58 NEW YORK STATE MUSEUM 



form), the blade of the leaf dwarfed, curled and shriveled, on Q. p 1 a t a- 

 n o i d e s. Fig. 55. Beutm. '10, p. 118 



Cynipid. Noxious oak gall, Neuroterus noxiosus Bass. 

 Globose, hard, corky twig gall, diameter 18 to 20 mm on Q. alba. Osten 

 Sacken '62, p. 255 



Cynipid. Cynips juglans O. S. 

 Irregular, polythalamous, woody twig gall, length 10 cm, diameter 2.5 cm, twigs 

 not more than 4 to 6 mm in diameter. Cal. Trotter '11, p. 113 



Cynipid. A n d r i c u s sp. 

 Subglobose, lateral, grayish red or fulvous twig gall, the surface smooth, shining 

 and irregularly warty, diameter 8 to 10 mm. Mex. Trotter '11, p. 126 



Cynipid. ? Cynips sp. 

 Subglobose, polythalamous, solitary or clustered (if the latter more or less fused 

 basally) twig gall, diameter 10 to 15 mm. Mex. Trotter '11, p. 128 



Cynipid. ? C y n i p s sp. 



e A swelling surrounding the twig, especially at the base of the lateral shoots, often large, abrupt 



and woody; potato galls 

 (i) Not woody or a little woody fiber surrounding the larval cells .» 



Hemispherical, woody, polythalamous knots at the base of young shoots, diameter 

 12 to 18 mm, larval cells thin-walled, on Q. a 1 b a. Bassett '81, p. 76 



Cynipid. Loxaulus mammula Bass. 



Globose, hard knots, the surface rough, blackened, deeply and irregularly fissured, 



diameter nearly 2.5 cm, apical on the twig, on Q. ? v i r e n s. Bassett '90, 



P- 75 



Cynipid. Callirhytis ruginosus Bass. 

 Hard, woody knots sometimes terminal on shoots of oak sprouts, more often 

 enlargements at the base of small, lateral branches; terminal galls, diameter 

 2.5 cm, strawberry- shaped, on Q. c a s t a n e a. Bass '90, p. 76 



Cynipid. Callirhytis seminosus Bass. 

 Subglobose or reniform, irregular, rather thin-walled, monothalamous, smooth, 

 reddish twig gall, length 4 to 7 mm, diameter 3 to 5 mm. Mex. Trotter '11, 

 p. 126 



Cynipid. ? Cynips sp. 



(2) Woody fiber abundant, without hornlike projections 



Irregular, potato-shaped, polythalamous woody galls, diameter 1.8 cm, on 

 Q. alba. Fig. 54. Beutm. '10, p. 118 



Cynipid. Oak potato gall, Neuroterus batatus Fitch 

 Irregular, globose, frequently confluent twig galls, length 10 cm, diameter 3 cm, 

 on Q. nigra, Q. coccinea, Q. r u b r a and Q. i 1 i c i f o 1 i a. Fig. 57. 

 Bassett '63, p. 323 



Cynipid. Gouty oak gall, Andricus punctatus Bass. 

 Abrupt, irregular, potatolike twig or branch swellings, length 10 to 20 mm, 

 diameter 8 mm, onQ. virginiana. Ashm. '81 , p. XI 



Cynipid. Live oak potato gall, Andricus batatoides Ashm. 

 Hard, smooth, knotlike twig swellings, diameter 20 inm, on Quercus species. 

 Bassett '81, p. 112; '00, p. 320 



Cynipid. Andricus coxii Bass. 



