Franklin Frontline.
№ 06 · The Crayfish Specialist · Harmless

Queensnake

Regina septemvittata · willow snake, leather snake
Identification · Harmless

Identification

A slender creek snake that eats almost nothing but crayfish, and only crayfish that have just moulted. Thirty county records is a strong showing for an animal this specialized.

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Field Photograph
Adult queensnake.
Queensnake (Regina septemvittata)
Queensnake · Regina septemvittataPhoto: Patrick Coin, CC BY-SA 2.5, via Wikimedia Commons
Field Note

This is the one snake on the list that works as a water-quality gauge. Siltation and channelisation kill crayfish, and a creek that loses its crayfish loses its queensnakes within a season or two. A stretch of the Harpeth with queensnakes on it is a stretch that is still working.

County Profile
Encounter odds
3 / 5 · Common on clean creeks
Length
2 / 5 · Under 2 ft
Temper
1 / 5 · Flees
Mix-up risk
3 / 5 · Taken for a watersnake
What to look for
Light brown to grayish, slender, with a creamy white to pale yellow stripe running low along each side and three faint dark stripes above it. Scales are keeled. The belly is yellow with four brown stripes, the middle two narrower than the outer pair. Young carry three extra stripes on the back.
Size
15 to 24 in
Eats
Soft, newly moulted crayfish almost exclusively; occasionally fish and tadpoles
Habits
Hides under flat rock at the water's edge; basks on branches over the current
Also called
willow snake, leather snake
County records
30 research-grade records in Williamson County, 5% of the county total.
Where & When

Where to expect it.

Cool, rocky creeks with clean gravel bottoms. TWRA places the species in Middle and East Tennessee.

Habitat
Cool, rocky streams and rivers. Usually found under large rock or log at the edge, occasionally basking on branches over water.
In this county
The Harpeth's riffles above and below Franklin; the West Harpeth; the rocky runs at Timberland Park and along the Natchez Trace corridor.

Active Season

JJAN
FFEB
MMAR
AAPR
MMAY
JJUN
JJUL
AAUG
SSEP
OOCT
NNOV
DDEC

Charted from this species’ own research-grade records inside Williamson County.

PeakActiveNo records
Told Apart

What it gets mistaken for.

The short version

It shares a creek with the watersnake and gets counted as one, which matters because the watersnake gets counted as a cottonmouth.

Northern WatersnakeSame creek

The queensnake is slim and striped; the watersnake is heavy and banded. If the snake looks thick enough to be a problem, it is not this one.

Common GartersnakeAlso striped

A gartersnake has a light stripe down the center of its back. The queensnake does not; its stripes are low on the sides and on the belly.

Encounter

When you meet one.

What it does

It drops into the water and is gone. Queensnakes do not hold ground and do not bluff.

Wading

Put the rock back.

Flipping creek rock is how most people meet this species. Set each one back the way it was; that rock is somebody's whole habitat.

Replace rock
On a branch

Watch from the bank.

A basking queensnake will stay put if you stop moving. It is the easiest snake here to observe honestly.

Stand still
In a net

Release upstream.

Let it go where you found it, not at the car park. Crayfish density is why it was there.

Release in place
Seeing fewer

That is data.

A creek that loses its queensnakes has usually lost its crayfish first. Report the stretch, with a date, to the Harpeth Conservancy.

Report it

Pack it. Print it. Pass it on.

Most snakes killed in Williamson County are killed by someone who could not name them. Send this to anyone who gardens, hikes, keeps a woodpile, walks a dog off the greenway, or has a teenager who reaches into things. That is most of the county.

Sources
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Medical disclaimer. This field guide is general educational information, not medical advice, and is no substitute for professional diagnosis or treatment. Any bite from a copperhead or a timber rattlesnake is a medical emergency: go to an emergency department, and call the Tennessee Poison Center at 1-800-222-1222 on the way. In an emergency, call 911. Identification disclaimer. No photograph identifies a snake with certainty, and this guide will not make anyone a herpetologist. When the answer matters, keep your distance and send a photograph to someone who does this for a living.