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 Little Tennessee River System

1a. Single, well developed, sharp cervical spine
(Fig. 1B).....................................................Cambarus georgiae
1b. At most, single cervical tubercle, or nothing..................to to 2

 cervical spines

Figure 1. Lateral view of crayfish indicating number and position of cervical spines. Modified from Hobbs (1981).

2a. Two rows of tubercles along mesial margin of
palm.................................................................Cambarus nodosus
2b. Single row of tubercles along mesial margin of palm.........go to 3

jug dep claws web Figure 2. Dorsal view of crayfish claws indicating A) single row of tubercles along mesial margin of palm and B) more than one row of tubercles along mesial margin of palm.  Modified from Hobbs (1981).

3a. Serrate row of tubercles along mesial margin of palm (Fig. 2A); claws extremely setose, appear “hairy”.........Cambarus asperimanus
3b. Flattened row of tubercles along  mesial margin of palm; claws without setae...........................................Cambarus bartonii bartonii

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