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Sonora episcopa (Kennicott in Baird, 1859) - Great Plains Groundsnake

Maps

Locality Map

Locality map for Sonora episcopa (Great Plains Groundsnake)
Locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

County Map

County map for Sonora episcopa (Great Plains Groundsnake)
County map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Historical Locality Map

Historical locality map for Sonora episcopa (Great Plains Groundsnake)
Historical locality map for Sonora episcopa (Great Plains Groundsnake). Black circles ( ) represent records after 1986, blue squares ( ) represent records between 1966 and 1986, orange triangles ( ) represent records prior to 1966. Note that more recent records might conceal underlying older records.
Map created 15 April 2026.

Historical County Map

Historical county map for Sonora episcopa (Great Plains Groundsnake)
Historical county map for Sonora episcopa (Great Plains Groundsnake). Black circles ( ) represent records after 1986, blue squares ( ) represent records between 1966 and 1986, orange triangles ( ) represent records prior to 1966. Note that only the most recent county record for each county is shown.
Map created 15 April 2026.

Ecological Drainage Locality Map

Ecological Drainage Units map for Sonora episcopa (Great Plains Groundsnake)
Ecological Drainage Units locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Natural Divisions Locality Map

Natural Divisions locality map for Sonora episcopa (Great Plains Groundsnake)
Natural Divisions and Sections locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Major Watersheds Locality Map

Major watersheds map for Sonora episcopa (Great Plains Groundsnake)
Major Watersheds locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Level I Ecoregion Locality Map

Level I Ecoregions map for Sonora episcopa (Great Plains Groundsnake)
Level I Ecoregion locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Level II Ecoregion Locality Map

Level II Ecoregions map for Sonora episcopa (Great Plains Groundsnake)
Level II Ecoregion locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Level III Ecoregion Locality Map

Level III Ecoregions map for Sonora episcopa (Great Plains Groundsnake)
Level III Ecoregion locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Level IV Ecoregion Locality Map

Level IV Ecoregions map for Sonora episcopa (Great Plains Groundsnake)
Level IV Ecoregion locality map for Sonora episcopa (Great Plains Groundsnake).
Map created 15 April 2026.

Native Status

Sonora episcopa (Great Plains Groundsnake) is native to Missouri.

Collection Summary

Sonora episcopa (Great Plains Groundsnake) has a total of 284 valid, non-duplicated collections representing 6 counties and 44 localities. There are a total of 29 collectors and 67 collection dates for the species. This results in a total of 77 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1937 and its most recent collection year is 2012. The earliest and latest collection dates (independent of earliest and most recent collection years) are March 1 and September 27, respectively. If you have a new record to report, read the New Records section of the FAQ.

Collection Summary by County

Collection summary for Sonora episcopa (Great Plains Groundsnake) by county. Some values are unavailable since some records are represented solely by historical literature reports, which sometimes lack complete collecting data. Click on a county name to view more information about that county. Click on column headings to sort by that column.
County Localities Collections Collectors Dates Expeditions Earliest Year Latest Year
Christian 1 1 1 1 1 1967 1967
McDonald 4 29 6 9 9 1958 1982
Ozark 10 68 5 12 14 1961 1982
Saint Clair 9 77 6 17 21 1937 1942
Stone 2 2 2 2 2 1946 1946
Taney 18 107 21 30 34 1946 2012

Potential County Records

Potential counties for Sonora episcopa (Great Plains Groundsnake). Counties are listed in descending order of their likelihood of having this species. Click on a county to view more information about that county. Click on column headings to sort by that column.
Likelihood County Rationale Ecoregion / Watershed
2 Benton Same Level IV ecoregion, within 5 miles Osage/Gasconade Hills
2 Greene Same Level IV ecoregion, within 5 miles Springfield Plateau
2 Henry Same Level IV ecoregion, within 5 miles Osage/Gasconade Hills
2 Hickory Same Level IV ecoregion, within 5 miles Osage/Gasconade Hills
4 Douglas Same Level IV ecoregion, within 10 miles White River Hills
4 Lawrence Same Level IV ecoregion, within 10 miles Springfield Plateau
6 Barry Same Level IV ecoregion, within 20 miles Springfield Plateau
6 Barry Same Level IV ecoregion, within 20 miles White River Hills
6 Barry Same Level IV ecoregion, within 20 miles Dissected Springfield Plateau-Elk River Hills
6 Cedar Same Level IV ecoregion, within 20 miles Osage/Gasconade Hills
6 Dade Same Level IV ecoregion, within 20 miles Springfield Plateau
6 Howell Same Level IV ecoregion, within 20 miles White River Hills
6 Newton Same Level IV ecoregion, within 20 miles Dissected Springfield Plateau-Elk River Hills
6 Polk Same Level IV ecoregion, within 20 miles Osage/Gasconade Hills
8 Camden Same Level IV ecoregion, within 30 miles Osage/Gasconade Hills
8 Dallas Same Level IV ecoregion, within 30 miles Osage/Gasconade Hills
8 Morgan Same Level IV ecoregion, within 30 miles Osage/Gasconade Hills
8 Texas Same Level IV ecoregion, within 30 miles White River Hills
8 Webster Same Level IV ecoregion, within 30 miles White River Hills
8 Webster Same Level IV ecoregion, within 30 miles Springfield Plateau
8 Wright Same Level IV ecoregion, within 30 miles White River Hills
9 Pettis Same Level III ecoregion, within 30 miles Ozark Highlands

Linnaean Classification

Kingdom:
Animalia - Animals
Phylum:
Chordata - Chordates
Subphylum:
Vertebrata - Vertebrates
Class:
Reptilia Laurenti, 1768 - Reptiles
Order:
Squamata Oppel, 1811 - Lizards and Snakes
Family:
Colubridae Oppel, 1811 - Harmless Egg-laying Snakes
Genus:
Sonora Baird and Girard, 1853 - North American Groundsnakes
Species:
Sonora episcopa (Kennicott in Baird, 1859) - Great Plains Groundsnake

Recent Taxonomic Synonyms