Gecarcoidea lalandii H. Milne-Edwards, 1837

Cuesta, José A., Liu, Hung-Chang & Schubart, Christoph D., 2002, First zoeal stages of Epigrapsus politus Heller, E. notatus (Heller) and Gecarcoidea lalandii H. Milne-Edwards, with remarks on zoeal morphology of the Gecarcinidae Macleay (Crustacea: Brachyura), Journal of Natural History 36 (14), pp. 1671-1685 : 1673

Gecarcoidea lalandii H. Milne-Edwards, 1837

Zoea I (gures 1A–C, 2A–D, 3A–C)

Dimensions. rdl: 0.54 Ô 0.02 mm; cl: 0.33 Ô 0.01 mm; cw: 0.37 Ô 0.01 mm.

Cephalothorax (gure 1A). Globose, smooth and without tubercles, with an anterodorsal protuberance as a carina. Dorsal spine short and slightly curved. Rostral and lateral spines short and straight. One pair of posterodorsal setae. Anterodorsal region, posterior and ventral margin without setae. Eyes sessile.

Antennule (gure 1B). Uniramous. Endopod absent. Exopod unsegmented with three aesthetascs (two long and one thin and short) and two setae.

Antenna (gure 1C). Well-developed protopod almost reaching the tip of rostral spine and bearing two rows of well-developed spines. Exopod elongated, reaching the middle of the protopod and bearing a group of three minute subterminal spinules, one long and one short terminal setae, and ve short terminal spines.

Mandible. Endopod palp absent.

Maxillule (gure 2A). Coxal endite with six plumodenticulate setae. Basial endite with ve setae (two cuspidate and three plumodenticulate). Endopod two-segmented with one plumodenticulate seta on the proximal segment and one medial, two subterminal and two terminal plumodenticulate setae on the distal segment. Exopod absent.

Maxilla (gure 2B). Coxal and basial endites bilobed with 51 4 plumodenticulate setae. Endopod unsegmented, bilobed with one long plumodenticulate and one short simple seta on inner lobe and two long plumodenticulate setae on outer lobe. Scaphognathite with four plumose marginal setae and one long setose posterior process.

First maxilliped (gure 2C). Coxa with one seta. Basis with 10 medial setae arranged 2, 2, 3, 3. Endopod ve-segmented with 2, 2, 1, 2, 5 (one subterminal1 four terminal) setae. Exopod two-segmented, with four long terminal plumose natatory setae on the distal segment. Dorsal part of basis and exopod covered with minute spinules.

Second maxilliped (gure 2D). Coxa without setae. Basis with four medial setae arranged 1, 1, 1, 1. Endopod three-segmented with 1, 1, 6 (three subterminal1 three terminal) setae. Exopod two-segmented, with four long terminal plumose natatory setae on distal segment. Dorsal part of basis and exopod covered with minute spinules.

Third maxilliped. Absent.

Pereiopods. Absent.