Anker, Arthur & Pachelle, Paulo P. G., 2014, Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae), Zootaxa 3815 (2), pp. 215-232: 227

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Synalpheus  sp. gambarelloides  group

( Fig. 9View FIGURE 9)

Material examined. 1 ov. female (cl 5.0 mm, missing posterior part of abdomen and tail fan), Brazil, Ceará, off Fortaleza, Parque Estadual Marinho da Pedra da Risca do Meio, station Dive II, in Agelas dispar  , leg. L.E.A. Bezerra, 14.VII. 2004 [ MZUSP 31502].

Remarks. Unfortunately, this adult female from Ceará is damaged, missing the two posterior somites of the abdomen, telson and uropods. The short stylocerite ( Fig. 9View FIGURE 9 A) and the minor chela with well-developed gambarelloid setae ( Fig. 9View FIGURE 9 E) indicate clearly that this specimen belongs to the Synalpheus gambarelloides  species group. However, the combination of the frontal region of the carapace with a short rostral carina extending posteriorly to about mid-length of corneas and flanked by shallow rostro-orbital depressions ( Fig. 9View FIGURE 9 A); the antennal scaphocerite without a blade and equalling the distolateral tooth of the basicerite ( Fig. 9View FIGURE 9 A); the major chela with distodorsal protuberance poorly developed and bluntly rounded ( Fig. 9View FIGURE 9 C, D); and the five-articulated carpus of the second pereiopod ( Fig. 9View FIGURE 9 F) do not allow to assign it unambiguously to any of the species reported so far from Brazil or the western Atlantic. With a single damaged specimen on hand it is impossible to say whether it belongs to an undescribed or a morphologically variable species.


Museu de Zoologia da Universidade de Sao Paulo