Liodytes alleni
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~50% in a week ~80%
The striped crayfish snake (Liodytes alleni) is a species of semiaquatic North American snake in the family Colubridae. The species derives its common name from its principal prey, crayfish. This snake is also called Allen's snake, the striped swamp snake, the striped swampsnake, or simply the swamp snake. It is endemic to peninsular Florida. Although rarely seen due to its secretive behavior, it can be found in large numbers in wet areas, with densities approaching 1,300 snakes per hectare (525 snakes per acre).
The specific name, alleni, is in honor of American zoologist Joel Asaph Allen, who collected the type specimen. The striped crayfish snake is of "small medium" size, 33–50 centimetres (13–20 in) in total length (including tail), with a heavy body. The stripes which contribute to its common name are indistinct and located on the dark dorsal side. The ventral side is yellow with some dark spots. The dorsal scales, which are arranged in 19 rows at midbody, are smooth on the body, with some keeled scales in the anal region. There is a clear sexual dimorphism with the females being the larger sex. The striped crayfish snake is very similar to the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Striped Crayfish Snake sighting in Big Cypress National Preserve on a given day, based on 37 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 22nd most-seen of the 37 reptiles we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April to June
In those months about 40% of wildlife watchers report a Striped Crayfish Snake in Big Cypress National Preserve on a given day, against under 5% in February and August, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Striped Crayfish Snake sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 2 parks where we can rate Striped Crayfish Snake sightings, Big Cypress National Preserve has the highest daily chance: about 20%. Next come Everglades National Park (United States, about 10%).
Same family: Colubridae
The closest relatives of the Striped Crayfish Snake that you can see in Big Cypress National Preserve (family Colubridae, Colubrid Snakes) are Banded Water Snake (about 60%), Brown Watersnake (about 50%) and Scarletsnake (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Striped Crayfish Snake is recorded against all the reptiles logged in Big Cypress National Preserve (37 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
