Maps
Locality Map
Locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
County Map
County map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
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 25 February 2020.
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 25 February 2020.
Ecological Drainage Locality Map
Ecological Drainage Units locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Natural Divisions Locality Map
Natural Divisions and Sections locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Major Watersheds Locality Map
Major Watersheds locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Level I Ecoregion Locality Map
Level I Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Level II Ecoregion Locality Map
Level II Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Level III Ecoregion Locality Map
Level III Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Level IV Ecoregion Locality Map
Level IV Ecoregion locality map for Coluber constrictor (North American Racer).
Map created 25 February 2020.
Native Status
Coluber constrictor (North American Racer) is native to Missouri.
Collection Summary
Coluber constrictor (North American Racer) has a total of 666 valid, non-duplicated collections representing 112 counties and 494 localities. There are a total of 176 collectors and 429 collection dates for the species. This results in a total of 463 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 2019. 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 | 1 | 1 | 1 | 1 | 1 | 1959 | 1959 |
| Atchison | 2 | 2 | 1 | 2 | 2 | 1986 | 1986 |
| Audrain | 2 | 2 | 2 | 2 | 2 | 1939 | 1999 |
| Barry | 2 | 5 | 2 | 3 | 3 | 1930 | 1939 |
| Barton | 5 | 6 | 8 | 5 | 5 | 1935 | 2018 |
| 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 | 22 | 57 | 9 | 27 | 31 | 1945 | 1997 |
| 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 | 6 | 6 | 1 | 5 | 5 | 1998 | 2018 |
| Camden | 3 | 3 | 6 | 3 | 3 | 1967 | 1999 |
| Cape Girardeau | 2 | 4 | 3 | 3 | 3 | 1914 | 1995 |
| Carroll | 1 | 2 | 1 | 1 | 1 | 1944 | 1944 |
| Carter | 6 | 7 | 10 | 7 | 7 | 1930 | 1999 |
| 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 |
| 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 | 2 | 2 | 2 | 2 | 2 | 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 | 5 | 8 | 4 | 5 | 5 | 1940 | 2016 |
| De Kalb | 1 | 23 | 1 | 2 | 2 | 1960 | 1960 |
| Dent | 7 | 9 | 9 | 8 | 9 | 1909 | 2013 |
| Douglas | 1 | 1 | 2 | 1 | 1 | 2005 | 2005 |
| Dunklin | 5 | 6 | 2 | 5 | 5 | 1957 | 1962 |
| 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 | 8 | 11 | 6 | 10 | 10 | 1959 | 2019 |
| 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 | 10 | 14 | 4 | 13 | 13 | 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 | 4 | 6 | 6 | 4 | 4 | 1941 | 2005 |
| Livingston | 1 | 1 | 1 | 1 | 1 | 1962 | 1962 |
| Macon | 3 | 3 | 3 | 3 | 3 | 1993 | 2012 |
| Madison | 2 | 2 | 3 | 2 | 2 | 2003 | 2003 |
| Maries | 4 | 4 | 2 | 3 | 3 | 1958 | 2013 |
| 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 | 1 | 1 | 2 | 1 | 1 | 1992 | 1992 |
| Monroe | 3 | 3 | 5 | 3 | 3 | 1983 | 2008 |
| Montgomery | 4 | 4 | 3 | 4 | 4 | 1901 | 2018 |
| Morgan | 5 | 5 | 5 | 5 | 5 | 1940 | 2002 |
| Newton | 1 | 1 | 1 | 1 | 1 | 1984 | 1984 |
| Nodaway | 1 | 1 | 1 | 1 | 1 | 1936 | 1936 |
| Oregon | 4 | 4 | 4 | 4 | 4 | 1900 | 2007 |
| Osage | 2 | 2 | 2 | 2 | 2 | 2000 | 2010 |
| Ozark | 4 | 4 | 5 | 4 | 4 | 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 | 7 | 7 | 7 | 7 | 7 | 1945 | 2012 |
| Pike | 7 | 7 | 6 | 7 | 7 | 1948 | 2009 |
| 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 | 7 | 9 | 12 | 7 | 8 | 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 | 4 | 4 | 7 | 4 | 4 | 1941 | 2010 |
| Shelby | 3 | 3 | 2 | 3 | 3 | 1961 | 2015 |
| Stoddard | 3 | 3 | 3 | 3 | 3 | 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 | 1 | 1 | 1 | 1 | 1 | 2001 | 2001 |
| Washington | 4 | 8 | 4 | 5 | 6 | 1909 | 1966 |
| Wayne | 10 | 14 | 16 | 11 | 11 | 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
| Likelihood | County | Rationale | Ecoregion / Watershed | |
|---|---|---|---|---|
 | 2 | Clark | Same Level IV ecoregion, within 5 miles | Loess Flats and Till Plains |
| 2 | New Madrid | Same Level IV ecoregion, within 5 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:
- Colubridae Oppel, 1811 - Typical Harmless Snakes
- Genus:
- Coluber Linnaeus, 1758 - North American Racers, Coachwhips, and Whipsnakes
- Species:
- Coluber constrictor Linnaeus, 1758 - North American Racer
Recent Taxonomic Synonyms
(none)