Maps
Locality Map
Locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
County Map
County map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Currently unavailable: 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 28 February 2018.
Currently unavailable: 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 28 February 2018.
Ecological Drainage Locality Map
Ecological Drainage Units locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Natural Divisions Locality Map
Natural Divisions and Sections locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Major Watersheds Locality Map
Major Watersheds locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Level I Ecoregion Locality Map
Level I Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Level II Ecoregion Locality Map
Level II Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Level III Ecoregion Locality Map
Level III Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Level IV Ecoregion Locality Map
Level IV Ecoregion locality map for Siren intermedia (Western Lesser Siren).
Map created 28 February 2018.
Native Status
Siren intermedia (Western Lesser Siren) is native to Missouri.
Collection Summary
Siren intermedia (Western Lesser Siren) has a total of 104 valid, non-duplicated collections representing 17 counties and 41 localities. There are a total of 39 collectors and 53 collection dates for the species. This results in a total of 56 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 2015. 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 | 6 | 5 | 6 | 6 | 1961 | 1986 |
| Butler | 4 | 24 | 5 | 5 | 5 | 1899 | 1971 |
| Cape Girardeau | 1 | 1 | 2 | 1 | 1 | 1976 | 1976 |
| Dunklin | 1 | 1 | 1 | 1 | 1 | 1957 | 1957 |
| Howell | 1 | 1 | 1 | 1 | 1 | 1988 | 1988 |
| Jefferson | 1 | 1 | 1 | 1 | 1 | ||
| Lincoln | 2 | 3 | 3 | 3 | 3 | 1910 | 2015 |
| 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 |
| 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 | Carter | Same watershed, within 5 miles | Upper Black |
| 2 | Ralls | Same watershed, within 5 miles | The Sny |
| 4 | Franklin | Same watershed, within 10 miles | Meramec |
 | 6 | Iron | Same watershed, within 20 miles | Upper Saint Francis |
| 6 | Madison | Same watershed, within 20 miles | Upper Saint Francis |
| 6 | Madison | Same watershed, within 20 miles | Whitewater |
| 6 | Marion | Same watershed, within 20 miles | The Sny |
| 6 | Oregon | Same watershed, within 20 miles | Spring |
| 6 | Perry | Same watershed, within 20 miles | Upper Mississippi-Cape Girardeau |
| 6 | Reynolds | Same watershed, within 20 miles | Upper Saint Francis |
| 6 | Reynolds | Same watershed, within 20 miles | Upper Black |
| 6 | Warren | Same watershed, within 20 miles | Cuivre |
 | 8 | Monroe | Same watershed, within 30 miles | The Sny |
| 8 | Montgomery | Same watershed, within 30 miles | Cuivre |
| 8 | Shannon | Same watershed, within 30 miles | Upper Black |
| 8 | Washington | Same watershed, within 30 miles | Meramec |
| 10 | Audrain | Adjacent county, same watershed | Cuivre |
| 10 | Sainte Genevieve | Adjacent county, same watershed | Cahokia-Joachim |
| 10 | Sainte Genevieve | Adjacent county, same watershed | Whitewater |
| 10 | Sainte Genevieve | Adjacent county, same watershed | Upper Saint Francis |
| 10 | Sainte Genevieve | Adjacent county, same watershed | Upper Mississippi-Cape Girardeau |
| 10 | Saint Francois | Adjacent county, same watershed | Upper Saint Francis |
| 10 | Saint Francois | Adjacent county, same watershed | Upper Mississippi-Cape Girardeau |
| 10 | Saint Francois | Adjacent county, same watershed | Cahokia-Joachim |
| 10 | Saint Francois | Adjacent county, same watershed | Whitewater |
| 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)