370 -N'EW YORK STATE MUSEUM 



cc 2d to 4tli segments of the posterior tarsi greatly enlarged : abdo- 

 men pale yellowish, greenish dorsally; 3d vein uniting with 

 costa just beyond the apex; antennae dark brown, the 5th seg- 

 ment with a stem li the length of the basal enlargement ; male 



1 a t i p e s n. sp., C. 511 

 bbbb 15 antennal segments 



c Abdomen dark reddish ; antennae dark reddish brown, the 5th seg- 

 ment with a stem H the length of the basal enlargement: male 

 (O 1 i g o t r o p h u s) t s u g a e Felt, C. 165 

 aa 16 to ig antennal segments 

 b 16 antennal segments 



c Antennal segments sessile, the 5th with a length 2j^ times its 

 diameter; ovipositor yi the length of the abdomen 

 d Abdomen reddish brown, the body slender, the lobes of the 

 ovipositor with a length twice their width ; bred from 



slender willow twigs ; female 



caulicola n. sp., C. ai822a 

 dd Abdomen dark brown, ihe body stout, the lobes of the ovi- 

 positor with a length 3>< times their width ; bred from sub- 

 globose galls on slender willow twigs 



t u m i d o s a e n. sp., C. 1300 

 cc Antennal segments with more or less of a stem 



d The 5th antennal segment with a stem 14 the length of the 

 basal enlargement, which latter has a length twice its 

 diameter ; abdomen yellowish brown ; 3d and 4th palpal seg- 

 ments equal; bred from Ribes; female 



californica n. sp., C. 919 

 dd sth antennal segment with a stem 14 the length of the basal 

 enlargement ; abdomen dark brown ; bred from slender wil- 

 low twigs; male... caulicola n. sp., C. ai822a 



ddd 5th antennal segment with a stem 14 the length of the basal 

 enlargement ; abdomen yellowish brown ; bred from 



Ribes ; male californica n. sp., C. 919 



dddd sth antennal segment with a stem % longer than the basal 

 enlargement ; abdomen fuscous ; bred from elm buds and 



folded leaves u 1 m i Beutm., C. 1239, ai683 



bb ly antennal segments 



c sth antennal segment with a stem Y^ the length of the basal en- 

 largement ; abdomen dark brown; bred from willow; male 



a m e r i c a n a n. sp., C. 920 

 bbb 18 antennal segments 



c sth antennal segment with a stem ^ the length of the basal en- 

 largement 



d Abdomen reddish brown; bred from wheat stems; male 



(C e c i d o m y i a ) d e s t r u c t o r Say, C. 771, yj2 

 bbbb 19 antennal segments 



c Abdomen reddish brown ; 5th antennal segment with a length 3 

 times its diameter; ovipositor 34 the length of the abdomen, the 

 lobe with a length twice its width ; bred from wheat stems ; 

 female (Cecidomyia) destructor Say, C. 771 



