User:Kevinjudge/sandbox
Until the mid-1950s, native field crickets in eastern North America were all assigned to a single species, ‘’Acheta assimilis’’ Fabricius. Although regional variation in calling song and life history were noted Cite error: The <ref> tag has too many names (see the help page)., [1], no morphological characters could be found to reliably distinguish these variants [2]. Building upon the pioneering work of Fulton [1], Alexander [2] used male calling song, life history and crosses between putative species to revise the taxonomy of gryllines in the eastern United States, and recognized five species, one of which was ‘’Gryllus pennsylvanicus’’ Burmeister (then ‘’A. pennsylvanica’’).