Kinsey: Gall Wasp Genus Cynips 
379 
Probably restricted to an area extending from southern Missouri 
and Arkansas, eastward into West Virginia and northward into parts 
of Illinois and western Indiana. Figure 64. 
TYPES. — 173 females, many galls. Holotype and paratype females 
and galls in the Kinsey collection. Paratype females and galls in the 
Museum of Comparative Zoology, the U.S. National Museum, the Ameri- 
can Museum of Natural History, the Field Museum, the Illinois Labora- 
tory of Natural History; the California Academy, Stanford University, 
the British Museum, and the Vienna Museum. Labelled Arcadia, Mis- 
souri; gall October 28, 1926; insects November 16, December 4, and 
December 18, 1926; Q. alba; Kinsey collector. 
All of the insect types are from the spiny form of the gall. 
This is the Ozark variety of the species, centering in 
southern Missouri and more northern Arkansas, found thruout 
most of Kentucky, and extending eastward across southern 
Illinois, Indiana, and Ohio into West Virginia. In the eastern- 
most extension of the range the insect is clearly hybridized 
with variety derivatus which extends up the Ohio River Valley 
into Ohio and West Virginia, and in the latter state the hybrid 
shows further darkening with what is probably blood of the 
sub-Canadian and eastern mountain variety wheeleri. Variety 
ozark occurs in rather pure form in southern Indiana and 
Illinois, and its influence is evident in the darkening of the 
insects thruout western Indiana and the length of the Illinois 
River Valley in Illinois all the way to the Chicago area, but 
these more northern specimens show a greater size and a more 
rufous face and a punctate mesonotum which would appear to 
be due to hybridization with variety derivatus. The best indi- 
FIG. 64. OZARK VARIETY OF CYNIPS PEZOMACHOIDES 
