REPORT OF. THE STATE ENTOMOLOGIST I907 42I 



aa 18 antennal segments, the 5tli witli a stem ^ the length of the basal 

 enlargement 

 b Abdomen light yellow, length 2 mm, the basal enlargement of the 

 5lh antennal segment with a length ^ greater than its diameter. . . 



f 1 a V i d a n. sp., C. 504 

 (7(7(; 19 antennal segments 



b 5th antennal segment with the stem in the male ^ and in the female 



Vo the length of the basal enlargement 



c Abdomen reddish orange, length male 2 mm, female 1.5 mm, 



the basal enlargement of the 5th antennal segm :nt with a stem 



twice the diameter ; bred from Rhabdophaga batatas 



galls saliciperda n. sp., C. aiSiSa 



aaaa 20 or more antennal segments 



b 5th antennal segment with a stem as long as the basal enlargement 

 c Abdomen reddish brown, length 2 mm; 21 antennal segments, 

 the basal enlargement of the 5th with a length ^ greater than 



its diameter ■. . c a u d a t a n. sp., C. 1219 



cc Abdomen orange-yellow, length 1.5 mm; 23 antennal segments, 

 the basal enlargement of the 5th with a length 54 greater 



than its diameter cerasi Felt, C. 236 



ccc Abdomen light brown, length 1.5 mm; 23 antennal segments, the 



basal enlargement of the 5th with a length twice its diameter 



canadensis n. sp., C. 1335 

 bb stli antennal segment with a stem ^ longer than the basal en- 

 largement 

 c Abdomen reddish brown, length 2 mm ; 28 antennal segments, 

 the basal enlargement of the 5th with a length twice its diameter 



photophila Felt, C. 119 



WINNERTZIA Roncl. 



This genus is easily distinguished from all other members of 

 the group by the four simple long veins, and in particular by the 

 cross vein arising froin the third vein at an obtuse angle [pi. 39, 

 fig. 9]. The antennal structures are exceedingly peculiar, inasmuch 

 as the circumfili are modified to form unique horseshoelike struc- 

 tures on each side of the antennal segments. 



Key to species 



a 13 antennal segments, the 5th with a stem .)4 the length of the basal 

 enlargement 



b Abdomen yellowish brown, length i mm ; male 



c a r p i n i Felt, C. 106 

 aa 14 antennal segments 



b Segments sessile or subsessile; females 



c Abdomen reddish brown, length 2 mm, the 5th antennal segment 

 with a length J^ greater than its diameter, the 4th palpal seg- 

 ment Yi longer than the 3d arizoniensis n. sp., C. 1022 



cc Abdomen greenish yellow, length 2 mm, the 5th antennal seg- 

 ment with a length 3 times its diameter, the 4th palpal segment 

 twice the length of the 3d c a 1 c i e q u i n a Felt, C. 67:} 



