1912] The Ottawa Naturalist 167 



R. rhodoides Walsh. Gall a large, apical rosette on willow 

 shoots, with the distal third of the central leaves free, while 

 most of the basal leaves are entirely so.. Described as Cecidomyia 



R. strobiloides O.S. Gall the familiar, rather close, pine- 

 cone-like deformity on willow, some 1 to \\ inches in diameter 

 and 1 to 2 inches long. Described as Cecidomyia. 



R. brassicoides Walsh. Gall h "to 1 inch long. A close 

 apical deformity on willow, composed of a series of broad, 

 appressed bud scales. Described as Cecidomyia. 



R. comuta Walsh. The larvae excavate cylindric holes in 

 the solid wood of the largest willow stems. Described as 

 Cecidomyia. 



Dasyneura Rond. 



Separated from the preceding by the third vein being 

 straight or curved anteriorly, tapering but little distally and 

 uniting with cost a distinctly before the apex of the wing. 

 Species usually dark brown. Food habits somewhat variable, 

 the species living mostly in simple bud or leaf galls. 



D. rhodophaga Coq. The larvae occur in buds of cultivated 

 roses. Described as Cecidomyia, later referred to Neocerata. 



D. trijolii Loew. The larvae live in the folded, slightly 

 deformed leaflets of white clover, Trijolium repens. An intro- 

 duced European species. 



D. vaccinii Smith. The larvae occur in terminal buds of 

 cranberry. Mentioned by Osten Sacken without description, 

 as Cecidomyia vaccinii. The invalid C. oxycoccana proposed by 

 Johnson is antedated by C. vaccinii Smith, not Osten Sacken. 



D. gleditschiae O. S. The larvae occur in the folded leaflets 

 of Gleditschia. Described as Cecidomyia. 



D. pseudacaciae Fitch. The larvae occur in badly deformed, 

 rolled leaflets of the black locust, Robinia. Described as Ceci- 

 domyia. 



D. semenivora Beutm. Gall a deformed fruit of violet. 

 Length about h inch, diameter \ inch, irregular, a variable 

 brown. Described as Cecidomyia. 



D. rhois Coq. Gall an elongate, oval swelling 5 mm. long on 

 the small roots of poison ivy, Rhus toxicodendron. Described as 

 Cecidomyia. 



D. leguminicola Lintn. The yellowish midge larvae occur 

 in clover heads. Described as Cecidomyia. 



D. lysimachiae Beutm. Gall a conical, enlarged termina* 

 bud of loosestrife, Lysimachia. Described as Cecidomyia. 



D. serrulatae O. S. Gall a subconic, deformed alder bud \ 

 to --j inch in diameter. Described as Cecidomyia. 



(To be continued.) 



