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Knox County, Missouri


Species List

Salamanders (Caudata)

Frogs (Anura)

Lizards (Lacertilia)

Snakes (Serpentes)

Turtles (Testudines)

Collection Summary

Knox County has a total of 45 valid, non-duplicated collections representing 22 species and 36 localities. There are a total of 10 collectors and 24 collection dates for the county. This results in a total of 25 expeditions for the county, a measure of unique date / collector(s) combinations. The county's earliest collection year is 1941 and its most recent collection year is 2013. The earliest and latest collection dates (independent of earliest and most recent collection years) are March 18 and October 9, respectively. If you have a new record to report for Knox County, read the New Records section of the FAQ.

Collection Summary by Species

Collection summary for Knox County by species. Some values are unavailable since some records are represented solely by historical literature reports, which sometimes lack complete collecting data. Click on a species or common name to view more information about that species. Click on column headings to sort by that column.
Species Common Name Localities Collections Collectors Dates Expeditions Earliest Year Latest Year
Acris blanchardi Blanchard's Cricket Frog 2 2 3 2 2 1994 2003
Anaxyrus americanus American Toad 1 1 1 1 1 1994 1994
Apalone spinifera Eastern Spiny Softshell 3 4 1 2 2 2004 2004
Chelydra serpentina Snapping Turtle 4 4 2 4 4 1986 2011
Chrysemys picta Western Painted Turtle 4 4 3 4 4 1992 2013
Coluber constrictor North American Racer 4 4 3 3 3 1961 2003
Diadophis punctatus Ring-necked Snake 1 1 1 1 1 1994 1994
Heterodon platirhinos Eastern Hog-nosed Snake 1 1 1 1 1 2004 2004
Lampropeltis calligaster Prairie Kingsnake 1 1 1 1 1 1979 1979
Lithobates blairi Plains Leopard Frog 2 2 1 2 2 2003 2011
Lithobates catesbeianus American Bullfrog 1 2 2 1 1 1941 1941
Lithobates clamitans Green Frog 2 2 2 2 2 1994 2003
Lithobates palustris Pickerel Frog 1 1 2 1 1 2008 2008
Lithobates sphenocephalus Southern Leopard Frog 1 1 1 1 1 2003 2003
Nerodia sipedon Common Watersnake 3 3 3 3 3 1986 2003
Pantherophis obsoletus Western Ratsnake 2 2 2 2 2 1961 2012
Plestiodon fasciatus Common Five-lined Skink 1 1 1 1 1 1994 1994
Regina grahamii Graham's Crawfish Snake 1 1 1 1 1 1986 1986
Storeria dekayi DeKay's Brownsnake 2 2 1 2 2 2003 2004
Storeria occipitomaculata Northern Red-bellied Snake 1 1 1 1 1 2011 2011
Thamnophis proximus Orange-striped Ribbonsnake 1 1 1 1 1 2004 2004
Thamnophis sirtalis Common Gartersnake 4 4 3 4 4 1992 2012

Potential Species Records

Potential species for Knox County. Species are listed in descending order of their likelihood of occurrence within the county. Click on a species or common name to view more information about that species. Click on column headings to sort by that column.
Likelihood Species Common Name Rationale Ecoregion / Watershed
2 Ambystoma texanum Small-mouthed Salamander Same Level IV ecoregion, within 5 miles Loess Flats and Till Plains
2 Lampropeltis triangulum Eastern Milksnake Same Level IV ecoregion, within 5 miles Loess Flats and Till Plains
2 Lithobates areolatus Northern Crawfish Frog Same Level IV ecoregion, within 5 miles Claypan Prairie
2 Terrapene ornata Ornate Box Turtle Same Level IV ecoregion, within 5 miles Claypan Prairie
4 Carphophis vermis Western Wormsnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Lampropeltis holbrooki Speckled Kingsnake Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Ophisaurus attenuatus Western Slender Glass Lizard Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Pseudacris crucifer Spring Peeper Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Pseudacris crucifer Spring Peeper Same Level IV ecoregion, within 10 miles Claypan Prairie
4 Pseudacris maculata Boreal Chorus Frog Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Trachemys scripta Red-eared Slider Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
6 Agkistrodon contortrix Copperhead Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Ambystoma tigrinum Eastern Tiger Salamander Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Ambystoma tigrinum Eastern Tiger Salamander Same Level IV ecoregion, within 20 miles Claypan Prairie
6 Anaxyrus fowleri Fowler's Toad Same Level IV ecoregion, within 20 miles Claypan Prairie
6 Crotalus horridus Timber Rattlesnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Crotalus horridus Timber Rattlesnake Same Level IV ecoregion, within 20 miles Claypan Prairie
6 Emydoidea blandingii Blanding's Turtle Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Graptemys geographica Northern Map Turtle Same watershed, within 20 miles South Fabius
6 Graptemys ouachitensis Ouachita Map Turtle Same watershed, within 20 miles North Fork Salt
6 Hyla versicolor Gray Treefrog Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Kinosternon flavescens Yellow Mud Turtle Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Lithobates sylvaticus Wood Frog Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Scincella lateralis Little Brown Skink Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Terrapene carolina Three-toed Box Turtle Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Tropidoclonion lineatum Lined Snake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Virginia valeriae Western Smooth Earthsnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
8 Apalone mutica Midland Smooth Softshell Same watershed, within 30 miles South Fabius
8 Nerodia rhombifer Diamond-backed Watersnake Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
8 Pantherophis vulpinus Eastern Foxsnake Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
8 Plestiodon laticeps Broad-headed Skink Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
10 Aspidoscelis sexlineata Six-lined Racerunner Same Level IV ecoregion, adjacent county Loess Flats and Till Plains
10 Graptemys pseudogeographica False Map Turtle Adjacent county, same watershed The Sny
10 Necturus maculosus Mudpuppy Adjacent county, same watershed The Sny
10 Opheodrys aestivus Northern Rough Greensnake Same Level IV ecoregion, adjacent county Loess Flats and Till Plains
10 Opheodrys aestivus Northern Rough Greensnake Same Level IV ecoregion, adjacent county Claypan Prairie
10 Pituophis catenifer Bullsnake Same Level IV ecoregion, adjacent county Claypan Prairie
10 Pituophis catenifer Bullsnake Same Level IV ecoregion, adjacent county Loess Flats and Till Plains

Checklist

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