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Key to Gryllotalpa species in the southeastern United States

1.  Knife-shaped process of front trochanters shorter, curved, acute. (Fig. 1) ......major Saussure 1' Knife-shaped process of front trochanters more elongate curved, acute (Fig. 2) .....gryllotalpa (L.)
Figure 1. Forelimb of G. major.
Figure 2. Forelimb of G. gryllotalpa.