HomeExploreAruba Island Rattlesnake
Aruba Island Rattlesnake
(c) Michael Tromp, some rights reserved (CC BY-NC), uploaded by Michael Tromp · cc-by-nc

Aruba Island Rattlesnake

Crotalus unicolor

SnakeViperidaemedium⚠ VENOMOUSVery Rare
0
Observations
1
States
Last Recorded

Quick ID

Size6199 cm
Patternsolid
Colorspink, brown, tan
Habitatrocky, field

Field Notes

A medium-sized, heavy-bodied pit viper typically measuring 24–39 inches (61–99 cm) in total length. Body is robust with a broad, triangular head distinctly set off from the neck. Dorsal coloration is uniformly pink, salmon, or peachy-brown throughout the body, lacking the prominent crossbands or blotches characteristic of most rattlesnake species—this uniform coloration is the defining feature of the species. The ground color may vary slightly between individuals and with age, ranging from pale dusty pink to deeper salmon tones. Some individuals may display very faint, obscure darker markings along the back, but these are never distinct or well-defined. The tail is typically darker than the body, ranging from brown to dark brown, and terminates in a well-developed rattle. Scales are strongly keeled throughout. Vertical pupils and prominent loreal pits are present. Ventral surface is cream to pale pink, generally unmarked or with minimal dark mottling. Juveniles resemble adults in coloration but are proportionally smaller and may have a yellowish tail tip. Inhabits arid rocky scrublands, desert washes, and sparse shrubland vegetation typical of the island of Aruba in the southern Caribbean. This species is endemic to Aruba and has adapted to a harsh, xeric environment with limited water availability. Diet consists primarily of small mammals such as rodents and occasionally lizards, subdued via envenomation.

Range

Range data © iNaturalist contributors (CC BY 4.0)

Recent Sightings

No sightings recorded yet.