The following are some ways to identify the north and south species of stone turtles:

One, look at the shell color

The south species of stone turtles shell color is generally yellow or black or bronze, the north species of stone turtles shell color is generally green or green or yellow-green.

Second, look at the head color

South species of stone turtles head color is generally gray-black or yellow or bronze, some of the southern species of stone turtles head may also have some black broken points, commonly known as "plum blossom points" (but not all the southern species of stone turtles head have "plum blossom point (but not all southern tortoises have "plum blossom dots" on their heads). The northern species has a greenish or greenish head color and does not have any black dots on its head.

Three, look at the edge of the shield

Southern species of stone turtles from the top down to look at the middle of the dorsal armor can generally see the edge of the shield, while the northern species of stone turtles from the top down to look at the middle of the dorsal armor can not be seen in the edge of the shield.

Four, look at the black spots

The black spots on the belly armor of the southern species of stone turtles are generally larger and clearer, while the black spots on the belly armor of the northern species of stone turtles are generally smaller (or even none) and more fuzzy.

The center of the eyeball of the southern species of stone turtles usually have a black line (black line has a long or short, thick or light), and the center of the eyeball of the northern species of stone turtles usually do not have a black line.

The above "five look" is to analyze the identification of the north and south species of stone turtle some simple and basic standards, but these standards can not be simple one-sided use, but should be used in combination to improve the quality of identification. For example, for the "look at the eye line" standard, we can not only rely on the turtle's eye line long or short, thick or light to determine whether the southern species of stone turtles, but also should be combined with the rest of the "four look" standard for analysis. If a turtle's eye line is not obvious enough, but the shell color is yellow or black, head color is gray-black or yellow or bronze, and the edge of the shield, black spots are basically in line with the standards of the southern species of stone turtles, you can be sure that the turtle is the southern species of stone turtles rather than the northern species of stone turtles. If, for example, the head of a stone turtle is a little green (such as yellow with green), and the eye line is not obvious enough, but the shell color, rim shield, black spots are not the characteristics of the northern species of stone turtles described earlier, you can be sure that this stone turtle is not the northern species of stone turtles, but the southern species of stone turtles.