American Insect Galls: Thompson 9 



Holcaspis omnivora Ash. '85, p. VI- VII (Cijtnps), 9 , Q- virens, Q. cinerea, Q. catesbcei. 



Fla. Axillary, globular. 

 Callirhytis agrifolise Bass. '81, p. 53-54 {Cynips), 9 , Q. agrifolia, Cal. 



Dec. 3-4 in., globular. 

 Andricus pacificus Ash. '97, p. 118, 9 , Q- chrysolepis, Cal. 



6-16 mm., pithy, globular. 

 Andricus cinerosus Bass. '81, p. 110-111 {Cynips), 9, Tex. 



3-4 in., globular. 

 *Amphibolips fuliginosa Ash. '85, p. VII, VIII {Cynips), 9 , Q. laurifolia, Fla. 



3-4 in.; brown, corky. May be a leaf-gall. 

 Holcaspis fasciata Bass. '00, p. 328-329, 9, Q. ilicifolia, Conn.; Q. ilicifolia, Mass., Q. ilicifolia 

 and Q. rubra, R. I. 



Bark broken at base of gall (filbert shape), plate 1, 145. 

 Holcaspis rugosa Bass. '81, p. 100-101 {Cynips), 9, Q. ilicifolia, Conn., late fall: Gill. '89, Q. 

 prinus, INIich.: Ash. '87, Q. pritius and Q. bicolor, Fla.: Q. ilicifolia, Mass. 



Gall forms Aug. 9 Oct. Rugose, sessile, plate 1, 279. 

 H. globulins Fitch. 



Holcaspis Colorado Gill. '93, p. 210, 9 , Colo. Rugose. 

 Holcaspis rubens Gill. '93, p. 29-30, 9 , Colo., Oct. 20. 



10-14 mm. May be rugose. 

 Holcaspis corallinus Bass. '90, p. 66, 9 , Cal. 



3-4 in., globular with horn-like processes. 

 Holcaspis persimilis Ash. '97, p. 126-127, 9 , Q- nigra, Nov. 10. 



7 mm., rugose. Holcaspis type. 

 Holcaspis succinipes Ash. '81, p. XI-XII {Cynips), 9 , Q- virens, Fla. 



1-10 in., clustered, globular; not axillary. 

 Andricus wisliceni Ash. '97, p. 119, 9 , Q. wisliceni, Cal. 



Oct. 3-4 mm., globular. 

 *Andricus chrysolepidis Ash. '97, p. 119-120, 9 , Q. chrysolepis, Cal. 



Jan. 5-8 mm., ovate. Gall confused with Compsodryoxenus brunneus. 

 *(?)CjTiips mellaria Riley Amer. Ent. 3, p. 298, Q. undulata, Colo. 



Secretes honey, crimson. Pea-shaped. 

 Holcaspis perniciosa Bass. 



(b) Form more ovoid, witii a point at apex. 



Holcaspis duricoria Bass. '90, p. 64-65, 9 , Q. bicolor, Conn., Oct.-Nov.; = {?)Cynips q. mamma 

 Walsh '69, p. 102, 9 , Q. macrocarpa, 111.: Gill. '89, Q. bicolor, Q. macrocarpa, ]\Iich., 

 Oct.: Beut. Cat., Q. bicolor, N. Y.: Bent. '04, Q. platanoides, N. Y. : Harvard Coll., 

 Q. prinus, Ohio, Conn., D. C; Q. coccinea, Q. palustris, Mass., Q. sp., R. I. 

 Shape of haxel-nut, not axillary, plate 1, 59. 

 H. mamma Walsh. 



Holcaspis perniciosa Bass. '90, p. 68, 9 , Utah, 5-8 mm., ovoid. 



Holcaspis sileri Bass. '90, p. 67-68, 9 , Utah. Pointed, ovate, sessile. 



Holcaspis canescens Bass. '90, p. 66-67, 9 , Cal. Small duricoria. 



*Andricus perplexus Ash. '97, p. 122, 9 , Mo., Nov. 1. Globular, pointed, 5 mm., large cell. 



(c) Form more or less conical. 



Andricus coniferus Ash. '81, p. XXVII-XXVIII {Cynips), 9 , Q. phellos, Q. laurifolia. 



Fla. Solitary, axillar^y, sessile, low-conical. 

 Callirhytis crassicornis Ash. '97, p. 130-131, 9 : Like coniferus, but imbedded in twig, triangular 

 Andricus ventricosa Bass. '64, p. 681 {Cy7iips), 9, Q. ilicifolia. Conn. Spring. Q. alba, R. I.; 

 Q. tinctoria and Q. niger, Mass. 



Gall appears late May. Not axillary, conical, sessile, plate 1, 129. 



