Lepidophthalmus tridentatus (von Martens, 1868 )

Poore, Gary C. B., 2023, New records and one new species of Callichiridae (Crustacea, Axiidea) from the Indo-West Pacific, with keys to species of Corallianassa, Lepidophthalmus and Neocallichirus, Memoirs of Museum Victoria (Mem. Mus. Vic.) 82, pp. 71-95 : 75

publication ID	https://doi.org/ 10.24199/j.mmv.2023.82.04
publication LSID	urn:lsid:zoobank.org:pub:5F38D3B8-2255-4559-8C5E-76FE24409F13
DOI	https://doi.org/10.5281/zenodo.12210346
persistent identifier	https://treatment.plazi.org/id/03A25517-FFB1-667A-BD43-FACC21C5B6A8
treatment provided by	Felipe
scientific name	Lepidophthalmus tridentatus (von Martens, 1868 )
status

Treatment

Lepidophthalmus tridentatus (von Martens, 1868) View in CoL

Callianassa tridentata von Martens, 1868: 614–615 .

Lepidophthalmus tridentatus View in CoL .— Dworschak, 2007: 122–129, figs 2–39.— Komai et al., 2018:10–23, figs 1–7 (redescription,synonymy).— Dworschak, 2018: 21 (synonymy, distribution).— Poore et al., 2019: 144.— Robles et al., 2020: 128, figs 1, 4, 7, tables S1, S2.

Material examined. Samoa, Tutuila I., Leone Bay, sand flat (stn BTUT-011), UF 2224 (male, 11.0 mm; female, 13.5 mm).

Diagnosis. Major cheliped carpus, propodus, dactylus upper margins without teeth. Rostrum trifid, lateral spines shorter than medial spine. Cl. to 18 mm.

Distribution. Western and Central Indo-Pacific ( Sri Lanka; Indonesia [type locality: Java]; Papua New Guinea; Samoa; Philippines; Japan, Ryuku Is).

Remarks. Lepidophthalmus tridentatus is notable for the prominent triangular anterolateral carapace angles, the broadly convex posterior margin of the telson and the subrhomboidal uropodal endopod. The species was described from Java, Indonesia, by von Martens (1868) and subsequently reported from Sri Lanka ( Miers, 1884; Sakai, 1970, 1999), New Britain, Papua New Guinea ( Sakai, 1970), Bali, Indonesia ( Dworschak, 2018), Philippines ( Dworschak, 2007) and Japan ( Sakai, 2011; Dworschak, 2018; Komai et al., 2018). This is the first record from Samoa, and extends the range of the species well into the Central South Pacific. Sakai’s (2011) “Diagnosis” mentioned only the male pleopods, neither diagnostic, and is in error. The male pleopod 1 is biarticulate with a simple short second article, not “chelate”, and the male pleopod 2 is biramous with a weakly demarcated appendix masculina and small appendix interna on the endopod as typical of the genus ( Dworschak, 2007: figs 37– 39). Dworschak (2007) noted that his material from the Philippines, with a total length of 22–47 mm, was much smaller than previous records. The specimens from Samoa are within this range.