Chironius laurenti

Chironius laurenti
Chironius laurenti in the Pantanal (Brazil)
Systematics
Subordination : Snakes (serpentes) Superfamily : Adder-like and viper-like (Colubroidea) Family : Adders (Colubridae) Subfamily : True snakes (Colubrinae) Genre : Chironius Type : Chironius laurenti
Scientific name
Chironius laurenti
Dixon , Wiest & Cei , 1993

Chironius laurenti is anon-poisonous species of snake belongingto the family of the adder (Colubridae). It occurs in Bolivia and Brazil .

features

The longest known male and female specimens had a total length of 2.15 and 1.78 meters, respectively. The head (top, side, top part of the rostral shield and top part of the shield of the upper lip ) of adults is olive, grayish or gray-brown. There are 32 to 36 upper jaw teeth.

The upper ( dorsal ) color varies between greyish, gray-olive, brown-olive brown and olive-colored. The rear end of the dorsum is usually greyish, whereas the front two-thirds of the body and tail are brownish in color. The subcaudalia are uniformly yellow. In males there are 2–10 rows of scales, in females 2–6 and in the middle of the body a maximum of 12. Ventralia is between 163 and 181. In females there is a longitudinal crest on the back.

Subadults and some adults have indistinct whitish transverse bands, which are remnants of the juvenile pattern, on the body and tail.

habitat

The known habitat extends over the departments of Beni , Cochabamba and Santa Cruz in Bolivia and Mato Grosso in Brazil.

Systematics

Chironius laurenti belongs to the genus Chironius in the subfamily Colubrinae of the family Colubridae . The species was first described in 1993 by the herpetologists James R. Dixon , John A. Wiest and José M. Cei. The type comes from the Río Mamoré in Beni. The species is named after the Belgian herpetologist Raymond Ferdinand Laurent .

Web links

Commons : Chironius laurenti  - collection of images, videos and audio files

Individual evidence

1. ↑ ^{a b c d} James R. Dixon , John A. Wiest, Jr., José M. Cei: Revision of the Neotropical snake genus Chironius Fitzinger (Serpentes, Colubridae) (=  monograph Museo regional di scienze naturali . Volume 13 ). Museo Regionale di Scienze Naturali, 1993, ISBN 88-86041-05-5 .
2. ↑ ^{a b c} Chironius laurenti in The Reptile Database ; Retrieved August 26, 2012.