Download PDF as one large file - AToL Decapoda

Family Portunidae 575
6. (1) Posterodistal margin of merus of swimming leg unarmed; 2 spines on upper
margin of palm 7
Posterodistal margin of merus of swimming leg armed with one or two spines or
with spinules or wi th both 8
7. (6) Lateral spine of carapace similar to and very little larger than preceding spine or
tooth; upper margin of dactylus on chela conspicuously fringed with long hairs
P. depressifrons
Lateral spine of carapace much larger than preceding spine or tooth and directed
more outward; upper margin of dactylus on chela with hair inconspicuous
P. floridanus
8. (6) Erect spine on basis of each swimming leg; large round persistent red spot on
posterolateral slope of carapace P.sebae
No erect spines on bases of swimming legs; no large persistent red spot on
posterolateral slope of carapace 9
9. (8) Posterodistal margin of merus of each swimming leg armed with one spine besides
inconspicuous spinules P. spinimanus
Posterodistal margin of merus of each swimming leg armed with spinules but no
spines 10
10. (9) Chelipeds with mesiodorsal spine of carpus less than half length of palm
P. ordwayi
Chelipeds with mesiodorsal spine of carpus greater than half length of palm 11
11. (10) Two distinct submedian red spots in middle of carapace, one on each branchial
lobe P. binoculus
No submedian red spots in middle of carapace P. spinicarpus