Kinsey: Gall Wasp Genus Cynips 
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narrower (more northern Europe); the mesonotum in large part or 
almost entirely smooth, naked, shining; the abdomen fully twice as 
long as high, produced dorsally but with the second segment reaching 
only two-thirds or less of the way to the tip of the abdomen; the tip of 
the second abscissa of the radius prominently bent or enlarged (Central 
Europe) or not at all enlarged (more northern Europe) ; the length 1.8 
to 4.0 mm. in two varieties. 
The Central European variety divisa ( q.v.) is close to the other 
varieties of Cynips in the same region; the more northern variety atri- 
divisa is very near C. folii atrifolii and C. longiventris forsiusi of that 
region. 
BISEXUAL FEMALE AND MALE.— As described for the genus 
and subgenus (q.v.)- Very similar to the bisexual forms known for 
other species of European Cynips; recognizable by the characters given, 
differing in having the mesonotum somewhat roughened especially an- 
teriorly about the parapsidal grooves, the mesopleuron with a limited 
rough spot, and the tip of the second abscissa of the radius with, per- 
haps, a more distinct sort of triangulate enlargement. 
AGAMIC GALL. — In form a more or less flattened sphere or el- 
lipsoid, not as soft as folii; regular in shape, not distorted in drying, 
up to 7.0 mm. but usually under 5.0 mm. in its longest axis; entirely 
smooth and naked, at first bright red in color, becoming a light rosy 
brown or a straw brown. The outer shell thin but distinct from the 
spongy, not very solid layer beneath; a large part of the gall occupied 
with the larval cell which is central, oval, averaging 2.5 by 4.0 mm., 
the cell with a distinct but inseparable wall. The galls attached to the 
leaf veins, on the under surfaces of the leaves of Quercus pedunculata, 
Q. sessiliflora, and Q. pubescens. There are records for other hosts 
which may apply to undescribed varieties of divisa. 
BISEXUAL GALL. — An irregularly cylindrical, more or less sub- 
divided cell on the edge of a young leaf, in a bud, or on a young shoot; 
characterized in more detail under the descriptions of Cynips divisa 
divisa form verrucosa. 
BANGE. — The species known thruout Europe wherever collections 
have been made on oaks, and from northern Africa and Asia Minor. 
This range probably involves several varieties, only two of which are 
described. 
Altho the galls of divisa are so much smaller and conse- 
quently less conspicuous than those of Cynips folii , they seem 
to be fully as common thruout all parts of Europe in which 
cynipid collections have been made. Usually 10 to 15, but at 
times as many as 35 (acc. Connold 1908), or even 40 or more 
galls (acc. Schmidt 1907) may be found on a single leaf. The 
similar galls of Cynips agama are to be distinguished from 
divisa by their smaller size, thinner walls, and more ellipsoidal 
