Etisus odhneri Takeda, 1972

Alrasheedi, Sami M, Alrashdi, Mousa N, Alhumaidan, Lama S, Alkhdairi, Ahmad, Alzweihary, Ali M, Alhussaini, Omar M, Alharbi, Lama S, Albalawi, Amirah N, Almutairi, Turki F, Alharbi, Osama A G & Bashal, Afaf A M, 2024, Crabs of the Families Tetraliidae, Trapeziidae and Xanthidae (Crustacea: Decapoda: Brachyura) new to the Ogasawara Islands, Japan, Bulletin of the National Museum of Nature and Science. Series A, Zoology 50 (1), pp. 1-17 : 4-5

publication ID	https://doi.org/10.50826/bnmnszool.50.1_1
DOI	https://doi.org/10.5281/zenodo.12572050
persistent identifier	https://treatment.plazi.org/id/03EC8797-FFBC-FFB9-FCD8-FBB9337EFB2D
treatment provided by	Felipe (2024-06-17 17:30:46, last updated 2024-11-26 08:27:21)
scientific name	Etisus odhneri Takeda, 1972
status

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Etisus odhneri Takeda, 1972 View in CoL

[New Jn: Minami-hime-hizumegani]

( Fig. 2H View Fig )

Material examined. Chichi-jima Is. — Ani-jima I., Hakidashi-hana (27°06′37″N, 142°12′00″E), 5–12 m, 1 ♂ (NSMT-Cr 31514; cb 5.8×cl 4.3 mm), 9-XI-2013, T. Akiyama leg. GoogleMaps ; Chichi-jima I., Sakai-ura (27°05′06″N, 142°12′19″E), 3–9 m, 1 ♀ (NSMT-Cr 31515; cb 5.8×cl 4.4 nm), 13-XI-2013, T. Akiyama leg. GoogleMaps ; Chichi-jima I., Omura Beach (27°05′35″N, 142°11′39″E), 3 m, 1 juv. ♂ (NSMT-Cr 31516; cb 4.6×cl 4.0 mm), 30-VI-2014, H. Komatsu leg. GoogleMaps ; Hitomaru-jima I. (27°07′04″N, 142°11′27″E), 6–8 m, 1 juv. ♂ (cb 5.2×cl 3.9 mm), NSMT-Cr 31517, 29-VI-2014, H. Komatsu leg. GoogleMaps

Haha-jima Is. — Haha-jima I., diving site Iwashi-ne (26°39′40″N, 142°08′44″E), 1 juv. (cb 3.7×cl 2.9 mm), NSMT-Cr 31518, 5-VII-2015, T. Akiyama leg. GoogleMaps

Remarks. The specimens examined are seemingly very close to Etisus demani Odhner, 1925 , and E. odhneri Takeda, 1972 , in sharing the carapace flattened areolation and anterolateral triangular dentation, the developed and weakly twolobed front, and the strongly curved fingers with deeply hoofed tips ( Odhner, 1925, p. 83; Takeda, 1972a, p. 193, pl. 3). In the specimens examined, however, the carapace anterolateral margin has no supplemental spinules between the main teeth, the ambulatory meri are indistinctly serrated with a series of spinules of ten or so in number, and the G1 possesses no long hairs at the base of the distal beak. These features are characteristic for E. odhneri distinct from E. demani . The G1 is figured by Takeda (1972a, fig. 3E–F), Serène (1984, fig. 3E–F), and Mendoza et al. (2014, fig. 6F), and the color photographs were given by Mendoza et al. (2014, fig. 2E) and Mendoza (2023, fig. 4F).

Distribution. So far known from Babeldaob Island (the Palau Islands) in the Micronesia, Chiristmas Island and the Cocos Keeling Islands in the eastern Indian Ocean, and Mombasa ( Kenya) in the western Indian Ocean. The close congener, E. demani , is widely distributed in the Indo-West Pacific including the Ryukyu Islands (cf. Takeda, 1972b).

References

Mendoza, J. C. E., R. M. Lasley Jr. and P. K. L. Ng 2014. New rock crab records (Crustacea: Brachyura: Xanthidae) from Christmas and Cocos (Keeling) Islands, eastern Indian Ocean. Raffles Bulletin of Zoology, Sup- plement 30: 274 - 300.

Mendoza, J. C. E. 2023. The xanthid crabs (Crustacea: Brachyura: Xanthoidea: Xanthidae) of Madagascar and adjacent southwestern Indian Ocean regions from recent marine biodiversity expeditions, 2009 - 2017. In: Corbari, L., Richer de Forges, B. & Macpherson, E. (eds), Deep-Sea Crustaceans from South-West Indian Ocean. Tropical Deep-Sea Benthos 33: Memoires du Museum national d`Histoire naturelle, Paris 217: 121 - 200.

Odhner, T. 1925. Monographierte Gattungen der Krabben-Familie Xanthidae. I. Goteborgs Kungliga Vetenskaps-och Vitterhets-Samhalles Handlingar (4) 29 (1): 1 - 92, pls. 1 - 5.

Serene, R. 1984. Crustaces Decapodes Brachyoures de l`Ocean Indien occidental et de la Mer Rouge. Xanthoidea: Xanthidae et Trapeziidae. Addendum Carpiliidae et Menippidae par A. Crosnier. Faune Tropicale 24: 1 - 349, pls. 1 - 48.

Takeda, M. 1972 a. (July 1971, imprint). New and rare crabs from the Palau Islands. Micronesica 7: 185 - 213.

Takeda, M. 1972 b. Further notes on the unrecorded xanthid crabs from the Ryukyu Islands. Biological Magazine, Okinawa 9: 15 - 24.

Figures

Fig. 2. A: Tetralia brunalineata Trautwein, juv. (NSMT-Cr 31510; cb 3.2×cl 2.7mm) from Hitomaru-jima. B: Trapezia guttata Rüppell, ♂(NSMT-Cr 31511; cb 5.7×cl 5.0mm) from Omura Beach, Chichi-jima. C: Trapezia serenei Odinetz, ovig.♀ (NSMT-Cr 31512; cb 10.3×cl 8.9 mm), from Omura Beach, Chichi-jima. D: Euryxanthops flexidentatus Garth and Kim, ♂ preserved in spirit (NSMT-Cr 31519; cb 22.2×cl 16.3mm) from Kaikata Seamount. E: Juxtaxanthias lividus (Latreille), ♂ preserved in spirit (NSMT-Cr 31527; cb 46.6×cl 31.0mm) from Futami Bay, Chichi-jima. F: Garthiella aberrans (Rathbun), ♀ (NSMT-Cr 31524; cb 8.5×cl 5.6mm) from Haha-jima. G: Lybia caestifera (Alcock), ♂ (NSMT-Cr 31535; cb 3.6×cl 3.2mm) from Ani-jima. H: Etisus odhneri Takeda, ♂ (NSMT-Cr 31514; cb 5.8×cl 4.3mm) from Ani-jima.