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Devil Crayfish, Cambarus diogenes: Measurements and Ratios: Form II Male
Number Minimum Maximum Mean
Total length 11 43.7 93.6 63.8
Carapace
Total length 11 22.5 51.5 35.1
Postorbital length 11 19.8 262.6 51.8
Aureola
Length 11 8.8 21.7 14.1
Width 11 0.0 0.0 0.0
Chela
Total length 11 13.8 43.7 24.4
Dactyl length 11 8.8 28.3 15.8
Palm length 11 3.8 12.7 7.3
Palm width 11 6.2 18.7 10.9
Finger gap 11 0.3 3.7 1.7
Antenna
Total length 10 30.5 60.2 42.9
Pleopod
Total length 8 4.7 12.0 8.4
Ratios Number Minimum Maximum Mean
Carapace length / Total length 11 0.51 0.83 0.56
Aureola length / Carapace length 11 0.39 0.42 0.40
Chela length / Carapace length 11 0.55 0.85 0.68
Dactyl length / Chela length 11 0.60 0.69 0.65
Palm width / Chela length 11 0.41 0.48 0.45
Pleopod length / Carapace length 8 0.20 0.26 0.23
