Thamnophis proximus

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Thamnophis proximus


Taxonavigation: Colubroidea 

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Cladus: Unidentata, Episquamata
Cladus: Toxicofera
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Natricinae
Genus: Thamnophis
Species: Thamnophis proximus



Thamnophis proximus (Say, 1823)

  • Holotype: ?ANSP, collected by T. Say [Long Rocky Mtn. Expedition] between September 1819–June 1820. [lost fide Smith & Taylor (1945: 166)]
  • Type locality: “stone quarry below Camp Missouri”.


  • Coluber proximus Say in James, 1823: 187 [original combination]
  • Tropidonotus proximusBoie, 1827: 535 [subsequent combination]
  • Eutainia proximaBaird & Girard, 1853: 25 [subsequent combination]
  • Eutaenia proximaBaird, 1859: 16 [subsequent combination]
  • Thamnophis proximaGarman, 1892: 105 [subsequent combination, incorrect gender agreement]
  • Thamnophis proximusStrecker, 1909: 8 [subsequent combination]


  • Eutainia faireyi Baird & Girard, 1853: 25
    • Syntypes (3): USNM 752, adult ♀; UMMZ; and MCZ; collected by Jas. Fairie.
    • Type locality: “Prairie Mer Rouge, La. [=Louisiana]”.



Primary references

  • James, E. 1823. Account of an expedition from Pittsburgh to the Rocky Mountains, performed in the years 1819, '20, by order of the Hon. J. C. Calhoun, Secretary of War, under the command of Major Stephen H. Long. Volume 1. H.C. Carey & I. Lea: Philadelphia.
  • Baird, S.F. & Girard, C. 1853. Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part 1.–Serpents. Smithsonian Institution: Washington. xvi + 172 pp. BHL Reference page

Vernacular names

English: Western Ribbon Snake