202 
Indiana University Studies 
Cynips echinus variety schulthessae, new variety 
agamic form schulthessae, new form 
Figures 26, 151-153, 165, 174, 178, 193 
FEMALE. — Generally rich, dark rufous; foveal groove distinctly 
smooth at the bottom, with a very fine ridge dividing it indistinctly; a 
clouded patch in the cubital cell, but the patches in the discoidal cell 
faint or lacking; length 1.5 to 3.5 mm., averaging nearer 2.5 mm. 
Figures 165, 174, 178. 
GALL. — Very deep bowl-shaped, or vase-shaped, entirely without 
the spines found in the agamic forms of other varieties; a more or less 
regular cylinder or truncate cone attached by a not very narrow base, 
only moderately widened apically; the gall about as high as the apical 
diameter; the top of the gall more or less depressed centrally, making 
an irregular, thin edge which is only rarely dissected to suggest the 
FIG. 26. CYNIPS ECHINUS VARIETIES ON QUERCUS DUMOSA 
AND RELATIVES 
Showing geographic isolation of related insects. 
