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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.

Rare alluvial sands of El Monte Valley, California (San Diego county), support high herpetofaunal species richness and diversity, despite severe habitat disturbance

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.

A mid-Holocene fauna from Bear Den Cave, Sequoia National Park, California

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.

Reproduction in the western hognose snake, Heterodon nasicus (Serpentes: Colubridae) from the southwestern part of its range

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).

Observations on the diet composition of the gray shrew Notiosorex crawfordi (Insectivora), including interactions with large arthropods

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.

An Evolutionary Classification and Checklist of Amphibians and Reptiles on the Pacific Islands of Baja California, Mexico

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.

Influence of size, loss of tail, and burst speed on risk of predation in the banded gecko

Abstract.--Reproductive tissue was examined from 109 sexually mature Hypsiglena torquata museum specimens from Arizona.

REPRODUCTION IN THE NIGHT SNAKE, HYPSIGLENA TORQUATA (SERPENTES: COLUBRIDAE), 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).

Activty patterns of the desert nightsnake (hypsiglena chlorophaea)

-- The vertebrae of Diadophis are rather generalized and similar to those of the small colubrid genera Gyalopion, Sonora, Hypsiglena and Tantilla.

Amphibians and reptiles of the late Pleistocene Tonk Creek local fauna, Stonewall County, Texas