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Indiana University Studies 
brown, becoming light reddish brown and finally dark brown. Internally 
rather hard, crystalline, the outer wall solid, rather thin, the stalk filled 
with a less solid crystalline mass, the body of the gall occupied mostly 
by the larval cell which has a distinct cell wall but is imbedded closely 
against the outer wall of the gall. Attached more or less at right 
angles; occurring singly, or a few scattered over the leaf, on the under 
surfaces of the leaves of Quercus lobata, Q. garryana, Q. dumosa, and 
Q. durata. 
RANGE. — Probably from British Columbia to California, now known 
from western Oregon and more northern California southward in the 
mountains and the foothills to the southern end of the San Joaquin 
Valley. Figures 28, 29. 
A Quercus lobata variety confined to the foothills rimming 
the central valleys of California, a Q. garryana variety occur- 
ring at higher elevations and in more northern localities in 
California and Oregon, and a Q. dumosa and Q. durata vari- 
ety occurring in the Lake County area represent the described 
insects of this species. 
FIGS. 28-29. VARIETIES OF CYNIPS TERES 
On Quercus lobata and Q. garryana (fig*. 28), and on Q. dumosa and relatives (fig. 29). 
