CATALOGUE OF GALL-MAKING CYNIPID^ OF NORTH AMERICA 



Part I. Classification by Galls 

 GALLS ON OAKS (Quercus) 



I. Galls on the Roots: 



Belenocnema treatae Mayr. '81, p. 17, 9 , Q- virens, Fla. 



Polythalamous, clustered, fleshy. 

 = Dryorhizoxenos floridanus Ash. '81, p. XXV-XXVI, cf 9 , Q. virens, Fla. 

 Callirhytis radicis Bass. '89b, p. 237-238, 9 , Q. alba, Conn. 



Spring. Blister-like swellings of the bark. 

 Trigonaspis radicis Ash. '97, p. 113-114, c? 9 , Utah. 



Rounded; fleshy, clustered. 

 Dryophanta radicola Ash. '97, p. 116, 9 , scrub-oak. Mo. : Cook '04, Q. alba, Ind. 



May 21. Gall lost and not described. 

 Andricus apicalis Ash. '97, p. 120, 9 , Q- wisliceni, Cal. 



Globular. 

 Callirhytis rhizoxenos Ash. '97, p. 132, 9 , Q. virens, Ariz. 



June-July. Fleshy, polythalamous, irregular in shape. 



II. Galls of the Bbanches and Twigs: 



1. No visible gall or only slight swelling — 



Andricus cryptus Ash. '87b, p. 145, 9 , Q- catesbaei, Fla. 



May. Cells concealed under the bark. 

 Callirhytis ceropteroides Bass. '00, p. 324, 9 , Q. tindoria, Conn. 



Cells in old wood at base of new growth. 

 Neuroterus virgeus Gill. '93, p. 166-167, 9 , Colo. 



May 8-13. Slight swelling. 

 Neuroterus catesbaei Ash. '81, p. XV-XVI (Cijnips), Q. catesbaei, & 9 , Fla. 



April 28. Slight wavy swelling at base of new shoots. 



2. The twig is dwarfed, but not specially modified — 



Neuroterus distortus Bass. '00, p. 336, cf 9 , Q. bicolor, Conn. 



Cells numerous, plate 1, 178. 

 Neuroterus tectus Bass. '00, p. 331-332, cf 9 , Q. prinoides. Conn. 



May-June (see page 13). Slight basal swelling, or simple shortening due to larval 

 cells. 



3. The twig is dwarfed, distorted and forms a short ovoid mass— polythalamous— 

 Callirhytis (Cynips) scitula Bass. '64, p. 683-684, cf 9 , «■ tindoria, Conn.: Beach, Q. rubra, Iowa: 



Gill. '89, Q. rubra, Iowa, Mich.; Q. tindoria, Mass. 

 New growth in spring, plate 1, 192. 



