Kinsey: Gall Wasp Genus Cynips 
381 
(bright rufous in some hybrids), the pronotum laterally and the meso- 
pleuron entirely black or with touches of dark rufous; the legs dull 
rufous and piceous, darkest basally; the abdomen entirely black, or 
sometimes piceous or dark rufo-piceous basally; the mesonotum largely 
naked, coriaceous to smooth and polished posteriorly; more roughened 
anteriorly; wings averaging about 0.15 of the body in length; small 
insects, 1.5 to 3.0 mm. in length but averaging nearer 2.0 mm. 
Hybrids with wheeleri are common on all boundaries of the range, 
and these show many rufous areas, especially on the thorax, but usually 
they retain the dark head, antennal, and abdominal coloration. Figures 
374, 417. 
GALL. — Known from both the naked and spiny forms, the spiny 
galls more common in the heart of the range, and probably in pure 
strains; on the leaves of Quercus alba. 
RANGE. — New Hampshire: Exeter and Alton Bay (incl. hybrids 
with erinacei, Mrs. D. Tenney in Kinsey coll.). 
Massachusetts: Framingham (hybrid with pezomachoides, C. A. 
Frost in Kinsey coll.). Forest Hills (hybrids with pezomachoides; Kin- 
sey coll.). Sherwood (galls, C. A. Frost in Kinsey coll.). Melrose 
Highlands (galls, Kinsey coll.). Magnolia (gall, C. H. Clark ms. in 
Gray Herb.). 
Pennsylvania: Meadville (incl. hybrids with derivatus, Roy Wilson 
in Kinsey coll.). Highspire (incl. hybrids with pezomachoides, in U.S. 
Nat. Mus.). 
Ohio: Monterey, Coolville, and Chillicothe (incl. hybrids with 
ozark and derivatus; Kinsey coll.). 
Maryland: Oakland (Kinsey coll.). 
West Virginia: Parkersburg and Wolf Summit (incl. hybrids with 
ozark; Kinsey coll.). 
FIG. 65. SUB-CANADIAN VARIETY OF C. PEZOMACHOIDES 
Southern extensions of range probably effected during Pleistocene glaciation. 
