This southeastern species occurs mostly on dry sandy soils of the Coastal Plain (K, W). It has been confused with typical retrofractus and lancastriensis in Ky. and elsewhere. There are no confirmed records, but it is expected in western regions. C. hystricinus is known from se. Mo. (Y), perhaps c. Tenn. (APSC) and perhaps s. Ind. (F). There is a recent unverified report from sandstone clifftops at Indian Hill in EDMO (immature coll. of JC in 2014).