Kinsey: Shtdies of Cynipidx 



67 



other varieties, only gradually converg-ent posteriorly, but approaching 

 so closely at the scutellum as to almost touch the median groove; 

 median groove fine, quite distinct for half the length of the mesonotum; 

 anterior parallel lines indicated for a short distance; lateral lines less 

 distinct than in other varieties; scutellum narrow, the median eleva- 

 tion distinct and so narrow as almost to form a ridge; abdomen of mod- 

 erate length, the second segment covering hardly more than half the 

 area; legs almost uniformly bright brownish rufous; areolet tending to 

 be small. 



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

 not radiantly striate; first two segments of the antennae almost black; 

 mesonotum distinctly more coriaceous; parapsidal grooves approaching 

 so closely at the scutellum as to almost touch the median groove; median 

 groove distinct for a third or more of the mesonotal length; anterior 

 parallel lines only indicated; second segment covering two-thirds of the 

 abdomen; areolet moderately small. 



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

 rieties; averaging smaller. 



RANGE.— D.C.: Washington (Osten Sacken). North Carolina 

 (Beutenmuller) . Pennsylvania? (Beutenmuller) . New Jersey: Ft. Lee 

 (Beutenmuller) . New York: Staten Island (Beutenmuller); Nyack 

 (Zabriskie in Amer. Mus.). 



TYPES. — Females, males, and galls at the Museum of Comparative 

 Zoology; adults at the Philadelphia Academy of Natural Sciences, and 

 in my collection; gall at The American Museum of Natural History. 

 Osten Sacken collector; from Washington, D.C. 



The insect of this variety is very distinct from any other 

 in the species. I have examined type material, and material 

 from Nyack and Staten Island, but the other localities listed 

 are published records from the Atlantic Coastal Plain, to 

 which region the variety may be confined. It probably occurs 

 only on the main body of the Coastal Plain which reaches its 

 main northern limit on Cape Cod, but also extends as reduced 

 remnants at river mouths further east on the Atlantic Coast 

 into Nova Scotia. 



Diplolepis radicum variety johnsoni, new variety 



FEMALE. — Shows the following characters in addition to those 

 common to all varieties of the species : Face rugoso-striate, more radi- 

 antly so about the mouth than in other varieties; first two segments of 

 the antennae with more piceous than in other varieties; mesonotum less 

 distinctly coriaceous, quite smooth and polished; parapsidal grooves 

 quite broad, only gradually convergent at the scutellum; median groove 

 long but very discontinuous; anterior parallel lines practically absent; 

 inedian anterior elevation of the scutellum less evident; second segment 

 covering one-half to two-thirds of the abdomen; abdomen very elongate; 

 legs bright brownish rufous, the femora and coxae deep rufous brown; 



