Amehican Insect Galls: Thompson 



19 



(a) Solitary; globular. 



*Cynips echinus O. S. 70, p. 56, 9 , Q. agrifolia, Cal. 



Monothalamous, facetted, scarlet. ("Facets of the surface pointed or spine-tipped. ) 



Possibly might be assigned to VHb, p. 15. 

 Andricus speciosus Bass. '90, p, 81, 9 , Cal. 3-4 in. crystalline. 

 Andricus crystallinus Bass. '00, p. 319-320, 9 , Q. agrifolia (?), Cal. 

 Conical; of crystalline fibers: see O. S. echinus 



(6) Clustered; tubular. 

 Andricus tubicola O. S. '61, p. 60 {Cynips), 9 , Q. oUusiloba, D. C. Oct. (See 0. S. '62, p. 250.) 



(0) Small, fleshy galls clustered on leaves. 

 (a) Split mid-vein in their growth. 



(?)Cynips deciduffi Bass. '64, p. 689, Q. rubra, Conn.: O. S. '65, p. 360, '61, p. 256, Q. bicoJor, D. C; 



Q. ilicifolia, Q. rubra, Q. coccinea, Mass.; Q. rubra, R. I. Seed-like, plate 3, 77. 

 Andricus piperoides Bass. '00, p. 314-315, 9 , Q. rubra. Conn. Summer second year before 

 Spring. 



Red oaks, Mass. Fuzzy, globular, plate 5, 286. 



(6) Do not split mid-vein in growing. 



Cynips dimorphus Gill. '89, p. 186, 221, Q. bicolor, Q. macrocarpa, Q. prinus. Mich. (C. 



dimorphus Ash. Mss.) 

 Fly not described. Gall described. 

 Zopheroteras vaccinii Ash. '87, p. 136-137 (Acraspis), 9 , Q. oUusiloba. (Gall Aug.-Dec.) Fla. 



Over winter, Feb.; =0. S. '62, p. 255, Q. oUusiloba, D. C. 



Urn-shaped gall. 

 Cynips nigricans Gill. '89, p. 217-218, 221, 9 , Q. foicoZor, Mich. 



Clustered below mid-vein. (Internal structure not given.) 



(P) Galls attached to leaves and covered with woolly fibers, 

 (a) Small cells each with a separate crown of wool. 



Neuroterus minutissimus Ash. '85, p. VII (Cynips), 9 , Q. virens, Fla. 



Spring. 

 Neuroterus exiguissimus Bass. '00, p. 332-333, 9 , Q. alba, R. I., Mass., Conn. 



Q. alba, Mass. Over winters. In row along veins, plate 5, 303. 

 N. floccosus Bass. 



(6) Small, seed-like cells in groups and covered l)y wool. 



Andricus flocci Walsh '64, p. 482-483, (Cynips), 9, Q. alba (?) 111. Winters; =C!/nips ,j. lana 

 Fitch 5 Rept., p. 814-816, fig., fly (Synergus) Q. alba, N. Y.: O. S. '61, Q. alba, Q. 

 oUusiloba, D. C: Beut. Cat. '04, Q. alba, N. Y.: Gill. '96, Iowa: Gill. '89, Q. alba, 

 Q. macrocarpa, Iowa, Mich. Fly in March: Cook '05, Q. rubra. Q. alba. Ind.: Bcacii 

 '05, Iowa: Harvard Coll., Q. alba, Conn., N. II. 

 June, Mass. Cells erect beneath the wool. Q. alba, R. I., Mass. Gail winters, 

 plate 5, 1.50. 



Andricus lanigerus Ash. '81, p. XIII-XIV (Cynips), 9 , Q- virens, Fla. 

 2-6 cells erect. (Otherwise like A. flocci.) 



