Maps
Locality Map
Locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
County Map
County map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Historical Locality Map
Historical locality map for Siren intermedia (Western Lesser Siren). 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 3 August 2022.
Historical County Map
Historical county map for Siren intermedia (Western Lesser Siren). 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 3 August 2022.
Ecological Drainage Locality Map
Ecological Drainage Units locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Natural Divisions Locality Map
Natural Divisions and Sections locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Major Watersheds Locality Map
Major Watersheds locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Level I Ecoregion Locality Map
Level I Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Level II Ecoregion Locality Map
Level II Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Level III Ecoregion Locality Map
Level III Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Level IV Ecoregion Locality Map
Level IV Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 3 August 2022.
Native Status
Siren intermedia (Western Lesser Siren) is native to Missouri.
Collection Summary
Siren intermedia (Western Lesser Siren) has a total of 110 valid, non-duplicated collections representing 19 counties and 44 localities. There are a total of 43 collectors and 57 collection dates for the species. This results in a total of 60 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1899 and its most recent collection year is 2020. The earliest and latest collection dates (independent of earliest and most recent collection years) are January 15 and December 25, 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 | 2 | 7 | 6 | 7 | 7 | 1961 | 1986 |
| Butler | 4 | 24 | 5 | 5 | 5 | 1899 | 1971 |
| Cape Girardeau | 1 | 1 | 2 | 1 | 1 | 1976 | 1976 |
| Carter | 1 | 3 | 1 | 1 | 1 | 1970 | 1970 |
| Dunklin | 1 | 1 | 1 | 1 | 1 | 1957 | 1957 |
| Howell | 1 | 1 | 1 | 1 | 1 | 1988 | 1988 |
| Jefferson | 1 | 1 | 1 | 1 | 1 | ||
| Lincoln | 3 | 4 | 4 | 4 | 4 | 1910 | 2020 |
| Mississippi | 2 | 6 | 3 | 4 | 5 | 1934 | 1973 |
| New Madrid | 1 | 1 | 1 | 1 | 1 | 1961 | 1961 |
| Pemiscot | 1 | 2 | 1 | 1 | 1 | 1961 | 1961 |
| Pike | 6 | 18 | 1 | 13 | 13 | 1996 | 1999 |
| Ripley | 1 | 1 | 3 | 1 | 1 | 1985 | 1985 |
| Saint Charles | 1 | 1 | 1 | 1 | 1 | 1986 | 1986 |
| Sainte Genevieve | 1 | 1 | 1 | 1 | 1 | 2020 | 2020 |
| Saint Louis | 2 | 2 | 2 | 2 | 2 | 1908 | 1908 |
| Scott | 1 | 1 | 1 | 1 | 1 | 1986 | 1986 |
| Stoddard | 7 | 23 | 8 | 9 | 9 | 1967 | 2000 |
| Wayne | 5 | 10 | 8 | 5 | 5 | 1973 | 2011 |
Potential County Records
| Likelihood | County | Rationale | Ecoregion / Watershed | |
|---|---|---|---|---|
 | 2 | Perry | Same watershed, within 5 miles | Upper Mississippi-Cape Girardeau |
| 2 | Ralls | Same watershed, within 5 miles | Salt |
| 4 | Franklin | Same watershed, within 10 miles | Meramec |
| 4 | Franklin | Same watershed, within 10 miles | Big |
| 4 | Reynolds | Same watershed, within 10 miles | Upper Black |
 | 6 | Iron | Same watershed, within 20 miles | Upper St. Francis |
| 6 | Madison | Same watershed, within 20 miles | Upper St. Francis |
| 6 | Madison | Same watershed, within 20 miles | Whitewater |
| 6 | Marion | Same watershed, within 20 miles | Salt |
| 6 | Oregon | Same watershed, within 20 miles | Spring |
| 6 | Saint Francois | Same watershed, within 20 miles | Upper Mississippi-Cape Girardeau |
| 6 | Shannon | Same watershed, within 20 miles | Upper Black |
| 6 | Warren | Same watershed, within 20 miles | Cuivre |
 | 8 | Audrain | Same watershed, within 30 miles | Salt |
| 8 | Monroe | Same watershed, within 30 miles | Salt |
| 8 | Montgomery | Same watershed, within 30 miles | Cuivre |
| 8 | Washington | Same watershed, within 30 miles | Big |
| 8 | Washington | Same watershed, within 30 miles | Meramec |
| 10 | Texas | Adjacent county, same watershed | Meramec |
| 10 | Texas | Adjacent county, same watershed | Current |
Linnaean Classification
- Kingdom:
- Animalia - Animals
- Phylum:
- Chordata - Chordates
- Subphylum:
- Vertebrata - Vertebrates
- Class:
- Amphibia Gray, 1825 - Amphibians
- Order:
- Caudata Scopoli, 1777 - Salamanders
- Family:
- Sirenidae Gray, 1825 - Sirens
- Genus:
- Siren Österdam, 1766 - Sirens
- Species:
- Siren intermedia Barnes, 1826 - Western Lesser Siren
Recent Taxonomic Synonyms
(none)