August, '10] FELT : GALL MIDGES 355 



Reared from above gall Dasyneura atricornis Walsh. 



Reared from above gall Cecidomyia atrocularis Walsh. 



Reared from above gall Dasyneura alhovittata Walsh. 



Reared from above gall Lestodiplosis decemmaculata AYalsli. 



Pine-cone gall resembling a slender R. strohiloides gall. 



RJiahdophaga persimilis Felt. 

 Ovate, terminal bud gall, diameter 1 cm. 



Ehabdophaga gnaphaloides Walsh. 



Small bud gall Dasyneura . calif ornica Felt. 



Small bud gall Bhabdophaga gemmce Felt. 



Reared from apparently normal bud. . . . Bhahdophaga latehrosa Felt. 

 Small, conic, apical bud gall Dasyneura gemnm Felt. 



Twig Galls 



Reared from willow t\ngs, gall undeseribed. 



Asphondylia salictaria Felt. 

 Larvffi in subcortical cells, no s^-elling. .. .Dasyneura corticis n. sp.^ 



Slender twigs, slightly enlarged Sackenomyia packardi Felt. 



Slender twigs, slightly enlarged Sackenomyia porterce Ckll. 



Slender twigs, slightly enlarged Mayetiola cauUcola Felt. 



Slender twigs, slightly enlarged Rhabdophaga caulicola Felt. 



Twigs probably hardly enlarged Mayetiola perocculta Ckll. 



Slender twigs, slightly enlarged Mayetiola americana Felt. 



Twigs uniformly enlarged, gall 5 to 7 em. long. 



Rhabdophaga podagrce Felt. 



Gall similar to above, cells in wood Rhabdophaga cornuta Walsh. 



Twigs irregularly enlarged, galls 1 to 3 cm. long. 



Rhabdophaga salicis Schr. 

 T^vigs irregularly enlarged, gall 1 to 3 cm. long, buds dwarfed. 



Rhabdophaga triticoides Walsh. 



Apical, fusiform, beaked gall, length 2 em Mayetiola rigida 0. S. 



Reared from similar gall RJiabdophaga sodalitatis Felt. 



Nodular gall at base of twig, length 8 mm. 



RJiabdophaga nodulosa Walsh. 

 Inconspicuous knot or twig enlargements. .Mayetiola latipennis Felt. 



^Male: Length 2 mm., antennal segments 16, the fifth with a stem three 

 fourths the length of the cylindric basal enlargement, which latter has a 

 length twice its diameter. Mesonotum dull black. Scutellum fuscous yel- 

 lowish, postscutellum a little darker. Abdomen dull reddish orange. Legs 

 a variable fuscous yellowish. Female: Length 1.75 mm., 15 antennal seg- 

 ments, the fifth with a length 2i/2 times its diameter. Mesonotum dull brown. 

 Abdomen deep red. 



