Tadpole Identification Table

For a printer friendly copy click here (don't forget to set the page to landscape)

Species
Spring Peeper (Pseudacris crucifer)
Chorus Frog (Pseudacris triseriata)
Tree Frog (Hyla versicolor)
Wood Frog (Rana sylvatica)
Leopard Frog (Rana pipiens)
Green Frog (Rana clamitans)
Bull Frog (Rana catesbeiana)
American Toad (Bufo americanus)

Vent Location

Dextral
Dextral
Dextral
Dextral
Dextral
Dextral
Dextral
Medial
Eye Placement
Lateral
Lateral
Lateral
Dorsal
Dorsal
Dorsal
Dorsal
Dorsal

Size Range

small-small
small-small
small-medium
small-medium
small-medium
small-large
small-x-large
x-small
Tail Fin Patterns
blotched with a clear area around muscle
unicolored or clear with small black dots

patterned with red coloration

dark markings and terminates at the spinacle
clear with or without small dots
green with black dots and is partly opaque
green with black dots and is partly opaque
dark unicolored and very narrow
Body Coloration
light brown with gold speckles
dark with gold speckles
brownish
brown with gold specles
green with small balck markings
greenish with distinct black dots
dark and unicolored with no markings
Stomach and throat
not pigmented
throat not pigmented
gut not visable
gut visable and marked throat
Teeth rows
2-4
2-4
3-4
4
3
2-3
2-3
3
Tadpole Page

Most of the tadpole photos that you see in this table have been published as a PWRC/USGS project (website listed below).

Tadpoles of the United States and Canada: A Tutorial and Key Ronald Altig 1 , Roy W. McDiarmid 2 , Kimberly A. Nichols 3 and Paul C. Ustach 4 http://www.pwrc.usgs.gov/tadpole/

This identification table has also used a published tutorial (web site listed below) on the morphology of the tadpoles to assist with the explanation of the key features listed in the table. http://www.pwrc.usgs.gov/tadpole/tutorial.htm