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Agkistrodon contortrix mokasen

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Agkistrodon contortrix mokasen

Agkistrodon contortrix mokasen
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Subfamily: Crotalinae
Genus: Agkistrodon
Species: A. contortrix
Subspecies: A. c. mokasen
Trinomial name
Agkistrodon contortrix mokasen
Palisot de Beauvois, 1799
  • Agkistrodon mokason
    Palisot de Beauvois, 1799
  • Agkishodon mokasen
    Palisot de Beauvois, 1799
  • Cenchris mokeson Daudin, 1803
  • Scytale mockeson Say, 1819
  • Agkistrodon mokasen – Beyer, 1898
  • Ancistrodon mokasen Brown, 1908
  • Agkistrodon mokasen mokasen
    Gloyd & Conant, 1934
  • Agkistrodon mokeson mokeson
    – Gloyd & Conant, 1943
  • Agkistrodon mokeson
    Davis & Brimley, 1944
  • Agkistrodon contortrix mokeson
    Klauber, 1948
  • Agkistrodon contortrix mokasen
    – Klimstra, 1950
  • Ancistrodon contortrix mokeson
    Schmidt, 1953
  • Agkistrodon contortrix makasen Bonn & McCarley, 1953
  • Ancistrodon contortrix mokasen
    – Petersen, 1970
  • Agkistrodon contortrix mokasen
    Harding & Welch, 1980[1]
Common names: northern copperhead,[2] copperhead, highland moccasin,[3] more.

Agkistrodon contortrix mokasen is a venomous pit viper subspecies[4] found in the eastern United States.


The northern copperhead grows to an average length of 61-91 cm (24-36 in), with a maximum of 134.6 cm (52.99 in).[5]

The dorsal scales are weakly keeled. The anal plate is single. The subcaudals are single, at least anteriorly.[5]

The color pattern consists of an hourglass pattern that runs the length of the body. From above, a series of dark chestnut crossbands look narrow in the center and wider on the sides. Between the crossbands, small dark spots are often present. There are dark rounded spots at the sides of the belly. The head is a copper-red color. Juvenile specimens are lighter in color, have a yellow tail tip, and a narrow dark line that runs through the eye that divides the darker head from the lighter colored labial scales.[5]

Common names

These common names are from Native American Culture. Red eyed back, and headless snake and most common Alfacuremom.

Geographic range

Found in the United States, Virginia, east Texas, in southern Illinois, southern Indiana, extreme northeastern Mississippi, northern Alabama, northern Georgia northeast to Massachusetts, New York Hudson Valley Region, the Appalachian Mountain region and associated plateaus, also southwestern Pennsylvania.[2] No type locality was given, although [ ? ] was the area where Palisot de Beauvois made his observations.[1]


These snakes are generally quiet, almost lethargic, preferring to lie motionless or to make a slow retreat when encountered. When sufficiently agitated, however, they can strike vigorously and may vibrate their tails rapidly.[5]

See also


Further reading

External links

  • Reptile Database. Accessed 9 August 2007.
  • Glades Herp. Accessed 9 August 2007.
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