Snake Identifier
Ussuri Mamushi (Gloydius ussuriensis)
Gloydius ussuriensis 2869993 by Kim, Hyun-tae, via Wikimedia Commons, licensed under CC BY 4.0
Vipers

Ussuri Mamushi

Gloydius ussuriensis

A small, cold-tolerant pit viper of the Russian Far East and northeastern Asia.

Venomous?
Venomous
Adult length
0.4-0.6 m (1.3-2 ft)
Range
Russian Far East, northeastern China, and the Korean Peninsula

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Overview

The Ussuri mamushi is a small pit viper adapted to the cooler temperate climates of the Russian Far East, northeastern China, and Korea. It is named for the Ussuri region where it is commonly found.

It is among the more cold-hardy pit vipers, active during a shorter warm season than tropical relatives.

How to identify it

  • Grayish to brownish body with darker rounded or oval blotches
  • Small, compact build
  • Triangular head distinct from a narrow neck
  • Vertically elliptical pupils
  • Keeled scales
  • Distinguished from the short-tailed mamushi by smaller size and more northerly range

Habitat & range

Found in forests, meadows, and rocky hillsides across the Russian Far East, northeastern China, and the Korean Peninsula, often near water sources.

Behavior, diet & reproduction

Active mainly during the day in its cool temperate range, hibernating through cold winters. Feeds on small rodents, amphibians, and insects. Bears live young in late summer.

Frequently asked questions

Where does the Ussuri mamushi live?

It is found in the Russian Far East, northeastern China, and the Korean Peninsula.

Is it venomous?

Yes, it is a venomous pit viper, though generally of lower medical significance due to its small size.

How does it cope with cold winters?

It hibernates during the colder months and is most active in the warmer parts of the year.

What does it eat?

Small rodents, amphibians, and insects.