44 



Indiana University Studies 



sometimes spectacularly so ; cubitus usually not reaching the basalis, the 

 tip curved downward toward a point below the mid-point of the basalis ; 

 radial cell closed; first abscissa of the radius arcuate-angulate, heavily 

 but limitedly infuscated, usually without much of a projection. 

 LENGTH: 3.7-4.7 mm. 



GALL. — Elongate stem swelling. Polythalamous. Large, elongate, 

 oval to spindle-shaped, averaging 25. mm. wide by 50. mm. long; large 

 specimens scarcely greater in diameter will reach 110. mm. in length; 

 covered with bark of natural color. Internally hard and woody, only 

 the peripheral tissue being less compact than the normal stem wood; 

 larval cells toward the center of the gall, oval, 3. by 5. mm., tissue 

 almost not at all distinct from the rest of the wood; exit holes upon 

 aging show a distinct, smoother area on the bark. On smaller stems 

 of Quercus chrysolepis. 



RANGE. — California: San Jacinto Mountains to Auburn and Ukiah. 

 Probably wherever Quercus chrysolepis occurs. 



This species was published very recently. The manuscript 

 had been prepared a year previously, and at the time I did 

 not recognize the several varieties represented by my mate- 

 rial. In presenting these varieties it seems desirable to re- 

 publish the specific description in order that it may be more 

 available for comparisons. At the same time some correc- 

 tions have been introduced, notably the consideration of the 

 radial cell as closed, and of the second segment of the abdomen 

 as short, with the third segment fully as long as the second, 

 instead of taking the second to be long with a more or less 

 definite division. 



The variation shown by the species is not great, and is so 

 confused by an unusual amount of individual variation that it 

 has been difficult to define varietal differences. I have not yet 

 been able to separate the San Bernardino material as the dis- 

 tinct thing we might expect it to be. This may be due to the 

 fact that I collected all of my material of this species at the 

 lower elevations < in the San Bernardinos, instead of at the 

 higher elevations which have given the more characteristic 

 things from this range. It is interesting to find the Ukiah 

 material belonging to the best defined variety. The galls of 

 all varieties are much alike. 



The wing venation in many individuals of this species 

 shows the most unusual abnormalities I have ever seen in 

 Cynipidse. Specimens show the first abscissa of the radius 

 out of line with the second intercubitus ; or a vein between the 

 second abscissa of the radius and the cubitus parallels the 

 second intercubitus, or joins the second intercubitus; in sev- 



