Paracalliax bollorei de Saint Laurent, 1979

Dworschak, Peter C. & Poore, Gary C. B., 2018, More cautionary tales: family, generic and species synonymies of recently published taxa of ghost and mud shrimps (Decapoda: Axiidea and Gebiidea), Zootaxa 4394 (1), pp. 61-76 : 70

Paracalliax bollorei de Saint Laurent, 1979

( Fig. 5 )

Paracalliax bollorei de Saint Laurent, 1979: 1396 .—de Saint Laurent & LeLoeuff 1979: 86 –89, figs 26–28.—Sakai 2005: 216.— Sakai 2011: 515.

Paracalliax stenophthalmus Sakai, Türkay, Beuck & FreiWald, 2015: 130 –131, figs 8, 9. Syn. nov.

Material examined. Holotype of Paracalliax bollorei, Banc d’Arguin , Mauritania, 20–100 m, MNHN IU-2014- 22948 (Th404) (female, 21 mm).

Holotype of P. stenophthalmus , southern Banc d’Arguin (stn GeoB 14847-1) 19°51.143′N, 17°15.816′W, 369 m, SMF 44114 (female, 13.6 mm, lacking major cheliped).

Remarks. Sakai et al. (2015b) mentioned that Paracalliax stenophthalmus differs from P. bollorei because “1) the eyestalks are elongate, circular in cross section and narrowly triangular anteriorly, slightly overreaching the distal margin of the proximal segment of the A1 peduncle (vs. in Paracalliax bollorei , the eyestalks are elongate, but flattened and rounded anteriorly, and are distinctly shorter than the distal margin of the proximal segment of the A1 peduncle); 2) the A1 peduncle reaches the proximal third of the distal segment of the A2 peduncle (vs. the A1 peduncle being almost as long as the A2 peduncle) ...”

Study of the holotype of P. stenophthalmus shows that the eyestalks are not narrowly triangular anteriorly and are distinctly shorter that the proximal segment of the antenna ( Fig. 5A ). Both species have been reported from the same locality, the Banc d’Arguin, off Mauritania. As there exists no evident difference from P. bollorei , P. stenophthalmus is synonymised with the former species.

The species epithet “ stenophthalmus ” as a Greek Latinised name ending in -ophthalmus, -a, -um is an adjective (Kottelat 2012). The gender of Paracalliax is feminine, the combination should therefore be corrected to “ Paracalliax stenophthalma ”.

Figures

FIGURE 5. Paracalliax bollorei de Saint Laurent, 1979, SMF44114,female holotypeof Paracalliax stenophthalmus. A, front in dorsal vieW (A1/1–3: first to third antennular peduncular articles); B, pleomeres 5, 6, telson and left uropods in dorsal vieW. Scale bar = 1 mm.