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Graptemys is a genus of freshwater turtles containing 14 species, commonly known as map turtles. [5] Graptemys are small to medium-sized turtles that are significantly sexually dimorphic , with females in some species attaining as much as twice the length and ten times the mass as males.
Graptemys geographica Stejneger & Barbour, 1917 [3] The northern map turtle ( Graptemys geographica ), also known as the common map turtle , [ 4 ] is an aquatic turtle in the family Emydidae . It is endemic to North America .
Graptemys ouachitensis ouachitensis Cagle, 1953; Graptemys ouachitensis sabinensis Cagle, 1953; In recent years the Sabine map turtle (Graptemys ouachitensis sabinensis) has been recognized by many as a full species Sabine map turtle (Graptemys sabinensis). [3] [4] [5]
The black-knobbed map turtle (Graptemys nigrinoda), formerly known as the black-knobbed sawback, is a small to medium-sized aquatic turtle with light gray skin. [5] Some of the most distinguishing characteristics of the black-knobbed map turtle, and the Graptemys genus , are the protruding "spikes" on the turtle's carapace .
The Alabama map turtle (Graptemys pulchra) is a species of emydid turtle native to the southern United States. Differentiation from other turtle species includes a black stripe running down the center of its back with knobs extruding from it, but these projections wear down with age. T.H. Bean and L. Kumlen first collected the Alabama map turtle in July 1876 from a lake near Montgomery, Alabama.
The Pearl River map turtle (Graptemys pearlensis) is a species of emydid turtle native to the southern United States. According to a study done in January 2017, the species G. pearlensis was significantly less abundant in the Pearl River region as compared to G. oculifera and exhibited a smaller number of reproductively mature females.
Barbour's map turtle (Graptemys barbouri) is a species of turtle in the family Emydidae. The species is native to the southeastern United States. Geographic range
The yellow-blotched map turtle (Graptemys flavimaculata), or yellow-blotched sawback, is a species of turtle in the family Emydidae. It is part of the narrow-headed group of map turtles , and is endemic to the southern United States .