ART. 10 GALL-INHABITING CYNIPID WASPS WELD 119 



DIASTROPHUS CUSCUTAEFORMIS Osten Sacken 



Galls were collected at Evanston, Winnetka, Waukegan, and Wil- 

 low Springs, 111.; Batesburg (E. H. McGregor) and Fairfax, S. C; 

 Bedford County, Va. ; Washington, D. C. ; and New York City 

 (Beutenmiieller). About Chicago adults emerged June 6-11 and at 

 Washington April 25. Brodie collected galls at Toronto, adults 

 emerging May 29. He also reports the gall common on Rubus vil- 

 losus at Aspdin and Port Sidney, Muskoka, where adults emerged 

 May 30 to June 3. 



DIASTROPHUS NEBULOSUS (Osten Sacken) 



This gall on blackberry' canes has been collected at Poplar Bluff, 

 Mo. (adults emerged June 1-11); Chesterton, Ind. ; Willoughby, 

 Ohio; Farmingdale (Crosby) and New York City (Beutenmueller) 

 (adults emerged April 20), N. Y.; College Park (Gahan), Md. 

 (emerged April 24) ; Washington, D. C. (emerged May 1-30, 1912) ; 

 Fairfax county (Cushman) (emerged May 27), Fredericksburg and 

 Bluemont, Va. ; Fairfax, S. C. ; Billy's Island in Okefenokee Swamp 

 (J. C. Bradley), Ga. 



DIASTROPHUS NIGER Bassett 



This spindle-shaped enlargement of the stem of Potentilla cana- 

 densis has been collected at Evanston (adults emer<i'ed April 15-May 

 1) and Fort Sheridan, 111.; Poplar Bluff, Mo.; Hoxie, Ark.; (adults 

 emerged at Evanston June 1-11); Onckama (T. Hatfield), Mich.: 

 Ithaca, N. Y. ; Washington, D. C. (flies emerged April 10-25). 



DIASTROPHUS TURGIDUS Bassett 



Galls collected at Glencoe, 111. ; in early May began to yield adults 

 on May 20, 1907. From galls collected at Evanston flies emerged in 

 1909 on June 10. In 1912 they emerged May 1-15. Brodie col- 

 lected galls on Rubus strigosus at Toronto and reared adults May 

 25-27, 1890, and in 1891 on May 21, 23, 24. In 1892 the new galls 

 were full grown by July 17. He had galls sent to him from Grimsby 

 from which flies emerged May 15-24. He reports the galls as com- 

 mon in 1892 around Port Sidney and at Whitechurch and common 

 throughout Muskoka. 



AYLAX GLECHOMAE (Linnaeus) 



The writer has collected galls of this species at Evanston, Wauke- 

 gan, Joliet, and Moline, 111.; La Porte, Ind.; North East, Pa.; Me- 

 dina and Ithaca, N. Y. ; and Rosslyn and East Falls Church, Va. 

 The green and succulent galls may be found developing in June, 



