Arizona Ridge-nosed Rattlesnake

Crotalus willardi willardi

Venom Status:

Venomous

 

Characteristics:

This small, locally distributed, uncommon, and protected rattlesnake is adult at 20-24”. The facial stripes including a vertical nose-tip stripe are prominent. Ground color can vary from reddish-gray to a rich reddish-brown. The dorsal pattern is precise and consists of dark edged reddish bars. Variably dark lateral spots are present. Preferred habitats include montane meadows and other such rocky grasslands or scrublands with deciduous growth and scattered pines. NNote the vertical pupils and infrared sensing pit between, but lower than, the nostril and eye. Ovoviviparous. Scales are keeled.

 

Unique Features:

Facial pattern is unmistakable.

 

Habitat and Diet:

Preferred habitats include montane meadows (5,500-9,000 foot elevation) and other such rocky grasslands or scrublands with scattered pines. Neonates utilize caudal luring to draw lizards within striking distance. Preys on small rodents, birds, and lizards.

 

Geographic Range:

AZ,