Fig. 1. The antennules and flagella of Palinurus elephas. (A) An anterior view of P. elephas (carapace length 138 mm) showing the location of the antennae (ant) and antennules. The antennules are composed of antennular peduncles with three segments (p1, p2 and p3) and antennular flagella (af). Scale bar, 26 mm. (B) The antennular flagella with the medial flagellum (mf) towards the top of the figure and the lateral flagellum (lf) below. Note the discrete aesthetasc tuft (at; length 8 mm) on the lateral flagellum. Scale bar, 1.7 mm. (C) An orthogonal view of the diffuse array of aesthetasc tips with the guard hairs removed.

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