Liodytes alleni
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~50%
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 |
With luck
About 10% of wildlife watchers report a Striped Crayfish Snake sighting in Everglades National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 40th most-seen of the 54 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
July and November
In those months about 20% of wildlife watchers report a Striped Crayfish Snake in Everglades National Park on a given day, against under 5% in February, September and December, 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.
2nd of 2
Of the 2 parks where we can rate Striped Crayfish Snake sightings, Everglades National Park ranks 2nd at about 10%. The best odds are in Big Cypress National Preserve (United States, about 20%).
Same family: Colubridae
The closest relatives of the Striped Crayfish Snake that you can see in Everglades National Park (family Colubridae, Colubrid Snakes) are North American Racer (about 40%), Corn Snake (about 30%) and Scarletsnake (about 30%), 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 Everglades National Park (28 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.
