FIGURE 64 in Crickets of the genus Gryllus in the United States (Orthoptera: Gryllidae: Gryllinae)
Weissman, David B.;
Gray, David A.
FIGURE 64. Color variation in G. assimilis from reddish female (left, Brackettville, TX, S10-63) to dark male (right, Quintana Roo, Mexico, S02-12). Note head narrower than pronotum and hirsute and dull pronotum surface.