356 
Indiana University Studies 
Acraspis villosa Dalla Torre, 1893, Cat. Hymen. 2: 64. Dalla Torre and 
Kieffer, 1902, Gen. Ins. Hymen. Cynip,: 58. Dalla Torre and Kief- 
fer, 1910, Das Tierreich 24:410, 639, 816, 832. Weld, 1922, Proc. 
U.S. Nat. Mus. 61 (18) : 10, 13. Weld, 1926, Proc. U.S. Nat. Mus. 
68 (10): 58. Weld in Leonard, 1928, Ins. N.Y.: 971. 
Philonix villosus Felt, 1906, Ins. Aff. Pk. and Woodland Trees 2: 713. 
Philonix villosa Beutenmiiller, 1909, Bull. Amer. Mus. Nat. Hist. 26: 249, 
pi. 43 figs. 8, 9. Felt, 1918, N.Y. Mus. Bull. 200: 94, fig. 89 (8, 9). 
FEMALE. — Close to the varieties alaria and calvescens, distin- 
guished from variety consocians only in being more slender and gen- 
erally lighter in color. Head and thorax bright rufous with some black, 
the abdomen bright rufous with much piceous to black on the posterior 
half; head distinctly wider than the thorax, very finely, irregularly 
rugose; the thorax much reduced, rather slender, two-thirds again as 
long as wide; the parapsidal grooves nearly obliterated; scutellum 
rather smooth with a not heavy punctation, anteriorly depressed to 
form the undivided, poorly defined foveal groove; the ridge between the 
scutellum and the rest of the mesonotum only very poorly indicated; 
mesopleuron punctate and very hairy; abdomen enlarged, rather elon- 
gate, entirely hairy on the sides of segments 2 to 5, not at all produced 
dorsally, the second segment covering a half to two-thirds of the whole 
abdomen; the wings much reduced but relatively broad, 0.30 of the 
body in length, reaching at most one-quarter of the way along the 
second abdominal segment, with only the subcosta and basalis defined; 
length 3.2 to 4.0 mm. Figures 365, 409. 
GALL. — Mature gall straw-yellow, staining browner in color; up 
to 13.0 mm. in diameter, the spines up to 2.0 mm. in length, rather 
flexuous, slender; the whole gall appearing as a dense mass of coarse 
and tangled hairs; on the leaves of Quercus macrocarpa. 
RANGE. — New York: Medina (acc. Weld 1926). Seneca Lake 
(Dudley in Cornell Univ., acc. Weld 1926). Ithaca (acc. Weld 1928). 
Michigan: Agricultural College (acc. Gillette 1889). 
Indiana: Crawfordsville (E. C. Stout in Kinsey coll.). Rogers in 
Pike County (gall, Kinsey coll.). 
Illinois: Evanston and Winnetka (acc. Weld 1926). Pana (Kin- 
sey coll.). 
Minnesota: Minneapolis (J. S. Benner in Kinsey coll.). 
Iowa: Ames (types, Gillette coll.). 
Kansas: Manhattan (thru C. V. Riley; in U.S. Nat. Mus.). Riley 
County (Marlatt in U.S. Nat. Mus., Kans. Agric. Coll., and Kinsey 
coll.) . 
Probably restricted to the range of Q. macrocarpa in the more 
northern Middle West, from northeastern Kansas into New York State. 
Figure 59. 
TYPES. — 8 females and galls. Holotype and 4 paratype females 
and galls in the U.S. National Museum; 3 paratype females in the 
Philadelphia Academy; type galls in the Museum of Comparative Zool- 
