AKT. 10 GALL-INHABITING CYNIPID WASPS WELD 125 



RHODITES NODULOSUS Beutenmueller 



Evanston, 111., is one of the type localities for this species, the 

 i^alls being collected on sweetbriar rose May 11, 1909, when they 

 contained pupae. Adults emerged from May 25 until early in 

 June. Galls collected in Wilmette April 13, 1919 contained pupae 

 and adults emerged jNIay 12 and 17. Similar galls on Rosa rugosa 

 at Vicksburg, Mich,, gave flies which seem to be this species. 



RHODITES PUSTULATOIDES Beutenmueller 



The two type flies of this species were reared May 21, 19io from 

 an unknown rose gall from Miller, Ind. The writer has reared 

 flies which agree with the above types from galls collected at East 

 Falls Church, Va., in July 1920, the flies emerging April 9, 1921. 

 The galls were globular, thin-walled, armed with weak spines, 

 smaller than those of hicolor and similar to those of nehulosus. 



RHODITES RADICUM Osten Sacken 



Large dark red galls were collected in summer of 1907 about 

 the base of Rosa caroliim growing in creek bottom 2 miles south 

 of Medina, N. Y., adults emerging June 10, 1908. The galls were 

 not underground but partially hidden by the debris that had be- 

 come entangled about the base of the bushes at time of high water. 

 More galls were collected from the same bushes August 29, 1908, 

 adults emerging in out-of-door cage at Evanston, 111., the next July. 

 These flies agree with Osten Sacken paratypes. 



RHODITES ROSAE (Linnaeus) 



The mossy rose gall on the sweetbriar rose was collected at Evans- 

 ton, Kenilworth, and Waukegan, 111.; Adrian (O. Clark), Mich.; 

 Xorth East, Pa.: Medina, Albion and Ithaca, N. Y. ; Chesapeake 

 Beach (L. Haney), Md.; and East Falls Church, Va. About Chi- 

 cago the adults issued April 27 to May 4, 1907, and the new galls 

 Avere developing on the leaves by June 28. In 1909 adults began to 

 emerge May 25. 



The Brodie notes say that the gall is said to have been seen at 

 Toronto in the fall of 18G8 but he first noticed it in summer of 

 1872. Adults emerged there May 21, 1884, May 20, 1885, May 24, 

 1886. He received galls from Grimsby, Ontario, from which pro- 

 ducers emerged May 13-10, 1892. '' Old residents of Grimsby agree 

 in saying that the gall first appeared there in the year 1889." 



RHODITES ROSAEFOLII Cockcrell 



Galls Avere collected at Leadville. Colo.: Thistle, Utah: Flagstaff, 

 Ariz, (adults emerged April 18 and 24) ; Waukegan (adults emerged 

 May 11 and June 14), Ravinia and Evanston, 111.; and Medina. X. Y. 



