86 NEW YORK STATE MUSEUM 



cccc Fifth antennal segment with a stem one-quarter longer than the 

 basal enlargement 



d i6 antennal segments ; the dorsal plate triangularly incised ; 

 ventral plate deeply and narrowly incised ; reared from 



a deformed willow bud gemmae Felt, C. 254 



ccccc Fifth antennal segment with a stem three times the length of 



the basal enlargement p or recta n. sp., C. 1301 



aaa 18 to 20 antennal segments 



h Females, antennal segments sessile 

 c 18 antennal segments 



d Antennal segments tapering distally 



c Length 2.5 mm ; abdomen dark brown ; the fifth anten- 

 nal segment with a length one-half greater than its 

 diameter; thinly setulose; the fourth palpal segment 

 one-half longer than the third; reared from whitish 

 cocoons on poplar, .p o p u 1 i Felt, C. 78x, a322, aii26 

 ec Length 3 mm; abdomen dark brown; the fifth antennal 

 segment with a length twice its diameter; thickly 

 setulose ; fourth palpal segment one-quarter longer 

 than the third ; reared from a small, oval, rosette gall 



on willow normaniana Felt, C. 1246 



ecc Length 3.5 mm; abdomen reddish brown; the fifth an- 

 tennal segment with a length two and one-half times 

 its diameter ; fourth palpal segment a little longer 

 than the third; reared from slender willow twigs.... 



c a u 1 i c o 1 a Felt, C. ai822 

 eeee Length 1.5 mm; abdomen reddish brown; the fifth 

 antennal segment with a length twice its diameter ; 

 thickl}^ setulose ; the fourth palpal segment one- 

 quarter longer than the third; reared from twigs on 



Cephalanthus cephalanthi Felt, C. 1048 



cc 19 or 20 antennal segments 



d Abdomen dark brown; the fifth antennal segment with a 

 length one-half greater than its diameter ; the third and 

 fourth palpal segments equal ; reared from a gouty twig 



gall on willow batatas Walsh, a686, aii02, aiic8 



dd Abdomen reddish brown ; the fifth antennal segment with 

 a length twice its diameter; the fourth palpal segment 

 one-quarter longer than the third ; reared from a fleshy 



pouch gall on Spiraea leaf ; . . . . 



s a 1 i c i f o 1 i a Felt, C. 1045, ai505 

 hh Males, antennal segments stemmed 



c Stem of the fifth antennal segment one-third the length of the 

 basal enlargement 

 d 19 antennal segments ; length 3 mm ; dorsal plate very deeply 



incised, almost divided; the harpes truncate 



oonsobrina Felt, C. 39 



dd 18 antennal segments; length 2 mm; dorsal plate very deeply 



emarginate ; harpes subtriangular ; reared from whitish 



cocoon on poplar populi Felt, C. /Sx, 3322, aii26 



