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Indiana University Studies 
rufous, brighter basally ; anterior parallel lines much smoother than in 
dugesi; lateral lines broad, smooth, and prominent; scutellum wholly 
granulose or irregularly shagreened, slightly raised on the mid-line, 
with a broad, indefinitely bounded foveal groove; hypopygial spine 
shorter, less slender, and more blunt than in dugesi; the wings long, 
about 1.35 of the body in length; first abscissa of the radius without a 
projecting point; the second abscissa with a large, angulated tip; smoky 
patches in every one of the cells and numerous darker spots in most 
of the cells, those near the tip of the discoidal cell and those which 
spread over much of the cubital cell larger, more irregular in shape, 
tending to coalesce; an irregular, sometimes divided spot in the radial 
cell toward the curved tip of the radius; length 2.5 to 3.5 mm. 
GALL. — Thin-shelled, spherical, sessile leaf gall, with the larval 
cell held centrally by fine, radiating fibers. Apparently not to be dis- 
tinguished from the gall of Cynips dugesi ( q.v.). Monothalamous. Al- 
most strictly spherical unless distorted by adjacent galls or other pres- 
sure; slightly flattened basally where the gall is attached sessily or by 
FIG. 45. VARIETIES OF CYNIPS BELLA 
Showing geographic isolation of related insects. 
