Western Ribbon Snake
- kingdom: Animalia
- phylum: Chordata
- class: Reptilia
- order: Squamata
- family: Natricidae
- genus: Thamnophis
- species: Thamnophis proximus
Belize City
Belize
Belize
Calle Blancos- Colima
- San José
- San Juan
San José
Costa Rica
El Tigre
Cortés- Barra Patuca
- Puerto Lempira
Gracias a Dios
Honduras
San Cristóbal de Las Casas- Tonalá
Chiapas- Tecpan de Galeana
Guerrero- Cadereyta
- Ciénega de Flores
- San Pedro Garza Garcia
Nuevo León- Ciudad Valles
San Luis Potosí
Mexico
Mount Carmel- Olney
- Rock Island
Illinois- Bloomington
Indiana- Davenport
Iowa- Vicksburg
Mississippi- St. Louis
Missouri- McKenzie
Tennessee- Anahuac
- Aransas Pass
- Austin
- Batesville
- Bee Cave
- Beverly
- Beverly Hills
- Boerne
- Brownsville
- Bryan
- Burnet
- Canyon Lake
- Cisco
- Clute
- College Station
- Cross Mountain
- Edinburg
- Falfurrias
- Fort Hood
- Fort Stockton
- Fulton
- Garden Ridge
- Georgetown
- Graham
- Helotes
- Hidalgo
- Hollywood Park
- Hornsby Bend
- Houston
- Hudson Bend
- Jacksboro
- Junction
- Kerrville
- La Joya
- La Paloma
- Markham
- Midland
- Onion Creek
- Palo Pinto
- Pleasanton
- Pottsboro
- Redwood
- Rockport
- San Antonio
- San Marcos
- Sherwood Shores
- South Point
- Sweeny
- Trinity
- Waco
- Wichita Falls
- Winnie
Texas- Racine
Wisconsin
United States