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Indiana University Studies 



areolet of only moderate size; first abscissa of the radius slightly more 

 angulate than in other varieties. 



MALE. — Difters from the males of other varieties as follows: Face 

 somewhat radiantly striate about the mouth; first two antennal segments 

 often more piceous; parapsidal grooves rather close together at the 

 scutellum ; median gi'oove discontinuous ; anterior parallel lines prac- 

 tically absent; areolet of only moderate size. 



GALL. — Does not difi'er particularly from the galls of other va- 

 rieties, averaging smaller. 



RANGE. — Massachusetts : Gloucester. Not improbably occurs thru- 

 out more northern New England. 



TYPES. — 24 females, 7 males, 1 gall. Holotype female, paratype 

 adults, and gall at the Boston Society of Natural History; paratype 

 adults at The American Museum of Natural History, the U.S. National 

 Museum, and with the author. Labelled Gloucester, Massachusetts; 

 May 30; C. W. Johnson collector. 



I am indebted to Mr. C. W. Johnson, of the Boston Society 

 of Natural History, for permission to describe this variety 

 from material of his collection. 



Insects emerged from a gall collected at Gloucester, Massa- 

 chusetts, on May 30. 



Probably no two localities in the United States have been 

 more thoroly collected for Cynipidse than eastern Massa- 

 chusetts and the neighborhood of New York City. It is no 

 credit to the taxonomy we have been doing to have ignored the 

 evident differences between material from the two regions. 

 No two adjacent varieties of this species are more distinct 

 than radicum and johnsoni. I have not yet worked out the 

 extent of the cynipid fauna of eastern Massachusetts; it is 

 probably the same as the fauna of most of more northern New 

 England; variety radicum is very probably confined to the 

 remnants of the old Atlantic Coastal Plain. 



Diplolepis radicum variety utahensis (Bassett) 



Rhodites Utahensis Bassett, 1890, Trans. Amer. Ent. Soc, XVII, p. 62. 



Rhodites utahensis Cockerell, 1900, Ent. Student, I, p. 10. Dalla Torre 

 and Kietfer, 1902, Gen. Ins. Hymen. Cynip., p. 79; 1910, Das Tier- 

 reich, XXIV, pp. 715, 841. Beutenmuller, 1907 (in small part only), 

 Bull. Amer. Mus. Nat. Hist., XXIII, p. 649, pi. XLVII, fig. 6. 

 Thompson, 1915, Amer. Ins. Galls, pp. 21, 46. Felt, 1918, N.Y. 

 Mus. Bull., 200, p. 144, fig. 148 (6). 



FEMALE. — Shows the following characters in addition to those 

 common to all varieties of the species: First two segments of the an- 

 tennae bright piceo-ruf ous ; mesonotum obscurely punctate; parapsidal 

 grooves quite broad, quite suddenly curving inward and consequently 



