American Insect Galls: Thompson 55 



312. Eurosta reticulata. Solidago shoots. Apr. Hollows out l.aso of now growth aborting the 



shoot, making ail elongate, onioii-like gall, i)latc 10, 312. 



313. Rhopalomyia thompsoni. cf 9 . Soliilago. Apr. Flesh}' and elastic, succulent, irregu- 



larly ovate or globular. Cells near rind of gall, center usually clear, plate 10, 312. 



314. Cecidomyia. Solidago. Emerges late May. Small, l)ud-like, ovoid, hard-shelled gall; 



near ground in clusters usually, lateral. May be 313 above ground, plate 9, 314. 

 Rhopalomyia bulbula Felt. 



315. Eurosta. Solidago. SwelHng of new shoots occasionally aborting them; central cavity. 



Emerged June, plate 10, 315. 

 Eulrcta sparsa Wied. 



HACKBERRY (Celtis) 



56. Pachypsylla celtidis-mamma. Riley Canad. Entom. '83, fig. 7. Hackberry. Packard 



5 Rept. '90, June-Sept. R. I., plate 10, 56. 

 106. Pachypsylla c.-vesiculorum. Packard 5 Rept. '90 (n. sp.). Celtis. R. I. June. Small 



blisters on leaf. 



HAZEL (Corylus) 



195. Cecidomyia. Hazel. Mass. June. Elevations distorting leaf. Hairs thick and long, 



gland-tipped, crimson above and white below. Similar specimen found on poplar. 

 Lasiopleryx coryli Felt. 



196. Eriophyes. Hazel. Mass. June. Buds along, stems aborted so that leaf never grows 



and the bud becomes globular. 5 cm. in size, plate 11, 196. 

 Eriophyes taken at Nassau. 



HICKORY (Carya) 



11. Dactylosphaera depressum. Shimer '69, p. 389-390. Gall No. 4, 9. Carya. Mass. 

 June. 



Phylloxera depressa,. 



20. Phylloxera caryae-fallax. Riley '75, p. 118. Walnut, Dunce-cap. Mass. Packard '90, 



p. 323. June. Conical mass with apical tuft, plate 11, 20. 

 23. Fungus on leaf of hickory. Carya alba. Mass. June. Yellowish area above; white 



scurf below, plate 11, 23. 

 84. Phylloxera caryaecaulis. Fitch 1 Rept., p. 155-159. Carya, Mass., N. H. Late June. 



On ])etioles and main veins of leaves. Succulent, depressed, ovoid, with central 



pit. Dark green. Often confluent and utterly distorting the branch tips, plate 



11, 84. 



114. Cecidomyia holotricha. Hickory. Mass. Aug. Onion-shaped, on under side of leaf. 

 Variable in form, but the pendent center of inner chamber is constant. Golden 

 brown. Appears distinct from No. 242, but may he confused M-ith No. 256, plate 



12, 114. 



Caryomyia holotricha O. S. 



130. Phylloxera caryae-globuli. Packard '90, p. 322. Carya. Mass. Round, fleshy, thick on 



leaf. See No. 328, plate 12, 130. 



131. Cecidomyia tubicola. cf 9 . Carya. Mass. June July. Diameter 1-8 in. Central 



chamber and outer rampart, plate 10, 131. 

 Caryomyia tubicola O. S. 



194. Cecidom3ria. Petiole gall. Carya. Mass. June. Slight swelling both of petiole and 

 adjacent stem. 



