American Insect Galls: Thompson 21 



Neuroterus pallidus Bass. '90, p. 88, cf 9 , Q. bicolor, Conn. 



Solitary or clustered; 2 mm., globular. 

 Neuroterus vernus Gill. '90, p. 22, 9 , Q- macrocarpa, Iowa. 



Aments swell; galls fuzzy. See page 12. Gall on cap.sules. Fly, May, June. 

 Andricus pruinosus Bass. '00, p. 311, 9 , Q. oUusiloba, Conn. 



Small, hollow cells like .4. utriculus galls. (See page 18.) 

 Dryophanta palustris O. S. '6i, p. 62, cf' 9 . 



Succulent, hollow; free central kernel. (See page 14.) 

 Andricus congregatus Ash. '97, p. 120, 9 , Q- chrysolepis, Q. axjnfolia, Cal. 



2x4 cm. Irregular, polythalamous, rugose. (See page 8.) 

 Andricus turneri Ash. '81, p. XVI {Cynips), 9 , Q. aquatica, Fla. 



Apr. 28. Triangular, 2 celled kernels, clustered and very woolly. (Resembles sem- 

 inator.) 

 *Ampliibolips trizonata Ash. '97, p. 125-126, cf 9 , Ariz. 



June. Globular, pithy Oak-apple. "Said to grow on the aments." 



VII. Galls of the Fruits: 



1. Galls of the acorn — 



Andricus perditor Bass. '00, p. 313-314, 9 , Q. ilicifolia, Conn. 



Q. ilicifolia, Mass. Acorn aborted and becomes a gall, plate 4, 247. 

 Callirhytis fruticola Ash. '97, p. 131-132, 9 , Apr. 5; =Murdtfelt Insect Life, 6, p. 322, Q. lincloria, 

 Mo. 



Cells in pulp of acorn. 



2. Galls of the acorn-cup (cupule) — 



Callirhytis operatola Riley '73, p. 519, (Mss.), Opposite sex C. operator: Bass. '73, p. 91, Bass. 

 '00, p. 315-316, 9 , Q. ilicifolia, Conn. 

 Q. ilicifolia, Mass. Between cup and acorn. (See C. operator, page 11.) 

 (?)Cynips glandulosusRiley '77, p. 577-578, Q. alba, Q. prinoides,Q. michauxii,Q.prinus,Q. bicolor, 

 Q. muhlenbergii. Pa., Mo. Packard, Pa. 

 Q. prinoides and Q. alba, Mass. In cupule; seed keriiel, plate 4, 278. 

 Amphibolips prunus Walsh '64, p. 104, note, figs. 80 and 81 {Cynips), 9 , Q. nigra, Q. rubra, 111. 

 Aug., Sept. Apr. often of second year. Beut. '04, Q. rubra, N. Y.: Gill. '89, Q. 

 nigra, Iowa, Q.rubra, Mich.; fly, June 25: Lintner '88, N. Y.: Beut. Cat., Q. rubra, 

 Q. tindoria, N. Y.: Cook '05, Ind. 

 Q. rubra, Mass., R. I. Fleshy on cupule, plate 2, 304. 

 Amphibolips gainesi Bass. '00, p. 322, 9 , Q. tindoria (?), Tex. Like prunus. 

 (?) Cynips juglans 0. S. '62, p. 255-256, Q. alba (?), Md., D. C. Like prunus. 

 Andricus calycicola Ash. '87, p. 141, 9 , Q. laurifolia, Fla. Winters. Feb. 

 Hard capsule usually in bud. (See page 11.) 



GALLS ON ROSE (7?o.s«)_ 

 I. On the Roots: 

 Rhodites radicum 0. S. '63, p. 42, 46-47, cf 9 , Conn.; =Cynips scmipicca Harris '41, p. 400,^ 9 

 (Penclisles), Mass.: Beut. '04, N. Y.: Harvard Coll., R. Carolina, Mass.: Gill. '92, 

 p. 247, Colo. : Cook '05, Rosa Carolina, Ind. : Webster '92, Ohio : Saunders '74, Canada. 

 Tribalia batatorum Walsh '64, p. 470-472, 9 , "Potato (?)." 111. Provanchcr (Add. and Corr., 

 p. 161). 

 Fleshy, polythalamous gall. 

 Rhodites radicum O. S. 

 ♦Rhodites utahensis Bass. '90, p. 62-63, cf , Utah. 



May be only near ground and not beneath soil surface. 



