Kinsey: Studies of Cyjiipid^e 



35 



other similar cases, misled me into an over-statement in a 

 previous paper (1920, Bull. Amer. Mus. Nat. Hist., XLII, p. 

 383) as to the lack of vitality of Cynipidse in general. 



Some of the most illuminating data I yet have on the ef- 

 fectiveness of the host in isolating varieties is that presented 

 under variety distinctus. 



Some of the varieties of this species show a median de- 

 pression of the scutellum much as in the genus Amphiholips. 

 Other varieties do not show this. An evolution of a generic 

 character has occurred within this single species. 



Callirhijtis rossi Kieffer (1903, Marcellia, II, p. 84, figs. 

 1, 2) is probably the same as one of the varieties described 

 for this species in this paper. The publication was made 

 without a more definite locality than "California", and with- 

 out a host determination, but with a host description which 

 best fits Quercus chrysolejns. I feel certain there must be a 

 mistake here, just as I do not believe Kieffer's eriophorus came 

 from WisUzenii as published. Until we can see types of rossi 

 it will not be possible to determine the variety it represents. 

 I am inclined to expect to find it a synonym of macnlipennis. 



Andricus pomiformis variety pomiformis (Bassett) 



Cyriips Q. pomiformis Bassett, 1881, Can. Ent. XIII, p. 74. 



Andricus pomiformis Ashmead, 1885, Trans. Amer. Ent. Soc, XII, pp. 

 295, 300, 303; 1887, Trans. Amer. Ent. Soc, XIV, p. 130. Ashmead 

 (in Packard) 1890, 5th Rpt. U.S. Ent. Comm., p. 108. Dalla Torre 

 and Kieffer, 1902, Gen. Ins. Hymen. Cynip., p. 64. Beutenmuller, 

 1904, Bull. Amer. Mus. Nat. Hist., XX, p. 24. Thompson, 1915, 

 Amer. Ins. Galls, pp. 8, 33. 



Callirhijtis p)omiformis Mayr, 1902, Verh. Ges. Wien, LII, p. 289. Dalla 

 Torre and Kieffer, 1902, Gen. Ins. Hj-men. CjTiip., p. 82. Felt, 1918, 

 N.Y. Mus. Bull., 200, p. 62. Fullaway, Ann. Ent. Soc. Amer., IV, 

 p. 371. 



CaUirhytis quercus-pomiformis Dalle Torre and Kieffer, 1910, Das Tier- 

 reich, XXIV, pp. 568, 803, 825. Fullaway, 1911, Ann. Ent. Soc. 

 Amer., IV, p. 355; 1912, Journ. N.Y. Ent. Soc, XX, p. 275. 



FEMALE. — Shows the following characteristics in addition to those 

 comnfion to all varieties of the species: Parapsidal grooves very largely 

 lost in the sculpturing, wholly rugose at bottom; no median depression 

 even indicating a median groove; anterior parallel lines fine, smooth, 

 continuous, fairly distinct; lateral lines rather prominent, distinctly 

 wider than in maculipenyiis ; mesopleurai with the smooth central area 

 wholly smooth and naked; foveas separated only by a very low rugose 

 area; areolet moderately small to very small; the cloud on the first 

 abscissa of the radius of moderate size, smaller than in macidiptennis. 



