198 NEW YORK STATE MUSEUM 



cc Second to fourth segments of the posterior tarsi greatly enlarged ; abdomen 

 pale yellowish, greenish dorsally; third vein uniting with costa just 

 beyond the apex; antennae dark brown, the fifth segment with a stem 

 one-half the length of the basal enlargement; male 



1 a t ip e s Felt, C. 511 



bhbh 15 antennal segments 



c Abdomen dark reddish; antennae dark reddish brown, the fifth segment 

 with a stem one-fourth the length of the basal enlargement; male; 



reared from spruce bud gall tsugae Felt, C. 165 



cc Abdomen yellowish brown; fifth antennal segment with a length two and 



■ one-half times its diameter latipennis Felt, C. 782 



aa 16 to 19 antennal segments 

 b 16 antennal segments 



c Antennal segments sessile, the fifth with a length two and one-half times 

 its diameter; ovipositor one-half the length of the abdomen 

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

 with a length twice their width; reared from slender willow twigs; 



female caulicola Felt, C. ai822a 



dd Abdomen dark brown, the body stout, the lobes of the ovipositor with 

 a length three and one-half times their width; reared from sub- 

 globose galls on slender willow twigs. ..tumidosae Felt, C. 1300 

 cc Antennal segments with more or less of a stem 



d Fifth antennal segment with a stem one-fourth the length of the basal 

 enlargement, which latter has a length twice its diameter; abdomen 

 yellowish brown; third and fourth palpal segments equal; reared 



from Ribes; female. californica Felt, C. 919 



dd Fifth antennal segment with a stem one-third the length of the basal 

 enlargement; abdomen dark brown; reared from slender willow 



twigs; male caulicola Felt, ai822a 



ddd Fifth antennal segment with a stem one-half the length of the basal 

 enlargement; abdomen yellowish brown; reared from Ribes; 



male californica Felt, C. 919 



dddd Fifth antennal segment with a stem three-fourths the length of the 

 basal enlargement; abdomen yellowish brown; reared from 



willow ..latipennis Felt, C. 782 



bb ly antennal segments 



c Fifth antennal segment with a stem three-fourths the length of the basal 

 enlargement; abdomen dark brown; reared from willow; male 



americana Felt, C. 92^ 

 bbb 18 antennal segments 



c Fifth antennal segment with a stem three-fourths the length of the basal 

 enlargement 

 d Abdomen reddish brown; reared from wheat stems; male 



destructor Say, C. 771, 772 

 bbbh 19 antennal segments 



c Abdomen reddish brown; fifth antennal segment with a length three times 

 its diameter; ovipositor one-fourth the length of the abdomen, the lobe 

 with a length twice its width; reared from wheat stems; female 



destructor Say, C. 771 





