Cecidomyiidae 739 



Adiplosis Felt 

 A. toxicodendri Felt. Nassau, Je 14, on poison ivy. 



CECIDOMYIA98 



C. balsamicola Lint. Deforms balsam leaflets. Is widely distributed. Adult has 



not been definitely connected with its food plant. ? North Creek, Aug. 

 C. bedeguar Walsh. Shushan, Je 14, gall on Crataegus. 

 C. boehmeriae Bt. Produces a fusiform stem swelhng on nettle (Boehmeria), and 



is probably a species of Lasioptera. Shushan. 

 C. celastri Stebb. Probably identical with the species producing a subcortical stem 



swelling on Celastrus at W. Nyack. 

 C. citrina O.S. Produces variable petiole and twig swellings on linden. Rhinebeck. 



Apparently widely distributed in the State. 

 C. coUinsoniae Bt. Produces a green, onion-shaped, pubescent swelling on the 



under side of the leaves of Collinsonia. Garrison. Probably widely distributed. 

 C. erubescens O.S. Produces a common marginal leaf fold, Itonida foliora Rssl. & 



Hkr. may prove to be a synonym. 

 C. eupatoriflorae Bt. Produces globose enlargements of the flower head of 



Eupatorium ageratoides. Vic. NYC. 

 C. fulva Bt. Produces a globular, succulent swelling of stem, petiole, or leaf. 



Recorded from Shushan. Probably widely distributed in the State. Has been 



provisionally referred to the genus Lasioptera. 

 [C. grossulariae Fitch. Inhabits gooseberries, and is presumably a NY species.] 

 C. impatientis O.S. Canandaigua, Aug 31 ; Newport, Aug, Yg. Appears to be 



common in the State. Inhabits a nearly globose, succulent swelling at the 



base of the flower of Impatiens fulva. 

 C. inimica Fitch. Observed by Dr. Fitch in wheat fields infested by the wheat 



midge. 

 C. majalis O.S. Produces a thin-walled, more or less wrinkled gall along the mid- 

 rib of oak which may be identical with that from which Clinodiplosis florida 



Felt was reared. Moderately common in the State. 

 C. meibomiae Bt. Produces an elongate, fusiform, clustered bud growth on various 



species of tick trefoil. Vic. NYC. Probably widely distributed. 

 C. niveipila O.S. Produces a common swollen vein fold margined with a white 



pubescence, on various oaks. Hudson Falls, Je 6, on black oak and Quercus 



prinus. 

 C. nyssaecola Bt. Produces a narrow, marginal leaf fold on sour gum {Nyssa 



sylvatica). Vic. NYC, very common. 

 C. ocellaris O.S. Produces a common and widely distributed, circular, yellowish 



and red-margined discoloration on soft maple leaves. 

 C. pellex O.S. Produces a subglobular ash leaf gall, quite different from the gall 



usually considered as being produced by this species. Canandaigua, Je 4; 



southern Hudson R. Val., moderately common. 

 C. pinirigidae Pk. Produces deformed pine needles with a swollen base. The true 



gall-maker has not been reared. Moderately common on LI and in vie. of 



Albany. 



' The species of Cecidomyia are of uncertain generic location. 



