American Insect Galls: Thompson 15 



Amphibolips sculpta Bass. '63, p. 324 (Cynips), d' 9 , Q- rubra, Conn. Earlj^ July. Walsh '64, 

 Red oak: Gill. '89, Q. rubra, Q. coccinea, Iowa, Mich. Fly, late June: Cook '0.5, p. 

 825, Q. rubra Ind. : Beach '95, Iowa: 

 Q. rubra, Mass. Fly, late June. Gall forms early June. Large size, plate 4, 188. 

 A. nubilipennis. 

 Phylloteras rubinus Gill. '89, p. 215, 221 (Biorhiza), 9 , Q. alba, Mich. 



Fall. 2-3 mm. in diameter. 

 Amphibolips racemaria Ash. '81, p. XXVI (Cynips), 9 , Q- laurifolia, Fla. 

 Forms April, May. Mid-May. 



(G) Small, solid, fleshy galls loosely attached to the leaf. 



Andricus rugosus Ash. '81, p. XVIII-XIX (Cynips), cf 9 , Q. laurifolia. Fla. Late April. 



Hemispherical, hard, fibrous. 

 Sphaeroteras mellea Ash. '87, p. 138 (Biorhiza), 9 ,Q- parvifolia, Fla. 



Feb. Fleshy, often clustered. 

 Biorhiza. 



Acraspis compressum Gill. '91, p. 197-198, 9 , Q. rubra, Iowa. 



On ground over winters. 2-3 mm. White, wax-like in texture, plate 4, 78. 

 Philonix. 



( H) Moderate-sized, hard galls, looselj^ attached to vein below leaf and with a facetted 

 or spiny surface. 



(a) Surface facetted. 



Acraspis pezomachoides 0. S. '62, p. 250 (Cynips), 9 , Q- alba, Md.; = (?) Cynips q. pisum Fitch 5 

 , Kept., p. 818-819, Q. alba; 0. S. '61, p. 53, D. C; 0. S. '65, pisu7n; = 9 pezoma- 

 choides: Beut. Cat., Q. alba, N. Y. : Cook '05, Q. alba, Ind.: Harvard Coll., Mass.: 

 Packard, p. 113, Q. alba. Mo. 

 Q. alba, Q. bicolor, Mass. Fly late Sept. Gall forms June, plate 3, 33. 

 Philonix. 



Acraspis macrocarpas Bass. '90, p. 84-85, 9 , N. Y., Mich., Ohio, Iowa. Autumn. Gill. '89, p. 

 221, Q. macrocarpa, Mich. 9 Oct.: Beach, Iowa: Gill. '93, Q. macrocarpa, Iowa. 

 Philonix. 

 Acraspis undulata Gill. '93, p. 28-29, 9 , Q- undulata, Colo. Fly like macrocarpce. 



Philonix macrocarpce. 

 Biorhiza hirta Bass. '64, p. 687-688 (Cynips) 9 , Q. montana, Conn.; =0. S. '62, p. 254, Q. prinos, 

 Md. (see 0. S. '65, p. 378): Beut. Cat., Q. monticola N. Y. Like C. pisu7n. 

 Philonix. 



(b) Facets of the surface pointed or spine-tipped. 



Acraspis echini Ash. '87, p. 140, 9 , Q- bicolor, Fla. Nov. Spine-tipped. 



Philonix. 

 (?) Cynips prinoides Beut. Cat., p. 257-258, pi. XI, fig. 6, 9 , Q. prinoides, N. J. Aug.-Sept. ' 

 Single cell, facets pointed. 



Philonix. 



' (c) Spines of the facets long. 



Acraspis erinacei Walsh '64, p. 483-484 (Cynip.s), Q. alba. 111.: Gill. '89, p. 186, Q. alba, :\Iich, 

 Fly in Nov.; Gill. '96, p. 94, Iowa, N. Y.: Beut. Cat. '04, Q. alba, N. Y.: Cook '05. 

 Q. rubra, Ind.: 0. S. '73, Colo. 

 The fly has apparently never been described. It was assigned to this genus by Mayr 

 '81, p. 30. (Ash. '87, p. 140, calls it "Acraspis erinacei.") 

 Philonix. 



