410 
Indiana University Studies 
bright rufous, sometimes daiker, with at least the bases of the coxae 
black; the abdomen varying from entirely black to piceous with a small 
to a large rufo-piceous to yellow-rufous patch at base; the mesonotum 
largely naked, finely roughened; wings varying, from 0.17 to 0.23 of the 
body in length; rather small insects, 2.1 to 3.0 mm., most of the indivi- 
duals close to 2.5 mm. in length. Figures 377, 421. 
GALL. — Variable, but usually closer to the naked, spherical pezo- 
machoides than to the elongated, spiny wheeleri gall; the great majority 
of the galls of advena small, irregularly spherical, with the tips of each 
facet slightly elongate so the gall appears short-bristly but not spiny; 
on leaves of Quercus alba. Figures 319-320. 
FIG. 69. SOUTHERN HIGHLAND VARIETY OF 
C. PEZOMACHOIDES 
Probably hybrid of Canadian and Coastal Plain varieties brought together in Pleistocene. 
RANGE. — Kentucky: Pineville .(Kinsey coll.). 
Tennessee: Oakdale (types, Kihsey coll.). Columbia, Charleston, 
Tellicoe River near Madisonville, Clinch River near Maynardsville, and 
Tazewell (Kinsey coll.). 
North Carolina: Windsor, Moorhead City, Vanceboro, Henderson- 
ville, and Murphy (Kinsey coll.). 
South Carolina: Travellers Rest (Kinsey coll.). 
Georgia: Hartwell, Madison, Barnesville, and Henderson (Kinsey 
coll.). 
Largely restricted to the Cumberland Highlands, the Great Smokies, 
and the southern end of the Blue Ridge, scatteringly found eastward to 
the coast of the Carolinas and southward into Central Georgia. Figure 69. 
TYPES. — 332 females and many galls. Holotype and paratype fe- 
males and galls in the Kinsey collection. Paratype females and galls 
