Liodytes rigida sinicola
Gulf Swampsnake

Rare. Aquatic. Plain brown. Belly yellow, extending just onto sides, with two rows of dark half-circles. Species account on iNaturalist

Arkansas Game & Fish Commission
Species of Greatest Conservation Need

Arkansas Herpetological Atlas 2019

This species is represented by 39 records from 11 sources: 26 museum (), 0 literature (), 0 research (), and 7 observation (), with 6 additional Trauth et al. (2004) locality points remaining unsourced (). It has been museum vouchered for 16 of 75 counties (), with 4 additional counties having other forms of reported occurrence (). Years of collection range from 1930 to 2017.

This species occurs throughout the South Central Plains, predominantly along river and stream bottomlands such as the Arkansas, Little, Ouachita, and Saline rivers and Bayou Bartholomew. The record from west of Lake Hamilton, Garland County (HSU 1351 from 2004), may represent a population that was isolated with the construction of the string of reservoirs along the Ouachita River. Two isolated localities plotted by Trauth et al. (2004) from the Mississippi Alluvial Plain remain unsourced. A record from the vicinity of Warren, Bradley County (UAMN 693 from 1974), comes from a prairie habitat and may warrant reexamination due to similarities in appearance with Regina grahamii.