Collection Summary
Nerodia rhombifer (Diamond-backed Watersnake) has a total of 372 valid, non-duplicated collections representing 40 counties and 131 localities. There are a total of 58 collectors and 143 collection dates for the species. This results in a total of 156 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1891 and its most recent collection year is 2023. The earliest and latest collection dates (independent of earliest and most recent collection years) are March 7 and October 24, 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 | |
---|---|---|---|---|---|---|---|---|
![]() | Barton | 2 | 69 | 2 | 2 | 2 | 1935 | 2018 |
![]() | Bates | 1 | 1 | 1 | 1 | 1 | 1982 | 1982 |
![]() | Benton | 1 | 1 | 1 | 1 | 1 | 1967 | 1967 |
![]() | Bollinger | 7 | 14 | 10 | 12 | 12 | 1936 | 1995 |
![]() | Butler | 3 | 10 | 7 | 7 | 8 | 1898 | 1970 |
![]() | Cape Girardeau | 1 | 1 | 1 | 1 | 1 | 1962 | 1962 |
![]() | Carroll | 3 | 3 | 3 | 3 | 3 | 1992 | 2015 |
![]() | Cass | 1 | 1 | 2 | 1 | 1 | 2004 | 2004 |
![]() | Chariton | 10 | 11 | 3 | 10 | 10 | 1938 | 2021 |
![]() | Clark | 2 | 4 | 2 | 2 | 2 | 2013 | 2013 |
![]() | Clay | 3 | 3 | 3 | 3 | 3 | 1965 | 1967 |
![]() | Dunklin | 9 | 23 | 9 | 14 | 14 | 1904 | 1970 |
![]() | Grundy | 2 | 2 | 1 | 2 | 2 | 1964 | 1964 |
![]() | Henry | 1 | 1 | 1 | 1 | 1 | 1938 | 1938 |
![]() | Holt | 11 | 32 | 8 | 25 | 26 | 1939 | 2023 |
![]() | Jackson | 1 | 1 | 1 | 1 | 1 | 1943 | 1943 |
![]() | Jasper | 3 | 4 | 4 | 4 | 4 | 1899 | 2022 |
![]() | Jefferson | 2 | 2 | 1 | 1 | 1 | ||
![]() | Johnson | 4 | 9 | 6 | 7 | 7 | 1960 | 1982 |
![]() | Lewis | 1 | 1 | 1 | 1 | 1 | 1940 | 1940 |
![]() | Lincoln | 2 | 2 | 2 | 2 | 2 | 2015 | 2015 |
![]() | Linn | 1 | 1 | 1 | 1 | 1 | 1960 | 1960 |
![]() | Livingston | 4 | 34 | 3 | 4 | 4 | 1940 | 2020 |
![]() | Macon | 1 | 1 | 1 | 1 | 1 | 1962 | 1962 |
![]() | McDonald | 1 | 2 | 1 | 1 | 1 | 1930 | 1930 |
![]() | Mississippi | 11 | 41 | 6 | 8 | 9 | 1936 | 1984 |
![]() | New Madrid | 2 | 2 | 2 | 2 | 2 | 1937 | 1961 |
![]() | Nodaway | 2 | 2 | 2 | 2 | 2 | 1977 | 2012 |
![]() | Pemiscot | 4 | 6 | 3 | 3 | 4 | 1923 | 1962 |
![]() | Perry | 1 | 1 | 2 | 1 | 1 | 2016 | 2016 |
![]() | Pike | 3 | 6 | 2 | 5 | 5 | 1992 | 2002 |
![]() | Ray | 1 | 1 | 1 | 1 | 1 | 1994 | 1994 |
![]() | Ripley | 1 | 2 | 1 | 1 | 1 | ||
![]() | Saint Charles | 2 | 4 | 3 | 3 | 3 | 1906 | 1990 |
![]() | Saint Clair | 1 | 1 | 1 | 1 | 1 | 1976 | 1976 |
![]() | Saint Louis | 3 | 5 | 3 | 3 | 4 | 1891 | 1961 |
![]() | Scott | 2 | 2 | 3 | 2 | 2 | 1962 | 2011 |
![]() | Stoddard | 12 | 25 | 16 | 16 | 19 | 1939 | 2023 |
![]() | Vernon | 6 | 38 | 4 | 8 | 8 | 1937 | 2016 |
![]() | Wayne | 3 | 3 | 7 | 3 | 3 | 1966 | 2001 |