The most common snake was the southern Pacific rattlesnake (Crotalus oreganus helleri) (n = 53 independent observations), whereas the least common were the San Diego nightsnake (Hypsiglena
ochrorhyncha klauberi), D.
Elgaria sp., alligator lizard -- 2 -- Boidae Charina bottae, rubber boa x -- -- Charina sp., boa -- -- 1 Colubridae Colubridae genus et species unidentified -- 5 9 Coluber constrictor, racer x -- -- Contia tenuis, sharp-tailed snake x -- -- Diadophis punctatus, ring-necked snake x -- -- Diadophis/Tantilla -- 1 -- Hypsiglena
torquata, night snake x -- -- Lampropeltis getula, common kingsnake x -- -- L.
There was a report of an August Hypsiglena torquata female with yolk deposition in Goldberg (2001).
Reproduction in the night snake, Hypsiglena torquata (Serpentes: Colubridae), from Arizona.
Nocturnal nonvenomous snakes commonly found (Easterla 1996) where these shrews occur include the New Mexico blind snake (Leptotyphlops dulcis), ringneck snake (Diadophis punctatus), spotted night snake (Hypsiglena
torquata), patch-nosed snake (Salvadora grahamiae) and black-headed snake (Tantilla hobartsmithii).
Zweifel (1958) described Hypsiglena torquata baueri from Isla de Cedros on the basis of a number of subtle character state trends of dorsal blotching, nuchal blotching, and the lateral striping on the head.
Tanner and Banta (1962) described Hypsiglena torquata martinensis on the basis of a single female differentiated from all other Baja California populations in having 54 subcaudals, two loreal scales, and a dorsal scale row formula of 2321-19-17.
First, we compared risks of predation for pairs of tailed geckos, one large and one small, in a relatively small arena with a predatory snake (Hypsiglena chlorophaea).
Snakes (Hypsiglena chlorophaea) were collected in the same area as the geckos, and all were adults large enough to subdue and swallow prey throughout the range in size of geckos presented.
Abstract.--Reproductive tissue was examined from 109 sexually mature Hypsiglena
torquata museum specimens from Arizona.
The desert nightsnake (Hypsiglena
chlorophaea) is a small (usually <60 cm in total length), secretive, nocturnal, and little-studied snake that is distributed from the desert Southwest and intermountain western United States northward into the okanagan valley of south-central British Columbia (Mulcahy, 2008).
-- The vertebrae of Diadophis are rather generalized and similar to those of the small colubrid genera Gyalopion, Sonora, Hypsiglena