2l8 NEW YORK STATE MUSEUM 



sile, flagellate segments of the female are cylindric, subsessile, with 

 a length twice the diameter and with an irregular subbasal whorl. 

 Ovipositor probably one-half the length of the body, stout; the 

 lobes are narrowly lanceolate, setose and twice as long as broad. 



Key to species 



a 12 antennal segments 



b Abdomen light brown, the dorsal plate triangularly emarginate; male 



t i 1 i a c e a Felt, C. 83 

 bb Abdomen fuscous yellowish, the dorsal plate deeply and broadly emarginate; 



male brevicornis Felt, C. 281 



bbb Abdomen red, the ovipositor rather short; female 



sanguinea Felt, C. 17 

 bbbb Abdomen orange red, ovipositor nearly as long as the abdomen 



ligni n.sp., C. aaiogw 

 aa 14. antennal segments 



b Abdomen reddish brown, the fifth antennal segment with a stem one-third 



the length of the basal enlargement; male nodosa Felt, C. 10 



bb Abdomen fuscous yellowish, the fifth antennal segment with a stem three- 

 fourths the length of the basal enlargement; male 



americana Felt, C. 616 



bbb Abdomen yellowish orange, the fifth antennal segment sessile, with a 



length two and one-half times its diameter. Reared from pine 



needle swellings coloradensis Felt, C. a2287 



aaa 15 antennal segments 



b Abdomen deep orange and yellowish, the fifth antennal segment of the male 

 with a stem three-fourths the length of the basal enlargement; female 

 with the ovipositor two-thirds the length of the abdomen; reared from a 



fleshy leaf fold on Myrica asplenifolia Felt, C. 1 103 



bb Abdomen dark brown basally, reddish apically, the fifth antennal segment 

 with a stem one-half longer than the basal enlargement 



a c e r i f o 1 i a Felt, C. 35 

 bbb Abdomen reddish brown; ovipositor short; reared from Lasioptera 



V i t i s gall brevicauda Felt, C. 878 



aaaa 16 antennal segments 



b Abdomen yellowish red, the fifth antennal segment with a stem one-fourth 



longer than the basal enlargement; male pini Felt, C. 87 



bb Abdomen yellowish orange, fifth antennal segment with a stem twice the 



length of the basal enlargement p a r m a Felt, C. 1488 



bbb Abdomen dark brown; antennal segments sessUe, ovate, the fifth with a 

 length twice its diameter, the ovipositor one-fourth the length of the 

 abdomen breviaria Felt, C. 77 



Janetiella tiliacea Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 121-22 (separate, p. 25) 

 (Oligotrophus) 



1908 N. Y. State Mus. Bui. 124, p. 371 



This light brown male was taken on basswood, Tilia ameri- 

 cana, at Westfield, N. Y., May 23, 1906. 



