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Pseudacris illinoensis Smith, 1951 - Illinois Chorus Frog

Maps

Locality Map

Locality map for Pseudacris illinoensis (Illinois Chorus Frog)
Locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

County Map

County map for Pseudacris illinoensis (Illinois Chorus Frog)
County map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Historical Locality Map

Historical locality map for Pseudacris illinoensis (Illinois Chorus Frog)
Historical locality map for Pseudacris illinoensis (Illinois Chorus Frog). 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 15 April 2026.

Historical County Map

Historical county map for Pseudacris illinoensis (Illinois Chorus Frog)
Historical county map for Pseudacris illinoensis (Illinois Chorus Frog). 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 15 April 2026.

Ecological Drainage Locality Map

Ecological Drainage Units map for Pseudacris illinoensis (Illinois Chorus Frog)
Ecological Drainage Units locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Natural Divisions Locality Map

Natural Divisions locality map for Pseudacris illinoensis (Illinois Chorus Frog)
Natural Divisions and Sections locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Major Watersheds Locality Map

Major watersheds map for Pseudacris illinoensis (Illinois Chorus Frog)
Major Watersheds locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Level I Ecoregion Locality Map

Level I Ecoregions map for Pseudacris illinoensis (Illinois Chorus Frog)
Level I Ecoregion locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Level II Ecoregion Locality Map

Level II Ecoregions map for Pseudacris illinoensis (Illinois Chorus Frog)
Level II Ecoregion locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Level III Ecoregion Locality Map

Level III Ecoregions map for Pseudacris illinoensis (Illinois Chorus Frog)
Level III Ecoregion locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Level IV Ecoregion Locality Map

Level IV Ecoregions map for Pseudacris illinoensis (Illinois Chorus Frog)
Level IV Ecoregion locality map for Pseudacris illinoensis (Illinois Chorus Frog).
Map created 15 April 2026.

Native Status

Pseudacris illinoensis (Illinois Chorus Frog) is native to Missouri.

Collection Summary

Pseudacris illinoensis (Illinois Chorus Frog) has a total of 123 valid, non-duplicated collections representing 7 counties and 32 localities. There are a total of 23 collectors and 27 collection dates for the species. This results in a total of 28 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1954 and its most recent collection year is 2012. The earliest and latest collection dates (independent of earliest and most recent collection years) are February 5 and December 4, respectively. If you have a new record to report, read the New Records section of the FAQ.

Collection Summary by County

Collection summary for Pseudacris illinoensis (Illinois Chorus Frog) by county. Some values are unavailable since some records are represented solely by historical literature reports, which sometimes lack complete collecting data. Click on a county name to view more information about that county. Click on column headings to sort by that column.
County Localities Collections Collectors Dates Expeditions Earliest Year Latest Year
Bollinger 1 1 1 1 1 1967 1967
Cape Girardeau 2 2 2 2 2 1969 1970
Dunklin 6 65 4 5 6 1959 1986
Mississippi 9 16 9 9 9 1962 1999
New Madrid 2 3 3 2 2 1965 1992
Pemiscot 2 5 3 2 2 1962 1965
Scott 10 31 13 10 10 1954 2012

Potential County Records

Potential counties for Pseudacris illinoensis (Illinois Chorus Frog). Counties are listed in descending order of their likelihood of having this species. Click on a county to view more information about that county. Click on column headings to sort by that column.
Likelihood County Rationale Ecoregion / Watershed
2 Stoddard Same Level IV ecoregion, within 5 miles Western Lowlands Pleistocene Valley Trains
2 Wayne Same Level IV ecoregion, within 5 miles Western Lowlands Pleistocene Valley Trains
6 Butler Same Level IV ecoregion, within 20 miles Western Lowlands Pleistocene Valley Trains
6 Perry Same Level IV ecoregion, within 20 miles Middle Mississippi Alluvial Plain
9 Ripley Same Level III ecoregion, within 30 miles Mississippi Alluvial Plain

Linnaean Classification

Kingdom:
Animalia - Animals
Phylum:
Chordata - Chordates
Subphylum:
Vertebrata - Vertebrates
Class:
Amphibia Gray, 1825 - Amphibians
Order:
Anura Fischer von Waldheim, 1813 - Frogs
Family:
Hylidae Rafinesque, 1815 - Treefrogs and Allies
Genus:
Pseudacris Fitzinger, 1843 - Chorus Frogs
Species:
Pseudacris illinoensis Smith, 1951 - Illinois Chorus Frog

Recent Taxonomic Synonyms

(none)