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Prairie Crayfish, Procambarus gracilis: Measurements and Ratios: Form II Male
Number Minimum Maximum Mean
Total length
2 60.6 62.7 61.7
Carapace
Total length
2 32.4 32.7 32.6
Postorbital length
2 27.6 28.2 27.9
Aureola
Length
2 13.2 13.7 13.4
Width
2 0.4 0.4 0.4
Chela
Total length
2 22.4 22.6 22.5
Dactyl length
1 15.1 15.1 15.1
Palm length
2 8.1 8.3 8.2
Palm width
2 10.0 10.4 10.2
Finger gap
1 1.0 1.0 1.0
Antenna
Total length
1 37.3 37.3 37.3
Ratios Number Minimum Maximum Mean
Carapace length / Total length 2 0.52 0.53 0.53
Aureola length / Carapace length 2 0.41 0.42 0.41
Chela length / Carapace length 2 0.69 0.69 0.69
Dactyl length / Chela length 1 0.67 0.67 0.67
Palm width / Chela length 2 0.45 0.46 0.46
Pleopod length / Carapace length 2 0.27 0.29 0.28
