Procambarus (Ortmannicus) acutus (White River crayfish) was added to West Virginia's decapod crustacean fauna on 26 February, 2004, and this finding was the first record of the genus Procambarus in West Virginia. Six P. (O.) acutus (4 form-I males, 2 females) were collected in traps from a large vernal pool system 1.2 km east of Point Pleasant, Mason County. Several additional specimens were collected from this site during the spring of 2004, with an additional 3 populations discovered in the spring of 2005. White River Crayfish were collected in ephemeral pools, marshes, and roadside ditches. White River Crayfish were found in ephemeral systems only, and appear to have shifted aspects of their typical ecology to suit these systems in West Virginia. White River Crayfish distribution in West Virginia appears to be limited to the pre-glacial Marietta River Valley, and results suggest that it is a native species in West Virginia.