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NEW YORK STATE MUSEUM 



Twigs enlargement, abrupt basally, resembles that of E. m a c g i 1 1 i v r a y i 

 Rohw. '09, p. 24. 



Hym. Euura propinquus Rohw. 

 A mass of filamentous structures on the stem. Walsh '66, p. 227 



Acarid. Eriophyes aenigma Walsh 

 Apical, fusiform, beaked gall, length 2 cm. Fig. 26, pi. 11, fig. 5. Felt '06a, 

 p. 122 



Itonid. Beaked willow gall, Phytophaga rigidae O. S. 

 Reared from similar gall. Felt '156, p. 88 



Itonid. Rhabdophaga sodalitatis Felt 

 Twigs irregularly enlarged, galls i to 3 cm long. PL 12, fig. 2. Felt '156, p. 96 



Itonid. Rhabdophaga salicis Schr. 



Twig irregularly enlarged, gall i to 3 cm long, the stems between the buds 



dwarfed, giving a " wheat ear " appearance. PL 12, fig. 4. Felt '156, p. 88 



Itonid. Wheat ear gall, Rhabdophaga triticoides Walsh 



Fig. 41. Cecidomyia sp., two types of subglobular galls on 'poplar 

 leaves, the true producers unknown. (Original) 



Irregular, ovoid or subglobular galls, diameter i to 2 cm. Fig. 39. Felt 'i5e, 

 p. 105 



Itonid. Willow potato galL, Rhabdophaga batatus Walsh 

 Reared from same gall. Felt '156, p. 92 



Itonid. Rhabdophaga ramuscula Felt 

 Reared from same gall, dried. Felt 'o8e, p. 421 



Itonid. Asynapta saliciperda Felt 

 Nodular gall at base of twigs, length 8 mm. PL 11, fig. 9. Felt '156, p. 91 



Itonid. Nodule willow gall, Rhabdophaga nodula Walsh 

 Irregularly elongated, ovate, reddish brown, spongy twig gall, 10 to 20 mm long. 

 PL 3, fig. 7. Rohw. '09, p. 12 



Hym. Willow egg gall, Euura ovum Walsh 

 Subglobose galls, the surface scarred, diameter 4 mm. Fig. 40. Felt 'o8e, 



P- 370 



Itonid. Scarred willow gall, Phytophaga tumidosae Felt 



