AKT. 10 GALL-INHABITING CYNIPID WASPS WELD 77 



galls. The young galls begin to show about the middle of May when 

 the 3'oung leaves are not one-third grown. 



Habitat. — The type locality is a tree of Q. hkolor four miles west 

 of EA'anston, 111., out Emerson Street. Here the galls were observed 

 year after year for several years. Galls collected June G, 1909, gave 

 flies in numbers June 29 and in early July. In 1912 adults emerged 

 June 20-28. In 1913 they emerged on June 2G. In 1916 the flies 

 were mostly out by June 28 and galls beginning to dry up. In 1917 

 they contained pupae on June 2-1. The paratype locality is a tree of 

 Q. macrocarpa in Winnetka. 111. Miss Howe found galls at Ithaca 

 and Geneva (see thesis) and the writer has seen them at Medina, 

 N. Y.. as well as at Evanston and Moline, 111., on Q. macrocarpa. 



ANDRICUS HOWERTONI Bassett 



This species was described from a gall on an unknown oak in 

 New Mexico. The writer has collected galls, which agree with a 

 Bassett type gall, on Q. utululata and giisea at Las Vegas, Tijeras, 

 Magdalcna and Kingston, N. Mex. and at Williams, Ashfork, and 

 Prescott, Ariz. Galls collected at Williams on April 11 gave adults 

 by ^Nlay 11 and some held over and emerged the next spring. 



ANDRICUS INCERTUS Bassett 



Andricns incertus Bassett, Trans. Amer. Eiit. Soc, vol. 26. 1900, p. 317. 

 Andricvs fimhriatus Weld. Proc. U. S. Nat. Mus.. vol. 61, 1922, art. 19, p. 29-30. 



The holotype of incertus was taken ovipositing in bud of Q. 

 hicolor on April 22 at Waterbury, Conn., and is preserved in the 

 Bassett collection in Philadelphia. In June 1921 S. A. Rohwer at 

 my request took a paratype of fimhriatus to Philadelphia to com- 

 pare with incertus and could see no difference. This species pro- 

 ducing a gall in a fimbriate cup on acorn cup of Q. hicolor should 

 henceforth be known as incertus Bassett. These galls have been 

 noted at Washington, D. C. The alternating generation is unknown. 



ANDRICUS LANIGER (Ashmcad) 



The live oak woolly midrib gall has been observed at Billy's 

 Island in Okefenokee Swamp (Dr. J. G. Xeedham) and Savanah, 

 Ga. ; at Jacksonville, Green Cove Springs, Gainesville, Ocala and 

 Clearwater, Fla.; at Sulphur (E. S. Tucker) and Audubon Park 

 (E. R. Barber), La.; at Houston, Richmond, Wharton, Cuero, 

 Sabinal, Austin, Boerne and Kerrville, Tex. 



Galls were seen starting to develop at Sabinal as early as July 19. 

 They become full grown before October, when certain trees contain 

 incredible numbers of them, almost every leaf being infested. Such 



