American Insect Galls: Thompson 11 



(B) Cells small, numerous, massed in a cluster Ijeneath the fibres. 



Callirhytis operator O. S. '62, p. 256-258 {Cynips), d' 9 , Q. nigra, D. C: Bass. '00, p. 315, Conn., 



Bass. 73, Q. ilicifolia, Conn. : 0. S. '65, Q. ilicifolia, Q. paluslris, Conn. : Riley '73, p. 



5^19, Black oak; Q. ilicifolia, Mass., R. I.: Walsh '64, p. 639; Q. nigra, Q. paluslris, 



Q. ilicifolia. 111. 

 Gall appears in mid-May. Flies in June, plate 2, 169. 

 Callirhytis seminator Harr. '41, p. 399 (Cynips), fly, Q. alba, Mass.: O. S. '61, p. 69, cf 9 , Q. alba. 



D. C: Walsh '64, Q. alba, 111.: Ash. '87, Q. prinus, Q. bicolor, Fla., d" 9 , Juno, July: 



Beut. '04, Q. alba, N. Y.: Fitch 5 Rept., Q. alba, N. Y. Fly in July: Gill. '89, Q. 



alba, Mich. Fly in July: Cook '05, Q. alba, Ind.: Packard, Q. alba, Va. Fly June 



13; Q. alba, Mass., R. I. 

 Gall appears early June, plate 2, 8. Flies the last of June. 



IV. Gall Consisting of One or More Larval Cells or Capsules in a Leaf-Bud: 



1. Hard cell or cells surrounded ijy a number of modified leaves — 



(A) Cell surrounded by a few thread-like bodies. 

 Dryophanta pallipes Bass. '00, p. 327, cT 9 , Q- alba. Conn., spring. 



(B) Cell surrounded by a rosette of linear leaves. 



(?) Cynips frondosa Bass. '64, p. 688-689, Q. prinoides. Conn.; Harvard Coll., Md.: Ash.'96, p. 186 

 Mo.; Q. prinoides, Mass. Forms summer, emerges late May. 



Leaves quite long, not always linear, plate 3, 165. 

 Andricus foliatus Ash. '81, p. XII-XIII (Cynips), 9 , Q- virens, Fla. 



Leaves short, linear. 

 Andricus stropus Ash. '87b, p. 136, 9 , Q. obtusiloba, Fla. 



Mar. Leaves linear. 



(C) Several cells surrounded by a rosette of linear leaves. 



Andricus topiarius Ash. '87b, p. 136, 9 , Q. obtusiloba, Fla. 



Mar. 3-5 cells. 

 *(?)Cynips frondosa Walsh '69, p. 72-73, Burr-oak, 111.; White oak, Miss., plate 3, 165. 



2. Hard cell ill the bud. No circle of modified leaves — 



Dryophanta gemula Bass. '81, p. 104-105 (Cynips), <d 9 ,Q- prinoides. Conn., May; Mass. Late 



May. 

 Andricus calycicola Ash. '87, p. 141, 9 ?, Q- laurifolia, Fla. 



Falls to ground in winter. Feb. May be in acorn-cup also. 



3. Soft capsule in bud, no modified leaves — 



Neuroterus vesiculus Bass. '81, p. 97 (Cynips), d 9 ,Q. alba, Conn. Gill. '89, Q. bicolor, Q. macro- 

 carpa, Mich. Early May. Mass., May. 

 Visible capsule, plate 2, 160. 

 Dryophanta vesiculoides Ash. '97, j). 114, d 9 ,Q. obtusiloba, Mo., May 10. Visible capsule. 

 Neuroterus affinis Bass. '81, p. 103-104 (Cynips), cf 9 , Q. prinoides, Conn. Msible capsule. 

 N. vesiculus Bass. 



Andricus cinnamomeus Ash. '87b, p. 137, 9 , Q- parvifolia, Fla. A\n\ 



Single cell within bud (cone). 

 Andricus cellularius Gill '92, p. 247, 9 , Q. undulata, Colo. Late May. Cell within bud. 



