Kinsey: Studies of Cynipidx 



S7 



yellowish brown. Internally similar to compacted sawdust, with a cylin- 

 drical central cavity extending from the base almost to the tip. Scat- 

 tered, on twigs of Quercus chrysolepis. 



RANGE. — California: Yosemite (Trotter); El Portal, Pasadena, 

 Upland, San Bernardino, San Jacinto Mountain. 



TYPES. — Berlin Museum? Cotypes at Pomona College. Material 

 from the same collector (Baker), and the same locality (Claremont), 

 in The American Museum of Natural History, and in Stanford Uni- 

 versity. 



I have seen the Pomona College cotypes, and the Baker 

 material in The American Museum of Natural History, and 

 they agree with my Upland material. Indeed, my locality, 

 Upland, and Baker's Claremont, are nearby towns neither of 

 which have Quercus chrysolepis, but these are post office 

 names for very probably the same region in the nearby moun- 

 tains. 



Most of the adults were emerged in the San Bernardino 

 mountains on January 31, 1920, and at Upland on February 

 3 ; most of the insects were not yet emerged at Pasadena on 

 February 7, and adults were still alive in the galls at El Portal 

 on March 21. As usual, emergence is later in more northerly 

 localities. 



Both the galls and adults of this species show considerable 

 variation. The above description applies to an average of the 

 material from Upland, that is, near the type locality. The 

 areolet varies from small to large, the fovese are smooth or 

 sparingly rugose or completely, closely rugose; the parapsidal 

 grooves extend further in some individuals than in others. 

 The galls vary from smooth to very rough or tuberculate, the 

 tip arises very abruptly or only gradually from the body of 

 the gall, the greatest diameter comes at the middle or nearer 

 the apex of the gall. All of these variations occur at each of 

 the localities : San Bernardino mountains, San Jacinto moun- 

 tains, Upland, Pasadena, El Portal. I cannot perceive any 

 regularity in the concurrence of characters, and have not 

 yet discovered any tendency for a single type to occur in 

 the San Bernardino range, contrary to the usual situa- 

 tion. Galls from Placerville, and part of the material 

 from El Portal, may belong to a northern variety of this 

 species. Some adults from Placerville may belong to a north- 

 ern variety of hakeri, but unfortunately these galls and adults 

 were not definitely connected in the breeding, and I shall need 

 to see more material before deciding the point. 



