Collection Summary
Plethodon serratus (Southern Red-backed Salamander) has a total of 549 valid, non-duplicated collections representing 34 counties and 184 localities. There are a total of 157 collectors and 191 collection dates for the species. This results in a total of 245 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1896 and its most recent collection year is 2023. The earliest and latest collection dates (independent of earliest and most recent collection years) are January 3 and December 3, 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 | |
|---|---|---|---|---|---|---|---|---|
 | Bollinger | 8 | 19 | 7 | 6 | 8 | 1950 | 1972 |
| Butler | 4 | 16 | 4 | 5 | 5 | 1935 | 1992 |
| Camden | 6 | 30 | 4 | 7 | 8 | 1969 | 1978 |
| Cape Girardeau | 9 | 15 | 7 | 12 | 12 | 1961 | 2016 |
| Carter | 5 | 6 | 7 | 5 | 6 | 1964 | 2015 |
| Crawford | 2 | 5 | 2 | 2 | 3 | 1988 | 1988 |
| Dent | 2 | 5 | 5 | 4 | 4 | 1909 | 2010 |
| Douglas | 1 | 1 | 3 | 1 | 1 | 2003 | 2003 |
| Franklin | 4 | 5 | 4 | 3 | 4 | 1971 | 1995 |
| Henry | 1 | 1 | 1 | 1 | 1 | 1995 | 1995 |
| Howell | 3 | 4 | 3 | 2 | 2 | 1961 | 2005 |
| Iron | 15 | 30 | 15 | 24 | 27 | 1959 | 2023 |
| Jefferson | 19 | 29 | 16 | 18 | 21 | 1900 | 2019 |
| Laclede | 2 | 3 | 2 | 2 | 2 | 1961 | 1969 |
| Madison | 8 | 25 | 8 | 8 | 8 | 1971 | 2020 |
| Maries | 1 | 1 | 1 | 1 | 1 | 1971 | 1971 |
| Miller | 1 | 1 | 1 | 1 | 1 | 1982 | 1982 |
| Morgan | 1 | 5 | 1 | 1 | 1 | 1965 | 1965 |
| Oregon | 4 | 6 | 5 | 4 | 5 | 1950 | 2011 |
| Osage | 1 | 1 | 1 | 1 | 1 | 1995 | 1995 |
| Perry | 5 | 5 | 7 | 5 | 5 | 1959 | 1995 |
| Phelps | 5 | 6 | 8 | 5 | 6 | 1980 | 2019 |
| Pulaski | 1 | 1 | 1 | 1 | 1 | 1955 | 1955 |
| Reynolds | 10 | 32 | 15 | 11 | 17 | 1949 | 2020 |
| Ripley | 2 | 4 | 2 | 2 | 2 | 1968 | 2009 |
| Sainte Genevieve | 7 | 9 | 11 | 7 | 7 | 1956 | 2013 |
| Saint Francois | 4 | 5 | 7 | 4 | 4 | 1907 | 2008 |
| Saint Louis | 11 | 33 | 9 | 11 | 13 | 1896 | 1996 |
| Shannon | 6 | 6 | 12 | 6 | 6 | 1970 | 2010 |
| Stoddard | 5 | 144 | 14 | 19 | 24 | 1960 | 1987 |
| Texas | 10 | 32 | 24 | 12 | 19 | 1961 | 2003 |
| Washington | 6 | 6 | 7 | 6 | 6 | 1952 | 2020 |
| Wayne | 14 | 54 | 33 | 22 | 30 | 1938 | 2015 |
| Wright | 1 | 4 | 1 | 1 | 1 | 2003 | 2003 |