Periclimenes nomadophila Berggren, 1994

Ďuriš, Zdeněk, 2010, Periclimenes laevimanus sp. nov. from Vietnam, with a review of the Periclimenes granulimanus species group (Crustacea: Decapoda: Palaemonidae: Pontoniinae) *, Zootaxa 2372 (1), pp. 106-125 : 119

Periclimenes nomadophila Berggren, 1994

Periclimenes nomadophila Berggren, 1994: 783 , Figs. 1–5 .

Material. 10 female paratypes, RMNH D.42893; 10 male paratypes, RMNH D.42894.

Remarks. Specimens agree in most aspects with the original descriptions and figures provided by Berggren (1994). In addition, a fine marginal denticulation, not mentioned for that species, was found to be present on the posterior dorsal margin of the third abdominal segment. The third maxilliped possesses a small arthrobranch, not mentioned before. In two ovigerous females checked for these branchiae, both third maxillipeds bear small, but well-developed, 3–4 lamellate arthrobranch; these were reduced to 2–3 lamellae in two males specially examined for the arthobranchs’ shape.

Berggren (1994) regarded this species as belonging to the Periclimenes obscurus group and pointed out its close relationship with P. delagoae Barnard, 1958 . Both these species are morphologically intermediate between the P. obscurus and P. granulimanus species groups.

Color. Whitish opaque with red chromatophores, major chela with white fingers and red palm distally Berggren (1994).

Host. Rhopilema nomadica Galil, Spanier & Ferguson (Scyphozoa) .

Distribution. Inhaca Is., Moçambique, approx. 26° S 33° E (type locality).

Figures

FIGURE 1. Periclimenes laevimanus sp. nov., ov. female holotype, total view. Scale bar = 1 mm.

FIGURE 2. Periclimenes laevimanus sp. nov., ov. female cl 2.3 mm, paratype, ION: A, carapace and rostrum, lateral; B, right eye, dorsal; C, right antennula, dorsal; D, left antenna, ventral; E, telson and uropod, dorsal; F, telson, dorsal; G, same distal; H, distolateral angle of uropodal exopod, dorsal. Scale bars = 1 mm.

FIGURE 3. Periclimenes laevimanus sp. nov., chelipeds: A, left first pereiopod; B, same, chela, dorsal; C, same, lateral; D, same, dactylus, dorsal; E, same, distal coxa, basis and ischium, ventral; F, minor second pereiopod, medial; G, same, chela, lateral; H, major second pereiopod, lateral; I, same chela, lateral; J, same, distal propodus and dactylus, lateral. A– E, paratype ov. female cl 2.3 mm (ION); F–J, ov. female holotype. Scale bars = 1 mm.

FIGURE 4. Periclimenes laevimanus sp. nov.: A, left third pereiopod; B, same, propodus and dactylus; C, left fourth pereiopod; D, same, distal propodus and dactylus; E, right fifth pereiopod; F, same, distal propodus and dactylus; G, first male pleopod; H, same, endopod; I, second male pleopod; J, same, appendices interna and masculina. A–F, ov. female holotype; G–J, male allotype. Scale bars = 1 mm (A–C, E–G, I), 0.5 mm (D), 0.35 mm (H) or 0.25 mm (J).

FIGURE 5. Periclimenes laevimanus sp. nov., ov. female paratype cl 2.3 mm (ION), mouthparts: A, mandible; B, same, incisor process; C, maxillula; D, maxilla; E, first maxilliped; F, second maxilliped; G, third maxilliped. Scale bar = 1 mm (B not to scale).