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Coxa

The coxa is the first, small segment of the leg which connects to the body of the crab.

The coxa of the third and fourth pair of walking legs, from the dorsal view of the crab. Figure modified from Crane (1975). image
The coxa of the third and fourth pair of walking legs, from the dorsal view of the crab. Figure modified from Crane (1975).
The coxa of the of the first through third pairs of walking legs, from the vental view of the crab. Figure modified from Crane (1975). image
The coxa of the of the first through third pairs of walking legs, from the vental view of the crab. Figure modified from Crane (1975).