Kinsey: Studies of Cynipidce 



89 



almost solid; more porous tissue surrounding a cylindrical cavity extend- 

 ing from the base of the gall hardly more than half way to the tip, 

 with the larval cell in the apical part of the cavity. Singly or in 

 clusters, on twigs of Quercus chrysolepis. 



RANGE. — California: San Jacinto Mountains to Dunsmuir. 



Ashmead described the galls of this species as ''covered 

 with long, brownish wool", which is correct. But the rest of 

 his description of the gall, type galls which I have seen, and 

 gall material labelled dasydactyli in several collections, match 

 the galls from which I bred Hetercecus melanoderma. The 

 extent of Ashmead's confusion is indicated by his choice of 

 the name dasydactyli for this rather than for the true ''date- 

 seed" gall, melanoderma. The gall and insect both are most 

 nearly related to H. pacificus. One might take pacificus galls 

 to be older galls of this variety with the wool worn off, but 

 when the wool drops from dasydactyli it leaves the gall smooth 

 (unlike melanoderma), and showing the projecting base to 

 which the wool was attached (unlike pacificus) . 



Heteroecus dasydactyli variety dasydactyli (Ashmead) 



Andricus dasydactyli (adult only!) Ashmead, 1896, Proc. U.S. Nat. Mus., 

 XIX, p. 117. Dalla Torre and Kieffer, 1902, Gen. Ins. Hymen, 

 Cynip., p. 62; 1910, Das Tierreich, XXIV, p. 532. Fullaway, 1911, 

 Ann. Ent. Soc. Amer., IV, p. 349. Thompson, 1915, Amer. Ins. 

 Galls, pp. 10, 32. Felt, 1918, N.Y. Mus. Bull., 200, p. 72. Kinsey. 

 1920, Bull. Amer. Mus. Nat. Hist., XLII, p. 371. 



FEMALE. — Differs from the female of other varieties of the species 

 as follows: Parapsidal grooves extending half way or more to the pro- 

 notum, finely, not heavily rugose at bottom; median groove very dis- 

 tinct tho short at the scutellum; scutellum of uniform color, not 

 darkened in the fovese, foveas wholly but sparingly rugose; first abscissa 

 of the radius arcuate with only a slight suggestion of an angle; length 

 2.7-3.5 mm., averaging distinctly larger than in any other variety of thp 

 species. 



GALL. — Difi"ers from the galls of other varieties in being more 

 often long, elongate spindle-shaped, averaging 15.-30. mm. long by 7.- 

 12. mm. in diameter, often with a long, slender apex, less often curved 

 than in pygmxus ; usually singly on the twigs. 



RANGE. — California: Yosemite Valley, Placerville, Dunsmuir. 

 Probably occurs in the central Sierras north of El Portal, wherevei- 

 Q. chrysolepis occurs. 



TYPES.— Many females, in the U.S. National Museum; labelled 

 number 3063. 



Ashmead's adults were bred from January 18 to February 

 11, probably indoors. I obtained adults at some date after 



