172 BIOLOGICAL SUKVEY OF 



Cecidomyiidae (Itonididae) . Gall Midges 

 Catocha Haliday 



C. sp. N. E. Harbor, July 8. 



Lkstremia Macquart 



L.? ACERiFOLiA Felt. S. W. Harbor, June 18, 1921. 



L. DYARi Felt. Bar Harbor, July 22, 1912. 



L. soLiDAGiNis Felt. Bar Harbor, July 22, 1919. 



COPtDYLOMYIA Felt 



C. TUMiDA Felt. N. E. Harbor, July 8 (Minot). 



PORRICONDYLA Eondani 



P. SYLVESTRis Felt. Bar Harbor, Aug. 12, 1921. 

 P. sp. N. E. Harbor, Aug. 6 (Minot). 

 P. sp. Bar Harbor, June 6. 



Ehabdophaga Westwood 



R. BATATAS Walsh. "Willow potato-gall. S. W. Harbor; Sal- 

 isbury Cove, Aug. 5 (Sanford). 



R. BRASsicoiDEs Walsh. Willow cabbage-gall. Bar Harbor; 

 Salisbury Cove, Aug. 5 (Sanford). 



R. sALiciFOLiA Felt. Spiraea pod-gall. Salisbury Cove; Bar 

 Harbor. 



R. sTEOBiLoiDEs Walsli. Coiie willow-gall. Common, a cone- 

 like gall on willow. 



R. TRiTicoiDES Walsh. Wheat-ear willow-gall. Bar Harbor, 

 July 10. 



Dasyneura Eoudani 



D. GAYLussACii Felt. Blueberry leaf -gall. 



Lasioptera Meigen 



L. spiRAEAFOLiA Felt. Bar Harbor. A blister-leaf gall on 

 Spiraea latifolia (meadow sweet). 



Neolasioptera Felt 



N. RAMUscuLA Beutm. Aster stem gall. S. W. Harbor. Fusi- 

 form stem galls on asters. 



ASTEROMYIA Felt 



A. CARBONiFERA Felt. Commou. An oval black, ocellate blis- 

 ter-gall on the leaves of Solidago. 



