Synalpheus bocas Anker and Tóth, Anker and Toth

Iii, Kenneth S Macdonald, Hultgren, Kristin & Duffy, Emmett, 2009, The sponge-dwelling snapping shrimps (Crustacea, Decapoda, Alpheidae, Synalpheus) of Discovery Bay, Jamaica, with descriptions of four new species, Zootaxa 2199, pp. 1-57: 11

publication ID 10.5281/zenodo.189568

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Synalpheus bocas Anker and Tóth


Synalpheus bocas Anker and Tóth  

Color Plates 1 D, 2 A,B

Material examined. Jamaica: Ovigerous female ( VIMS 08JAM0503), Columbus Park, Discovery Bay, from canals of Xestospongia   sp. Non-ovigerous individual, 2 ovigerous females ( VIMS 08JAM7402,04,08), wall off Rio Bueno, from canals of Xestospongia proxima   . 2 ovigerous females ( VIMS 08JAM7503,05), wall off Rio Bueno, from canals of Xestospongia subtriangularis   . 2 non-ovigerous individuals, 3 ovigerous females ( VIMS 08JAM 8403 -05), wall off Rio Bueno, from canals of X. proxima   . MaxCL ovigerous female: 4.42 mm. MaxCL non-ovigerous individual: 4.17 mm.

Color. Pale, milky appearance, distal portion of major chela orange-brown; embryos and mature ovaries either bright green or yellow (see Color plates 1 D, 2 A,B).

Hosts and ecology. In Jamaica, this species has only been found in sponges of the genus Xestospongia   . It is found as one to several pairs, and is often cohabitating with other members of the S. paraneptunus   group ( S. belizensis   , S. duffyi   ).

Distribution. Bocas   del Toro, Panama ( Anker and Tóth 2008); Jamaica (this study).

Remarks. Synalpheus bocas   is another member of the S. paraneptunus   complex, which also includes S. belizensis   and S. duffyi   in Jamaica. Synalpheus bocas   is morphologically most similar to S. belizensis ( Anker and Tóth 2008)   , from which it can be distinguished by the absence of a scaphocerite blade (vs. presence of a small blade in S. belizensis   ); stouter telson dorsal spines, and bright green embryos and ovaries (vs. yellow), although the embryos of one specimen from Panama were described as “greenish yellow” ( Anker and Tóth 2008). Similarly, in Jamaica, we have observed individual females of S. bocas   carrying embryos ranging from green to yellow (see Color plate 1 D, 2 A,B). Therefore, differentiation between these two species requires a careful examination of the scaphocerite and often a direct comparison of the dorsal spines on the telson. Synalpheus bocas   may be distinguished from the remaining members of the S. paraneptunus   complex by the same characters as S. belizensis   (see above).


Virginia Institute of Marine Science