58 PROCEEDINGS OF THE NATIONAX. MUSEUM tol. 68 



The easiest way to rear the flies is to locate a tree in the fall well- 

 infested with the hedge hog gall and from this tree gather twigs 

 in the spring just before the buds start, putting them in a bottle of 

 water and setting the whole in a battery jar with a cloth over the 

 top. The galls are common in the Chicago area, having been col- 

 lected at Winnetka, Glencoe, and Willow Springs, 111., and Miller, 

 Ind. In 1909 adults issued May IT. In 1913 pupae were found in 

 the galls on April 28 and adults issued May 1-20. At Washington 

 an adult emerged May 6, 1924. 



ACRASPIS HIRTA (Bassett) 



Galls agreeing with the Bassett types on rock chestnut oak were 

 collected on Q. montmm at Storm King (M. D. Leonard), and Ithaca, 

 N. Y., and at Bluemont, Va. They are found in September and 

 October. No adults reared. Probably emerge in late fall. 



ACRASPIS MACROCARPAE Bassett 



Galls of this species on Quercus macrocarpa are here recorded 

 from Evanston, Winnetka, Libertyville, Glen Ellyn, Fountaindale, 

 and Moline, 111. They contained pupae early in September, and 

 living adults were cut from galls the last week of the month. Some 

 emerged naturally November 14. From galls collected at Medina, 

 N. Y,, an adult emerged before December 5. Galls were seen also 

 from Corinth, Iowa (C. Barracks) ; Cedar Point and Holton, Kans. 

 Brodie collected galls at Toronto and producers emerged November 

 9-14, 1885, November 15-30, 1892, November 9, 1893, all apterous 

 fertile females. 



ACRASPIS PEZOMACHOIDES (Osten Sacken) 



This species is here recorded from following localities: Medford 

 and Pitman, N. J.: Syracuse (Crosby) (contained adults Sept. 30), 

 Manorville (Crosby), Riverhead (Crosby), N, Y. ; Falls Church, Va., 

 Washington, D. C. (contained pupae September 19 and adults October 

 20), River Junction, Fla., Texarkana, Ark., Ironton and Poplar 

 Bluff (cut out adults November 16), Kimmswich, Mo. Adults prob- 

 ably emerge in late November or early December. 



ACRASPIS VILLOSA Gillette 



Galls of this species were Collected at Evanston and Winnetka, 

 111., where living adults were cut out of the galls on November 1; 

 and at Medina, N. Y., where pupae were found August 24 and Sep- 

 tember 4 and adults were cut out early in October. Professor 

 Dudley collected galls on the shores of Seneca Lake, preserved in 

 Cornell collection. 



