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Genus Gryllotalpa (seven-spurred mole crickets) in North America north of Mexico
Four blade-like fingers on each foretibia; auditory tympanum covered. Forefemur with blade-like lobe. Apex of hindtibia armed with 7 spurs, 4 on inside and 3 on outside. Hindtibia usually armed along upper inner margin with three or four long spines. Length 26-50 mm.
Three species of this genus occur north of Mexico. Gryllotalpa gryllotalpa is an immigrant from Europe, established in New Jersey; G. major is native to North America's tall grass prairies and is now restricted to their remnants; and G. cultriger is a barely known western species.