Northern green frog

The northern green frog (Lithobates clamitans melanota[2]) is a subspecies of the green frog, Lithobates clamitans. It is native to the northeastern North America and has been introduced to British Columbia.[3] Its mating call sounds like the single note of a plucked banjo. It is also quite common in the pet trade.

Northern green frog
Northern Green Frog - Tewksbury, NJ.jpg
Female, Tewksbury Township, New Jersey
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Ranidae
Genus: Lithobates
L. c. melanota
Trinomial name
Lithobates clamitans melanota
(Rafinesque, 1820)
Ran clam NA range.gif
Native range

Rana clamitans melanotus[1]


Top view, Temagami, Ontario
Blue coloured variation

Adult green frogs attain a snout-vent length (excluding the hind legs) of 5.5 to 9 cm (2.25 to 3.5 in). The ground color is green or brownish-green. Where the green back and sides fade into the white belly and chest, some black mottling may occur. Some individuals may have light-gray mottling on the chest. The most prominent feature is the pair of dorsolateral folds extending from behind the tympanic membranes to just beyond halfway down the back. The male's single vocal sac is internal. When it calls, the throat swells, but the vocal sac is not visible.


The northern green frog dwells in marshes, swamps, ponds, lakes, springs, and other aquatic environments. It is active both day and night.[4]


  1. ^ Lithobates clamitans melanota, Green Frog, CARCNET
  2. ^ Green Frog, Metro Toronto Zoo
  3. ^ Green Frog, Gov. of British Columbia, Ministry of the Environment
  4. ^ Green Frog, Canadian Biodiversity Web Site

External linksEdit