Maps
Locality Map

Locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
County Map

County map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Historical Locality Map

Historical locality map for Diadophis punctatus (Ring-necked Snake). 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 6 March 2024.
Historical County Map

Historical county map for Diadophis punctatus (Ring-necked Snake). 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 6 March 2024.
Ecological Drainage Locality Map

Ecological Drainage Units locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Natural Divisions Locality Map

Natural Divisions and Sections locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Major Watersheds Locality Map

Major Watersheds locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Level I Ecoregion Locality Map

Level I Ecoregion locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Level II Ecoregion Locality Map

Level II Ecoregion locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Level III Ecoregion Locality Map

Level III Ecoregion locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Level IV Ecoregion Locality Map

Level IV Ecoregion locality map for Diadophis punctatus (Ring-necked Snake).
Map created 6 March 2024.
Native Status
Diadophis punctatus (Ring-necked Snake) is native to Missouri.
Collection Summary
Diadophis punctatus (Ring-necked Snake) has a total of 1198 valid, non-duplicated collections representing 105 counties and 493 localities. There are a total of 255 collectors and 465 collection dates for the species. This results in a total of 537 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1887 and its most recent collection year is 2023. The earliest and latest collection dates (independent of earliest and most recent collection years) are January 5 and November 9, respectively. If you have a new record to report, read the New Records section of the FAQ.
Collection Summary by County
| County | Localities | Collections | Collectors | Dates | Expeditions | Earliest Year | Latest Year | |
|---|---|---|---|---|---|---|---|---|
![]() | Adair | 2 | 2 | 2 | 2 | 2 | 1992 | 2012 |
![]() | Andrew | 1 | 3 | 1 | 1 | 1 | 1959 | 1959 |
![]() | Atchison | 4 | 4 | 3 | 4 | 4 | 1986 | 2017 |
![]() | Barry | 11 | 32 | 10 | 17 | 19 | 1930 | 1976 |
![]() | Barton | 4 | 9 | 2 | 3 | 3 | 1982 | 2022 |
![]() | Bates | 3 | 3 | 3 | 3 | 3 | 1982 | 2020 |
![]() | Benton | 4 | 6 | 4 | 4 | 4 | 1940 | 1980 |
![]() | Bollinger | 1 | 1 | 1 | 1 | 1 | 1972 | 1972 |
![]() | Boone | 20 | 142 | 15 | 28 | 33 | 1909 | 2018 |
![]() | Buchanan | 1 | 1 | 1 | 1 | 1 | 1991 | 1991 |
![]() | Butler | 2 | 3 | 3 | 2 | 2 | 1994 | 1994 |
![]() | Caldwell | 5 | 5 | 3 | 3 | 3 | 1992 | 2016 |
![]() | Callaway | 5 | 5 | 4 | 4 | 4 | 2002 | 2020 |
![]() | Camden | 7 | 8 | 6 | 6 | 6 | 1948 | 2012 |
![]() | Cape Girardeau | 6 | 9 | 6 | 7 | 7 | 1938 | 1996 |
![]() | Carroll | 2 | 5 | 2 | 2 | 2 | 1944 | 2019 |
![]() | Carter | 4 | 8 | 11 | 5 | 8 | 1930 | 2022 |
![]() | Cass | 1 | 1 | 1 | 1 | 1 | 1983 | 1983 |
![]() | Cedar | 3 | 4 | 3 | 3 | 3 | 1982 | 2002 |
![]() | Chariton | 2 | 2 | 4 | 2 | 2 | 2005 | 2013 |
![]() | Christian | 7 | 9 | 12 | 7 | 7 | 1967 | 2013 |
![]() | Clark | 1 | 1 | 1 | 1 | 1 | 2010 | 2010 |
![]() | Clay | 2 | 3 | 2 | 2 | 2 | 1939 | 1955 |
![]() | Clinton | 1 | 2 | 1 | 1 | 1 | 1982 | 1982 |
![]() | Cole | 3 | 3 | 5 | 2 | 3 | 1982 | 2012 |
![]() | Cooper | 3 | 5 | 3 | 3 | 3 | 1952 | 1998 |
![]() | Crawford | 8 | 10 | 12 | 7 | 9 | 1892 | 2008 |
![]() | Dade | 2 | 2 | 1 | 1 | 1 | 1982 | 1982 |
![]() | Dallas | 2 | 2 | 4 | 2 | 2 | 1939 | 2000 |
![]() | Daviess | 3 | 11 | 3 | 4 | 4 | 1940 | 2016 |
![]() | De Kalb | 1 | 1 | 1 | 1 | 1 | 1986 | 1986 |
![]() | Dent | 2 | 5 | 5 | 4 | 5 | 1909 | 1964 |
![]() | Douglas | 3 | 3 | 4 | 3 | 3 | 1972 | 2007 |
![]() | Franklin | 6 | 13 | 9 | 9 | 9 | 1934 | 2023 |
![]() | Gasconade | 3 | 4 | 5 | 3 | 3 | 2011 | 2013 |
![]() | Gentry | 2 | 2 | 2 | 2 | 2 | 1983 | 2000 |
![]() | Greene | 14 | 26 | 9 | 14 | 14 | 1953 | 2023 |
![]() | Grundy | 2 | 3 | 2 | 2 | 2 | 1982 | 2005 |
![]() | Harrison | 1 | 1 | 1 | 1 | 1 | 1958 | 1958 |
![]() | Henry | 4 | 6 | 5 | 4 | 5 | 1991 | 2007 |
![]() | Hickory | 7 | 7 | 5 | 6 | 6 | 1940 | 1976 |
![]() | Holt | 4 | 8 | 3 | 4 | 4 | 1959 | 2017 |
![]() | Howard | 1 | 1 | 1 | 1 | 1 | 2008 | 2008 |
![]() | Howell | 4 | 4 | 4 | 4 | 4 | 2003 | 2007 |
![]() | Iron | 8 | 10 | 9 | 6 | 7 | 1950 | 2020 |
![]() | Jackson | 22 | 170 | 6 | 30 | 33 | 1926 | 1997 |
![]() | Jasper | 3 | 5 | 4 | 5 | 5 | 1906 | 2023 |
![]() | Jefferson | 21 | 38 | 22 | 20 | 21 | 1899 | 2019 |
![]() | Johnson | 18 | 57 | 17 | 22 | 28 | 1946 | 1995 |
![]() | Knox | 1 | 1 | 1 | 1 | 1 | 1994 | 1994 |
![]() | Laclede | 3 | 3 | 3 | 3 | 3 | 1954 | 1999 |
![]() | Lafayette | 2 | 2 | 2 | 2 | 2 | 1962 | 1983 |
![]() | Lawrence | 2 | 2 | 3 | 2 | 2 | 1993 | 2007 |
![]() | Lewis | 2 | 2 | 2 | 2 | 2 | 2002 | 2013 |
![]() | Lincoln | 7 | 13 | 9 | 6 | 9 | 1963 | 2013 |
![]() | Linn | 2 | 4 | 4 | 2 | 2 | 1984 | 1984 |
![]() | Livingston | 2 | 2 | 2 | 2 | 2 | 1982 | 2005 |
![]() | Macon | 4 | 6 | 8 | 6 | 6 | 1916 | 2023 |
![]() | Madison | 3 | 4 | 5 | 4 | 4 | 1950 | 2007 |
![]() | Maries | 3 | 3 | 3 | 3 | 3 | 2000 | 2003 |
![]() | Marion | 1 | 1 | 1 | 1 | 1 | 1950 | 1950 |
![]() | McDonald | 4 | 10 | 3 | 5 | 5 | 1936 | 1982 |
![]() | Mercer | 3 | 3 | 1 | 2 | 2 | 1982 | 1983 |
![]() | Miller | 4 | 5 | 7 | 5 | 5 | 1966 | 2010 |
![]() | Moniteau | 2 | 27 | 3 | 2 | 3 | 2000 | 2000 |
![]() | Monroe | 5 | 21 | 6 | 4 | 4 | 1950 | 2001 |
![]() | Montgomery | 2 | 6 | 3 | 4 | 4 | 1902 | 1970 |
![]() | Morgan | 5 | 5 | 4 | 4 | 5 | 1905 | 2002 |
![]() | Newton | 5 | 8 | 8 | 7 | 7 | 1944 | 2011 |
![]() | Nodaway | 3 | 7 | 1 | 3 | 3 | 1967 | 1980 |
![]() | Oregon | 4 | 4 | 4 | 4 | 4 | 1940 | 1988 |
![]() | Osage | 1 | 1 | 1 | 1 | 1 | 2005 | 2005 |
![]() | Ozark | 3 | 8 | 8 | 7 | 8 | 1975 | 2020 |
![]() | Perry | 1 | 1 | 1 | 1 | 1 | 2006 | 2006 |
![]() | Pettis | 13 | 42 | 7 | 10 | 11 | 1939 | 2014 |
![]() | Phelps | 6 | 9 | 10 | 6 | 8 | 1958 | 2015 |
![]() | Pike | 5 | 14 | 9 | 4 | 9 | 1971 | 1994 |
![]() | Platte | 2 | 6 | 1 | 2 | 2 | 1939 | 1983 |
![]() | Polk | 6 | 6 | 2 | 6 | 6 | 1959 | 2016 |
![]() | Pulaski | 7 | 15 | 7 | 7 | 7 | 1929 | 1979 |
![]() | Ralls | 3 | 4 | 5 | 3 | 4 | 1971 | 2001 |
![]() | Randolph | 4 | 4 | 2 | 4 | 4 | 1983 | 2007 |
![]() | Ray | 3 | 8 | 1 | 4 | 4 | 1951 | 1960 |
![]() | Reynolds | 2 | 2 | 4 | 2 | 2 | 1997 | 2021 |
![]() | Ripley | 4 | 4 | 4 | 4 | 4 | 1973 | 2011 |
![]() | Saint Charles | 2 | 2 | 2 | 2 | 2 | 1940 | 1971 |
![]() | Saint Clair | 11 | 58 | 12 | 12 | 15 | 1938 | 2007 |
![]() | Sainte Genevieve | 5 | 17 | 5 | 5 | 5 | 1932 | 2007 |
![]() | Saint Francois | 4 | 6 | 7 | 4 | 6 | 1937 | 2008 |
![]() | Saint Louis | 15 | 44 | 14 | 16 | 18 | 1887 | 1996 |
![]() | Saline | 6 | 21 | 4 | 5 | 5 | 1940 | 2015 |
![]() | Schuyler | 1 | 1 | 1 | 1 | 1 | 2008 | 2008 |
![]() | Shannon | 7 | 8 | 10 | 6 | 6 | 1940 | 2010 |
![]() | Stoddard | 7 | 16 | 6 | 11 | 11 | 1935 | 1970 |
![]() | Stone | 6 | 9 | 10 | 8 | 8 | 1906 | 1976 |
![]() | Sullivan | 3 | 3 | 2 | 3 | 3 | 2003 | 2012 |
![]() | Taney | 11 | 24 | 14 | 15 | 17 | 1946 | 2009 |
![]() | Texas | 5 | 6 | 12 | 4 | 6 | 1989 | 2003 |
![]() | Vernon | 3 | 3 | 3 | 3 | 3 | 1982 | 2020 |
![]() | Warren | 4 | 7 | 4 | 4 | 4 | 1976 | 2018 |
![]() | Washington | 6 | 14 | 7 | 8 | 11 | 1953 | 1972 |
![]() | Wayne | 10 | 14 | 12 | 11 | 11 | 1935 | 1993 |
![]() | Webster | 4 | 4 | 1 | 3 | 3 | 2001 | 2016 |
![]() | Worth | 2 | 3 | 3 | 2 | 2 | 1985 | 2000 |
![]() | Wright | 2 | 2 | 2 | 2 | 2 | 1973 | 2002 |
Potential County Records
| Likelihood | County | Rationale | Ecoregion / Watershed | |
|---|---|---|---|---|
![]() | 2 | Audrain | Same Level IV ecoregion, within 5 miles | River Hills |
![]() | 2 | Putnam | Same Level IV ecoregion, within 5 miles | Loess Flats and Till Plains |
![]() | 2 | Scott | Same Level IV ecoregion, within 5 miles | St. Francis Lowlands |
![]() | 4 | Scotland | Same Level IV ecoregion, within 10 miles | Loess Flats and Till Plains |
![]() | 4 | Shelby | Same Level IV ecoregion, within 10 miles | Loess Flats and Till Plains |
![]() | 4 | Shelby | Same Level IV ecoregion, within 10 miles | River Hills |
![]() | 4 | Shelby | Same Level IV ecoregion, within 10 miles | Claypan Prairie |
![]() | 8 | Dunklin | Same Level IV ecoregion, within 30 miles | Bluff Hills |
![]() | 8 | Dunklin | Same Level IV ecoregion, within 30 miles | Western Lowlands Pleistocene Valley Trains |
![]() | 8 | Mississippi | Same Level IV ecoregion, within 30 miles | St. Francis Lowlands |
![]() | 8 | New Madrid | Same Level IV ecoregion, within 30 miles | St. Francis Lowlands |
Linnaean Classification
- Kingdom:
- Animalia - Animals
- Phylum:
- Chordata - Chordates
- Subphylum:
- Vertebrata - Vertebrates
- Class:
- Reptilia Laurenti, 1768 - Reptiles
- Order:
- Squamata Oppel, 1811 - Lizards and Snakes
- Suborder:
- Serpentes Linnaeus, 1758 - Snakes
- Family:
- Dipsadidae Bonaparte, 1838 - Slender and Robust Rear-fanged Snakes
- Genus:
- Diadophis Baird and Girard, 1853 - Ring-necked Snakes
- Species:
- Diadophis punctatus (Linnaeus, 1766) - Ring-necked Snake
Recent Taxonomic Synonyms
(none)



