Maps
Locality Map
Locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
County Map
County map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Historical Locality Map
Historical locality map for Coluber constrictor (North American Racer). 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 Coluber constrictor (North American Racer). 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 Coluber constrictor (North American Racer).
Map created 6 March 2024.
Natural Divisions Locality Map
Natural Divisions and Sections locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Major Watersheds Locality Map
Major Watersheds locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Level I Ecoregion Locality Map
Level I Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Level II Ecoregion Locality Map
Level II Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Level III Ecoregion Locality Map
Level III Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Level IV Ecoregion Locality Map
Level IV Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 6 March 2024.
Native Status
Coluber constrictor (North American Racer) is native to Missouri.
Collection Summary
Coluber constrictor (North American Racer) has a total of 731 valid, non-duplicated collections representing 114 counties and 551 localities. There are a total of 200 collectors and 475 collection dates for the species. This results in a total of 512 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1889 and its most recent collection year is 2023. The earliest and latest collection dates (independent of earliest and most recent collection years) are January 18 and November 20, 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 | 5 | 5 | 5 | 5 | 5 | 1959 | 2010 |
| Andrew | 2 | 2 | 2 | 2 | 2 | 1959 | 1978 |
| Atchison | 2 | 2 | 1 | 2 | 2 | 1986 | 1986 |
| Audrain | 2 | 2 | 2 | 2 | 2 | 1939 | 1999 |
| Barry | 5 | 8 | 3 | 5 | 5 | 1930 | 1968 |
| Barton | 7 | 8 | 11 | 7 | 7 | 1935 | 2022 |
| Bates | 3 | 4 | 1 | 3 | 3 | 1943 | 1958 |
| Benton | 5 | 6 | 4 | 5 | 5 | 1943 | 2012 |
| Bollinger | 5 | 6 | 6 | 5 | 5 | 1936 | 1999 |
| Boone | 24 | 59 | 10 | 29 | 33 | 1945 | 2020 |
| Buchanan | 2 | 2 | 2 | 2 | 2 | 1993 | 2004 |
| Butler | 3 | 4 | 3 | 3 | 3 | 1939 | 1987 |
| Caldwell | 5 | 10 | 2 | 5 | 5 | 1954 | 2017 |
| Callaway | 8 | 8 | 1 | 7 | 7 | 1998 | 2023 |
| Camden | 4 | 4 | 7 | 4 | 4 | 1967 | 1999 |
| Cape Girardeau | 2 | 4 | 3 | 3 | 3 | 1914 | 1995 |
| Carroll | 1 | 2 | 1 | 1 | 1 | 1944 | 1944 |
| Carter | 8 | 9 | 13 | 9 | 9 | 1930 | 2002 |
| Cass | 2 | 2 | 2 | 2 | 2 | 1950 | 2016 |
| Cedar | 3 | 3 | 5 | 3 | 3 | 1982 | 2012 |
| Chariton | 6 | 6 | 3 | 6 | 6 | 1939 | 2016 |
| Christian | 2 | 2 | 4 | 2 | 2 | 2003 | 2007 |
| Clark | 1 | 1 | 2 | 1 | 1 | 2011 | 2011 |
| Clay | 7 | 7 | 7 | 7 | 7 | 1949 | 1967 |
| Clinton | 2 | 2 | 1 | 2 | 2 | 1960 | 1961 |
| Cole | 1 | 1 | 1 | 1 | 1 | 1999 | 1999 |
| Cooper | 3 | 3 | 3 | 3 | 3 | 1968 | 1996 |
| Crawford | 4 | 6 | 5 | 4 | 4 | 1898 | 2004 |
| Dade | 6 | 6 | 3 | 5 | 5 | 1982 | 2018 |
| Dallas | 4 | 4 | 4 | 4 | 4 | 1939 | 2014 |
| Daviess | 6 | 9 | 5 | 6 | 6 | 1940 | 2016 |
| De Kalb | 1 | 23 | 1 | 2 | 2 | 1960 | 1960 |
| Dent | 7 | 9 | 9 | 8 | 9 | 1909 | 2013 |
| Douglas | 2 | 2 | 3 | 2 | 2 | 1975 | 2005 |
| Dunklin | 6 | 7 | 3 | 6 | 6 | 1957 | 1966 |
| Franklin | 5 | 6 | 5 | 5 | 5 | 1933 | 2011 |
| Gasconade | 4 | 4 | 3 | 4 | 4 | 1991 | 2015 |
| Gentry | 1 | 1 | 1 | 1 | 1 | 2000 | 2000 |
| Greene | 12 | 15 | 10 | 14 | 14 | 1959 | 2023 |
| Grundy | 3 | 4 | 2 | 3 | 3 | 1963 | 1982 |
| Harrison | 3 | 3 | 4 | 3 | 3 | 1992 | 2001 |
| Henry | 1 | 1 | 1 | 1 | 1 | 2004 | 2004 |
| Hickory | 4 | 4 | 4 | 4 | 4 | 1961 | 2005 |
| Holt | 14 | 19 | 5 | 16 | 16 | 1939 | 2018 |
| Howard | 2 | 2 | 2 | 2 | 2 | 2000 | 2000 |
| Howell | 3 | 3 | 3 | 2 | 3 | 1970 | 1970 |
| Iron | 3 | 3 | 2 | 3 | 3 | 1950 | 2009 |
| Jackson | 33 | 62 | 8 | 36 | 41 | 1914 | 1982 |
| Jasper | 5 | 7 | 5 | 5 | 6 | 1899 | 2019 |
| Jefferson | 28 | 33 | 12 | 12 | 14 | 1897 | 1971 |
| Johnson | 10 | 13 | 11 | 13 | 13 | 1960 | 2016 |
| Knox | 4 | 4 | 3 | 3 | 3 | 1961 | 2003 |
| Laclede | 2 | 2 | 3 | 2 | 2 | 2000 | 2002 |
| Lafayette | 2 | 2 | 2 | 2 | 2 | 1983 | 2019 |
| Lawrence | 3 | 3 | 3 | 1 | 3 | ||
| Lewis | 2 | 2 | 2 | 2 | 2 | 2001 | 2013 |
| Lincoln | 3 | 4 | 4 | 4 | 4 | 1964 | 2012 |
| Linn | 5 | 7 | 6 | 5 | 5 | 1941 | 2023 |
| Livingston | 2 | 2 | 2 | 2 | 2 | 1962 | 2020 |
| Macon | 5 | 5 | 5 | 5 | 5 | 1993 | 2021 |
| Madison | 4 | 4 | 5 | 4 | 4 | 1976 | 2003 |
| Maries | 5 | 5 | 3 | 4 | 4 | 1958 | 2022 |
| Marion | 2 | 2 | 2 | 2 | 2 | 2002 | 2015 |
| McDonald | 3 | 3 | 3 | 3 | 3 | 1930 | 1972 |
| Mercer | 1 | 1 | 1 | 1 | 1 | 1950 | 1950 |
| Miller | 2 | 2 | 4 | 2 | 2 | 1968 | 2010 |
| Mississippi | 1 | 1 | 1 | 1 | 1 | 2007 | 2007 |
| Moniteau | 2 | 2 | 4 | 2 | 2 | 1992 | 1993 |
| Monroe | 3 | 3 | 5 | 3 | 3 | 1983 | 2008 |
| Montgomery | 5 | 5 | 4 | 5 | 5 | 1901 | 2018 |
| Morgan | 6 | 6 | 6 | 5 | 6 | 1940 | 2002 |
| New Madrid | 1 | 1 | 1 | 1 | 1 | 2020 | 2020 |
| Newton | 3 | 3 | 4 | 3 | 3 | 1984 | 2002 |
| Nodaway | 3 | 6 | 2 | 5 | 5 | 1905 | 1969 |
| Oregon | 8 | 10 | 9 | 8 | 8 | 1900 | 2007 |
| Osage | 2 | 2 | 2 | 2 | 2 | 2000 | 2010 |
| Ozark | 6 | 6 | 6 | 6 | 6 | 1902 | 2003 |
| Pemiscot | 2 | 2 | 2 | 2 | 2 | 1962 | 1962 |
| Perry | 3 | 3 | 3 | 3 | 3 | 1995 | 2011 |
| Pettis | 5 | 6 | 4 | 5 | 5 | 1939 | 2004 |
| Phelps | 8 | 8 | 8 | 8 | 8 | 1945 | 2020 |
| Pike | 8 | 8 | 6 | 8 | 8 | 1948 | 2021 |
| Platte | 4 | 4 | 3 | 4 | 4 | 1931 | 1950 |
| Polk | 8 | 8 | 5 | 7 | 7 | 2000 | 2016 |
| Pulaski | 3 | 4 | 3 | 4 | 4 | 1954 | 1972 |
| Putnam | 3 | 3 | 2 | 3 | 3 | 1950 | 2015 |
| Ralls | 1 | 1 | 1 | 1 | 1 | 2002 | 2002 |
| Randolph | 4 | 4 | 2 | 4 | 4 | 1961 | 2013 |
| Ray | 6 | 10 | 1 | 6 | 6 | 1951 | 1962 |
| Reynolds | 6 | 7 | 7 | 5 | 7 | 1939 | 1964 |
| Ripley | 3 | 3 | 3 | 3 | 3 | 1996 | 2008 |
| Saint Charles | 7 | 7 | 5 | 7 | 7 | 1939 | 2010 |
| Saint Clair | 8 | 10 | 13 | 8 | 9 | 1938 | 2007 |
| Sainte Genevieve | 4 | 4 | 5 | 4 | 4 | 1932 | 2014 |
| Saint Francois | 5 | 5 | 10 | 5 | 5 | 1931 | 2008 |
| Saint Louis | 13 | 24 | 9 | 15 | 17 | 1889 | 1971 |
| Saline | 3 | 5 | 3 | 3 | 3 | 1940 | 2013 |
| Schuyler | 2 | 2 | 1 | 2 | 2 | 2003 | 2008 |
| Scotland | 3 | 3 | 2 | 2 | 2 | 2003 | 2005 |
| Scott | 4 | 4 | 5 | 4 | 4 | 1938 | 2015 |
| Shannon | 8 | 8 | 14 | 8 | 8 | 1941 | 2010 |
| Shelby | 3 | 3 | 2 | 3 | 3 | 1961 | 2015 |
| Stoddard | 4 | 5 | 4 | 4 | 4 | 1938 | 1949 |
| Stone | 5 | 7 | 6 | 7 | 7 | 1906 | 1973 |
| Sullivan | 3 | 3 | 2 | 2 | 2 | 2005 | 2009 |
| Taney | 5 | 7 | 7 | 6 | 6 | 1966 | 2009 |
| Texas | 6 | 6 | 3 | 5 | 5 | 1932 | 2004 |
| Vernon | 2 | 3 | 2 | 3 | 3 | 1936 | 1937 |
| Warren | 2 | 2 | 2 | 2 | 2 | 1996 | 2001 |
| Washington | 4 | 8 | 4 | 5 | 6 | 1909 | 1966 |
| Wayne | 11 | 15 | 16 | 12 | 12 | 1935 | 2010 |
| Webster | 2 | 2 | 4 | 2 | 2 | 1959 | 2003 |
| Worth | 1 | 1 | 1 | 1 | 1 | 2000 | 2000 |
| Wright | 4 | 5 | 2 | 4 | 4 | 1932 | 2003 |
Potential County Records
There are no potential county records for this species as it has been verified in every Missouri county.