Kinsey: Gall Wasp Genus Cynips 
313 
of the insects delay emergence until the second or third years 
as is sometimes the case in Philonix. 
Three of the agamic forms ( erinacei , wheeleri, and pri- 
noides) are known to oviposit, soon after emergence, in the 
dormant buds of the oaks. In these buds the small and incon- 
spicuous galls of the bisexual generations develop early in the 
spring. These galls develop rapidly, the winged adults, both 
females and males, emerging within a month or so after the 
buds first begin to open, ovipositing directly in the leaf veins. 
This life history may be expected to apply with minor modifi- 
cations to the other species of the subgenus, unless the more 
southern varieties have only a single generation (an agamic 
form) each year. 
Cynips (Acraspis) arida, new species 
agamic form 
Figures 57, 290, 291, 333, 354, 403 
FEMALE. — In color light brownish rufous, with considerable rufo- 
piceous; antennae rufo-brown, brownish rufous basally; thorax of nor- 
mal size; the mesonotum moderately, shallowly punctate and moderately 
hairy, almost smooth and shining between the punctation especially 
posteriorly, more roughened anteriorly and laterally; parapsidal grooves 
narrow and poorly defined especially anteriorly; anterior parallel lines 
barely evident; lateral lines moderately broad, smooth, and shining; 
median groove very fine but evident posteriorly; scutellum moderately 
rugose, almost smooth anteriorly, with the median ridge replaced by 
a smooth, median strip; the foveal depression rather narrow, smooth at 
bottom; mesopleuron in large part smooth and shining, sparsely, shal- 
lowly punctate and hairy; abdomen dark rufo-piceous, more rufous 
latero-basally and toward the hypopygium, of normal size, naked except 
for the patches latero-basally, elongate, the second segment tongue- 
shaped, covering two-thirds of the whole abdomen; legs light brownish 
rufous, yellow-rufous at the joints, piceous on the coxae basally; wings 
long, about 1.30 times the body length, the infuscation on the first 
abscissa of the radius very large and heavy; the areolet of moderate 
size to very large; tip of the radius not large but distinctly triangulate; 
a couple of large, elongate, more or less solid patches in the cubital 
cell; length 2.2 to 3.2 mm., averaging about 2.8 mm. Figures 354, 403. 
GALL. — Small, globular, thick-walled leaf gall with the larval cell 
filling a large part of the interior. Monothalamous, up to 7.0 mm., 
averaging under 5.0 mm. in diameter. Strictly spherical when fresh, 
often shrinking irregularly when dried; the gall sometimes drawn out 
at the point of attachment; the surface of the gall finely, irregularly 
