6 Cynipidae 



CalHrhytis tuberosa Bass. '00, p. 311, cf 9 , Q. ilidjolia (?), Conn.; Q. ilicifolia, Mass.: Bass. '07, 

 Q. imbricaria, Ohio. 

 Similar to last, but smaller. 



4. The twig js swollen, dwarfed or distorted into a more or less club-shaped, polythala- 



mous gall: a club-gall — ■ 



Neuroterus batatus Fitch 5 Kept., p. 810 (Cynips), 9, Q. alba, N. Y., plate 1, 76: Bass. '64, p. 

 684, cf 9 , Q. alba, Conn. ; = (?) Cy7iips tuber. Fitch, p. 806, 9 ( = Ceroptres) ; = 0. S., 

 p. 61 (see 0. S. '65, p. 353-354): Beut. Cat. '04, Q. alba N. Y.: Bass. '77, Q. bicolor: 

 Bass. '73, Q. bicolor; Q. alba, Q. palustris, Mass. 

 Old wood. May. Spring, June. 

 Neuroterus consimilis Bass. '00, p. 335, d" 9 , Q. alba, Conn. 



Mid-summer. Like tuber. 

 Andricus (?) floridanus Ash. '87b, p. 137, cf 9 , Q. parvifolia, Fla. 



Suggests brown fungus near ground. 

 Neuroterus noxiosus Bass. '81, p. 108-109 {Cynips), d'9 ,Q. bicolor, Conn.: Beut. Cat. Q. bicolor, 

 N. Y.: Beut. '04, Q. platanoides, N. Y.: Gill. '89, Q. bicolor, Mich.: Q. alba, Q. 

 palustris, Mass., R. I. 

 Old wood. Brood spring, plate 4, 118. Autumnal variety only; may not be at end 

 of twig, but surround it (see p. 13). 

 *Dryophanta longicornis Bass. '00, p. 327, cf 9 , Q. obtusilobaf- Conn. 



Moderate enlargements. (May not be from the gall described.) 



5. A swelling surrounding a twig, especially at the base of lateral shoots, often large, 



abrupt and woody: potato-galls — 



(A) Not woody or but little wood-fibre surrounding the larval cells. 



Loxaulus mammula Bass. '81, p. 76-78 (Cynips), d' 9 , Q. alba, Conn. 



July. Cells under bark at base of twigs. Q. alba, Mass. 

 CaUirhytis ruginosus Bass. '90, p. 76, 9 , Q. virens (?), N. Mex. (suttonii). 



Surrounding substance hard knob, cellular, not woody. 

 CaUirhytis seminosus Bass. '90, p. 76-77, 9 , Q. castanea (?), Ohio. 



Cells very numerous. 



(B) Woody fibre abundant. 



CaUirhytis punctatus Bass. '63, p. 323-324 (Cynips), 9, Q. rubra, Conn.; = Cynips q. podagroe; 

 Walsh '64, p. 491-492, Q. tinctoria, 111.: Gill. '89, Q. rubra, Mich.: Harvard Coll., 

 Red and Black oaks, Mass., Conn., N. Y.; Q. marylandica, N. Y.: Beut. Cat. Q. 

 nigra, Q. rubra, Q. coccinea, Q. ilicifolia; Beut. '04, Q. marylandica, Q. coccinea, Q. 

 rubra, N.Y.; Q. rubra, Q. nigra, Mass. 

 April. Abrupt woody swelling, plate 1, 72. 

 *Andricus batatoides Ash. '81, p. X-XI (Cynips), 9 , Q. virens, Fla.; =0. S. '62, p. 259, D. C. 



Abrupt swelling. 

 Andricus coxii Bass. '81, p. 112-113 (Cynips), 9 , Quercus sp., Ariz.; Bass. '00, p. 320, 9 . 



Hard swelling. 

 Compsodryoxenos maculipennis Ash. '97, p. 129, 9 , Q. virens, Ariz. 



May 9-19. Like A coxii. 

 Andricus frequens Gill. '92, p. 247-248, 9 , Q. undulata, Col. 



May 10. Dense, corky enlargements. 

 Andricus meduUae Ash. '85, p. VIII (Cynips), 9 , Q. cinerea, Fla. 

 Gradual enlargement of twig. 



