Kinsey : Gall Wasp Genus Cynips 
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both sexes; the abdomen of the male petiolate, that of the female sub- 
sessile. Length 2.5 mm. 
Wasp: Head black, feebly, very finely and deeply punctate, scatter- 
ingly hairy about the eyes, the mandibles rufous-yellow, the palps pale 
in color. The 15-segmented antennae are feebly hairy, dark brown, the 
first four segments in the female and the first two in the male some- 
what lighter in color, the tip of the second and the very base of the 
third golden brown. The mesonotum smooth, shining, divided by two 
deep grooves into three distinct parts. These grooves are only a little 
shallower anteriorly than posteriorly. It is only at the base and about 
the grooves that there is a feeble punctation, the rest of the surface 
appearing smooth even with high magnification. The scutellum is finely 
rugose, black, sometimes brown at the tip, with a fine gray pubescence, 
the base always with a shallow, smooth and shining foveal grove. The 
prothorax and metathorax are rugose laterally, the mesopleura being 
smooth and shining. The tegulae and hypopygial spine are rufous. The 
legs are largely bright golden rufous, only the coxae, the trochanters 
of the front and middle pairs of legs, and the bases [ ?] of the femora 
[?] brownish piceous. The abdomen of the male is short petiolate, the 
petiole light brown. The wings are only faintly obscured with hairs, 
the veins being dull brown, slightly yellowish, the anal vein having a 
clouded spot at the mid-point. The abdomen of the female is almost 
sessile. Length 2.5 mm. 
Gall: The small, graceful galls, 3 to 4 mm. in length, appear in 
May when the oak leaves first unfold, occurring on the edges of the 
leaves, developing either from the main veins or the lateral veins. In 
form the gall is either cylindrical, flaring at the tip and the base, or 
bluntly tipped and cone-shaped with the base slightly constricted and the 
middle thickest. The color is at first a dull blue-green, becoming yellow- 
ish-green or slightly reddish. What makes the gall especially attractive 
is the nature of the epidermis which appears warty or roughened with 
aggregations of small, perfectly clear vesicles which are filled with 
liquid; between these vesicles are a few stray hairs. The fleshy, succu- 
lent wall of the gall encloses a cylindrical larval cell. 
TYPES. — 5 insects in the Vienna Museum (ace. F. Maidl in litt.). 
The Schlechtendal material from Halle, near Berlin, and Zwickau in 
Germany. 
The present descriptions are based on the published descriptions 
cited in the bibliography, and on four insects I have from Thuringen, 
Germany. 
PARASITES — Torymus abdominalis Boheman. Emerges the same 
June (acc. Wachtl 1876). 
Decatoma sp. Emerges the same June (acc. Wachtl 1876). 
Eurytoma sp. Emerges in June (acc. Wachtl 1876). 
The very attractive, leaf galls of this bisexual form of 
divisa are quite distinct in shape from the usually adventitious 
bud galls of the bisexual forms known for other European 
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