Cecidomyiidae '721 



C. hamamelidis Felt. Albany, Je 12, on witch-hazel. 



C. flavescens Felt. W. Nyack, Jl 29, 30, reared from a closely adherent, pyriform, 



apical leaf gall on Solidago graminifoHa. 

 C. fulva Felt. Albany, Jl 3, on Cornus. 

 C. virginica Felt. Albany, Je 12, on witch-hazel. 



Trotteria Kieffer 



T. argenti Felt. Albany, Jl 3, on New Jersey tea. 



T. caryae Felt. Albany, Je 20, on hickory. 



T. caudata Felt. Karner, Jl 5, on bush honeysuckle. 



T. karnerensis Felt. Karner, Jl 5, on elder. 



T. metallica Felt. Albany, Je 19, on hickory. 



T. solidaginis Felt. W. Nyack, Jl 2, reared from Solidago material containing 

 galls of Camptoneuromyia adhesa Felt and Asphondylia monacha O. S. This 

 species has also been reared in association with Asphondylia thalictri Felt, and 

 is probably zoophagous. 



T. squamosa Felt. Albany, Jl 26, on New Jersey tea. 



T. subfuscata Felt. Albany, Jl 17, on Solidago. 



T. tarsata Felt. Albany, Jl 24, on scrub oak. 



Tribe OLIGOTROPHIARIAE 



Phytophaga Rondani 



P. aceris Felt. Albany, May 21, on red maple. 



P. azaleae Felt. Albany, May 18, on Azalea. 



P. balsamifera Felt. L. Clear, Je 7, on balsam. 



P. caudata Felt. Albany, May 9, on wild geranium. 



P. destructor Say. The Hessian Fly. Well known because of its occasionally 



very severe injury to wheat and barley, in particular. Is known to breed also 



in quack grass and Canadian rye grass. Generally distributed. Periodically 



destructive wherever wheat is grown. In Jefferson and St. Lawrence Counties, 



found in barley. One specimen found in Franklin Co. 

 P. electra Felt. Albany, May 18, on hazel. 



P. fraxini Felt. Albany, Poughkeepsie, reared from leaf petioles of ash. 

 P. latipes Felt. Albany, Jl 6, on New Jersey tea. 

 P. rigidae O.S. Produces a characteristic beaked gall on willow. Appears to be 



widely distributed in the State, the adults appearing in early spring. 

 P. socialis Felt. Albany, Je 1, on early meadow rue. 

 P. thalictri Felt. Albany, Je 1, on early meadow rue. 

 P. tsugae Felt. L. Clear, Je 7, on hemlock. 

 P. ulmi Felt. Canandaigua; deforms the small terminal leaves or leaf buds of the 



American elm about NYC and probably occurs at Albany. 

 P. violicola Coq. The Violet Midge. Has caused considerable injury in violet 



houses at Rhinebeck and presumably in other parts of the State. 

 P. virginiana Felt. Albany, May 23, on choke cherry. 



