American Insect Galls: Thompson 17 



(b) The substance lying between the rind and Icernel is fibrous and often very scanty. 



1. Size large; kernel central; leaf usually aborted. 



Amphibolips inanis, 0. S. '61, p. 58 (Cynips), Q. rubra, D. C; 0. S. '62, p. 242-245 (C'ynips), 9 , 

 Q. coccinea, or Q. rubra (?) D. C, June 20; = Callaspidia confluenta Fitch 5 Rept., p. 

 817, Red oak, N. Y. : Walsh '64 and '69, Q. rubra, cf 9 , ('69) : Bass. '63, Q. tincloria 

 (?), Conn.: Beut. Cat. and '04, Q. coccinea, Q. rubra, N. Y., N. J.: Gill. '89, Q. rubra, 

 Mich. June 20, 9 : Beach '95, Iowa: Cook '05, Q. coccinea, Q. rubra, Ind.: Harvard 

 Coll., Q. rubra, N. H. ' 

 Q. rubra, Q. coccinea, Q. alba, Q. palustris, Mass., R. I. Fly, June 21, plate 3, 10. 

 Callirhytis vaccinifoliae Ash. '97, p. 130, 9 , Q- vaccinifolia, Cal. 



Oct., Dec. 1-2-1 in. Globular, thin-shelled. 

 Holcaspis centricola 0. S. '61, p. 58-59 (Cynips), 9 , Q. obtusiloba, D. C. Autumn. Cook '05, 



Q. obtusiloba, Ind. (Leaf not aborted 0. S. '62, p. 247). 3-4 in. on leaf. 

 Amphibolips ilicifoliae Bass. '64, p. 681-682 {Cynips) cf 9 , Q. ilicifolia. Conn.: Harvard Coll., Q. 

 pumila, Conn.: Beut. Cat. Q. ilicifolia, N. Y., N. J.: Beut. '04, p. 11, Q. nana, N. Y. 

 Q. ilicifolia, Mass., R. I. May or June, gall. July, fly. Leaf aborted; ovoid, plate 

 4, 126. 

 Amphibolips cinerea Ash. '81, p. XIX-XX (Cynips), 9 , Q- cinerea, Fla. 



Leaf absent; globular. 1 1-4-1 1-2 in. (On twig.) 

 Amphibolips citriformis Ash. '81, p. XXVIII (Cynips), 9 , Q. phellos, Fla. 



Early May. Leaf absent; ovoid. 1 in. long. 

 Amphibolips melanocera Ash. '85b, p. 299, 9 , Q- aquatica, Fla. 

 June. Ovoid, leaf absent. 



2. Size small; leaf aborted. 



Amphibolips tinctoriae Ash. '97, p. 125, 9 , Q. tinctoria, Oct. Compressed, ovate, 2x1 cm. 

 Amphibolips cookii Gifl. '89, p. 220, 221, fig. 6, 9 , Q. rubra, Mich. 



Ovoid; on buds. Flies, Sept. 

 Andricus femoratus Ash. '87, p. 141, 9 , Q- tinctoria, Fla. Cook '05, p. 832, Q. rubra, Ind. 



3-10 in.; globular. No leaf. 



3. Galls small; leaf prese'nt and gall usually on under side; solitary — 



Holcaspis maculipennis Gill. '94, p. 236-237, 9 , Q- wrightii, N. Mex. 



1 1-2 cm. on leaf. 

 Holcaspis brevipennata Gill. '93, p. 31, 9 , Q. undulata, Cal. 



1-1 1-2 cm. below leaf. 

 Dryophanta bella Bass. '81, p. 93-95 (Cynips), 9 , Ariz. 



3-4 in. below leaf. 

 Dryophanta emoryi Ash. '97, p. 115, 9 , Q. emoryi, N. Mex. 



Dec. 2-3 mm. on leaf. Few filaments. 

 Andricus singularis Bass. '63, p. 326-327 (Cynips), cf 9 , (?. rubra. Conn. July 10. Beut. '04, 

 Cat. Q. rubra, N. Y. : 0. S. '65, D. C. : Gill. '89, Q. rubra, Mich. Flies June. 



Q. coccinea, Q. rubra, Mass. Fhes June 23. Tends to pierce lamina of leaf, plate 4, 71. 

 Andricus osten-sackenii Bass. '63, p. 327-328 (Cynips), cf 9 , Q. ilicifolia and Q. coccinea, Conn.: 

 0. S. '61, p. 56: Ash. '96, p. 186 Mo.: 



Mass. Fly early Jul.v. Tends to pierce lamina of leaf, jilalc 2, 182. 



(K) Galls small; leaf present and galls tend to cluster. 



