antennae as long as the body, sparsely 

 haired, dark brown, yellowish basally; 12 segments, the fifth with 

 a stem as long as the basal enlargement, which latter has a length 

 nearly twice its diameter. Palpi ; the first segment subquadrate, the 

 second more than twice the length of the first, more slender, the 

 third a little longer and more slender than the second. Face fus- 

 cous yellowish. Mesonotum light brown, the submedian lines in- 

 distinct. Scutellum, postscutellum and abdomen a nearly uniform 

 light yellowish or yellowish orange, the last sparsely fuscous haired 

 dorsally. Genitalia light fuscous. Wings hyaline, costa dark 

 brown. Halteres yellowish basally, light fuscous apically. Coxae 



