Crayfishes of Georgia Overview List of Georgia Species Species Lists by Drainage Crayfish Identification Keys by Drainage Ecology and Life History Links and Other Useful Information Glossary
spacer

Dichotomous Key to the Crayfishes of the Newport River System

1a. Claws with red or orange tubercles.......Procambarus troglodytes
1b. Claws without red or orange tubercles...............................go to 3

2a. Cervical spines or tubercles present; rostrum long, often with marginal spines.....................................................................go to 3
2b. Cervical spines and tubercles absent; rostrum shorter, no marginal spines....................................................................................go to 6

 3a. Length of areola six times or more longer than areola width; dark horizontal stripe on upper sides of carapace.........Procambarus lunzi
3b. Length of areola less than 6 times longer than areola width.......................................................Procambarus litosternum

4a. Length of areola usually greater than 10 times longer than broad; claw never with dense setae along the mesial margin of the palm........................................................................................go to 5
4b. Length of areola less than 10 times longer than broad; claws
of male usually with dense setae along mesial margin of the palm.............................................................Procambarus barbatus

5a. Color greenish with red highlights...........Procambarus pygmaeus
5b. Color brownish with pink or bluish hues......Procambarus advena

dougherty
CONNECTING WHAT MATTERS
A-Z Sitewide Index
About the site
Georgia College • 231 W. Hancock St. • Milledgeville, GA 31061 • 1-800-342-0471 ; 478-445-5004 • admissions@gcsu.edu