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Merus

The fourth segment of the limb (and 1st major segment), ther merus connects the ischium to the carpus.

The merus of the minor cheliped, from the dorsal view of the crab. Figure modified from Crane (1975). image
The merus of the minor cheliped, from the dorsal view of the crab. Figure modified from Crane (1975).
The merus of the minor cheliped, from the vental view of the crab. Figure modified from Crane (1975). image
The merus of the minor cheliped, from the vental view of the crab. Figure modified from Crane (1975).