352 NEW YORK STATE MUSEUM 



d 15 antennal segments 



c 5th antennal segment with a length ' j greater than 



its diameter 



f 15th antennal segment slightly extended, with 



a length only 3 times its diameter, the 4th 



palpal segment Yi longer than the 3d. Bred 



from rolled willow leaves 



p 1 i c a t a n. sp., C. 1037 

 ee 5th antennal segment with a length twice its 

 diameter 

 f 15th antennal segment reduced; the 4th palpal 

 segment ^ longer than the 3d ; the ovi- 

 positor lobe with a length 3 times its width. 



Bred from a Strobiloides gall 



? albovittata Walsh, a 1442a, ar433a 



// 15th antennal segment extended, with a length 



fully 5 times its diameter; 3d and 4th palpal 



segments equal ; ovipositor lobe with a 



length 4 times its diameter. Bred from 



small, clustered, rosette bud galls on willow 



r a c e m i n. sp., C. 1245 



dd 17 antennal segments 



e Wings broad; 5th antennal segment with a length 



^ greater than its diameter; 4th palpal segment 



with a length twice that of the 3d ; ovipositor 



lobe with a length 2^4 times its diameter 



m a r g i n a t a n. sp., C. 81 



ee Wings narrow ; 5th antennal segment with a length 



twice its diameter ; the 4th palpal segment % 



longer than the 3d ; ovipositor lobe with a 



length 3 times its width. Bred from irregular 



twig gall on willow. . .s a 1 i c i s Schrank, ai356 



bb Males ; antennal segments stemmed 



c 5th antennal segments with a length J.^ that of the basal en- 

 largement 

 d Antennae slender, the basal enlargement of the Sth 

 segment with a length twice its diameter ; the palpi 

 slender, the 4th ]4 longer than the 3d ; harpes with a 

 long chitinous process apically. Bred from willow 



twig r a m u s c u 1 a n. sp., a 1449a 



dd Antennae stout, the basal enlargement of the 5th seg- 

 ment with a length ^.-^ greater than its diameter ; the 

 3d and 4th palpal segments equal; harpes without 

 long chitinous processes apicall}'. Bred from a nod- 

 ular gall at the base of willow twig 



s nodula Walsh, ai4i2, C. 779 



cc 5th antennal segment with a length ^ that of the basal en- 

 largement 

 d Antennae nearly as long as the body 



