During a statewide crayfish survey of Montana, we documented the southern plains crayfish Procambarus simulans for the first time in the state. Procambarus simulans is native to, and commonly found in, southern and central US states, including Arkansas, Colorado, Kansas, Louisiana, New Mexico, ...
Although more than 428 crayfish species are native to North America65, the diversity, distribution and prevalence ofA. astacithere is still largely unknown. Within North America, the southeastern US harbors the highest number of endemic crayfish species. The region represents not only a center of d...