12 



Indiana University Studies 



more often not completely filled, the tissue whiter; galls more often 

 smaller and in compact clusters, thus becoming greatly compressed and 

 flattened basally; maximum length observed 92. mm. On Qiiercus gar- 

 ryana. 



RANGE. — North of the other varieties. California: Yreka. Ore- 

 gon: Ashland, Grants Pass, Roseburg, Junction City, Canby; Eugene 

 (Swezey). Washington: Olympia (Gillette); White Salmon. 



TYPES. C. P. Gillette collection (?). 



The adult is distinguishable from the adult of variety 

 californicus primarily in color, but this difference is not as 

 insignificant as it might seem for it is constant and is cor- 

 related with a physiologic difference shown in the gall, and 

 a very distinct geographic range and (consequently?) dis- 

 tinct host. Swezey reported live adults cut from galls in 

 July; Gillette had adults emerge thru November; I failed 

 to find young galls yet developing on April 15. Very prob- 

 ably an alternate generation occurs with a life period of at 

 least six months. 



Andricus californicus variety fructiformis, new variety 



FEMALE. — Shows the following characters in addition to those 

 common to all varieties of the species: Color almost entirely brownish 

 rufous, only slightly darker than in variety californicus, sometimes 

 blackish on the anterior parallel and lateral lines and in the fovese; 

 whole antennae almost black, distinctly longer than in the other varieties, 

 not particularly enlarged terminally, with 15 distinct segments; parap- 

 sidal grooves moderately narrow^ at the scutellum, finer anteriorly, but 

 distinct to the pronotum ( ! ) ; scutellum with quite distinct f oveae, wholly 

 smooth laterally, separated anteriorly by a fine ridge; length 3.0-3.7 mm. 



GALL. — Differs from the galls of other varieties of the species as 

 f ollow^s : Color always red or reddish brown, very brilliant apple red 

 when fresh; internally with large cavities, the little tissue which it con- 

 tains, other than the woody core, being brittle, dark, resinous, appearing 

 fused; galls usually small and monothalamous, tho the maximum 

 length observed is 90. mm. On Quercus dumosa. 



RANGE. — South of the other varieties. California: Descanso, 

 Alpine, Fallbrook, Sorrento, El Toro, Upland, Pasadena, Paso Robles. 



TYPES. — 12 females, 30 galls. Holotype female, paratype females, 

 and galls at The American Museum of Natural History; paratype 

 females and galls at the U.S. National Museum, Stanford University, 

 and with the author. Galls at the Museum of Comparative Zoology, 

 and the Philadelphia Academy. Labelled El Toro, California; Febru- 

 ary 14, 1920; Q. dumosa; Kinsey collector. 



Morphologically the insects of this variety are remark- 

 ably similar to those of other varieties except in color and 



