Western Leaf-nosed Snake

Western Leaf-nosed Snake

Phyllorhynchus decurtatus

Silhouette: Alex Slavenko · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Joshua Tree National Park
20 Verified sightings at Joshua Tree National Park From 2019 to 2026
23 Verified sightings across all 2 parks From 2019 to 2026
June Best month highest sighting rate
🌙 Nocturnal When it's spotted during nighttime hours (6pm–6am)

About the Western Leaf-nosed Snake

Phyllorhynchus decurtatus, the spotted leafnose snake, is a species of snake in the family Colubridae. The snake is found in the United States and Mexico. Phyllorhynchus decurtatus is a small snake ranging from around 150–450 mm (5.9–17.7 in) in length. The dorsal half of its body varies in color but is generally light brown, with some individuals appearing more cream, pink, or grey colored. Its patterning consists of dark, irregular blotches down the length of its back, and the amount of spots varies between individuals and populations. Markings come in various shades of brown, and are darker along their borders. The amount of blotches on the body range from 18 to 60, and the amount on the tail ranges from 2-15. This species has a dark band running across both of the eyes, which have vertical pupils. It also has a large rostral scale, hence the common name leafnose snake.

The range of Phyllorhynchus decurtatus extends throughout the southwestern United States in the states of California, Nevada, and Arizona, with a single specimen having been spotted in southern Utah. In Mexico it can be found along the coastline of the Gulf of California... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Joshua Tree National Park 🇺🇸 United States
~10%
2 Saguaro National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Western Leaf-nosed Snake in Joshua Tree National Park?

About 10% of wildlife watchers report a Western Leaf-nosed Snake sighting in Joshua Tree National Park, based on 20 verified sightings from GBIF citizen-science data.

When is the best time to see Western Leaf-nosed Snake in Joshua Tree National Park?

June has the highest sighting rate for Western Leaf-nosed Snake in Joshua Tree National Park in our monthly data.

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