KEY TO AMERICAN INSECT GALLS 



109 



Saucerlike, flattened, clustered, monothalanious galls with a minute central 

 point, the edge slightly raised, closely resembles gall of Cecidomyia 

 p o c u 1 u m , diameter 1.5 to 2 mm, height .75 mm, on Q. u n d u 1 a t a . 

 Fig. 68, 13. Beutm. 'iid, p. 368 



Cynipid. Dryophanta discus Bass. 

 Fusiform, marginal, smooth, solitary fold, length 6 mm, diameter 2 mm, the 

 walls somewhat thickened, on live oak. Fig. 105 



Cal. Cynipid. Dryophanta sp. a257o 

 Ovate, pocket-shaped, marginal, pilose leaf fold, usually clustered, sometimes 

 single, length 4 mm, diameter 3 mm, on live oak. Fig. 106 



Cal. Cynipid. Dryophanta sp. 

 Ovate, pocket-shaped, marginal leaf fold with greatly thickened walls, solitary, 

 sometimes in pairs, length 5 to 8 mm. Cal. Trotter '11, p. 108 



Itonid. ? Diplosis silvestrii Trott. 



Fig. los- Dry- 

 ophanta sp., 

 a2570, enlarged. 

 ( Original) 



Pig. 106. D r y o p h a n t a sp. on live oak. Cal. (Original) 



Gall a folded leaf edge between serrations. PI. 8, fig. 5. Ent. News 19:349 



Itonid. Marginal fold gall, Itonida foliora Rssl. & Hkr. 

 Galls similar, possibly identical. Felt. '06b, p. 672 



Itonid. Cecidomyia erubescens O. S. 



(14) Galls composed apparently of crystalline matter; attached to the leaves 

 (a) Solitary, globular 

 Globose, pink, thick- walled leaf galls on the under surface, with 50 or 60 short, 

 blunt horns, diameter 9 to 18 mm, on Quercus sp. Bassett '90, p. 81 



Cynipid. Handsome oak gall, Andricus speciosus Bass. 

 Clustered, woolly, bright pinkish leaf galls, the wool crystalline, semitransparent, 

 diameter 3 to 8 mm, onQ. ? agrifolia, Q. dumosa, Q. doug- 

 1 a s i i . Bassett '00, p. 319 



Cynipid. Andricus crystallinus Bass. 



(b) Clustered, tubular 

 Tubular leaf gall, length 7 to 10 mm, narrow basally, open apically, yellowish, 

 the surface with numerous red spines, the interior divided by two horizontal 

 partitions, the basal and distal cavities empty, the latter open, on Q. o b t u - 

 s i 1 o b a . . Osten Sacken '61, p. 60 



Cynipid. Spined oak tube gall, Andricus tubicola O. S.^ 



1 See also, A . s p 1 c n d e ji s on p. 106 



