Ankerius grusocurare, a new species of Aphanodactylidae (Decapoda, Brachyura) from Iriomote Island, Ryukyu Islands, Japan

in Crustaceana
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A new species of aphanodactylid genus Ankerius Ng, Rahayu & Shih, 2016, is described from Iriomote Island, Ryukyu Islands, Japan. Ankerius grusocurare n. sp. is distinct from the only congener, A. aenigmaticus, by the shape of the lateral corner of the front (= supraorbital tooth), proportionally wider carapace, and the fewer number of the teeth along the upperflexor margin of the ambulatory meri. The present study brings the number of aphanodactylid taxa to 13 species.

Ankerius grusocurare, a new species of Aphanodactylidae (Decapoda, Brachyura) from Iriomote Island, Ryukyu Islands, Japan

in Crustaceana

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References

AhyongS. T.NgP. K. L.2009. Aphanodactylidae, a new family of thoracotreme crabs (Crustacea: Brachyura) symbiotic with polychaete worms. Zootaxa2289: 33-47.

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NgP. K. L.NaruseT.2009. On the identity of Pinnixa brevipes H. Milne Edwards, 1853, and a new species of Aphanodactylus Tesch, 1918 (Crustacea: Decapoda: Brachyura: Pinnotheroidea) from the Philippines. Raffles Bull. Zool.20(Suppl.): 283-290.

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NgP. K. L.RahayuD. L.ShihH.-S.2016. Ankerius aenigmaticus, a new genus and new species of aphanodactylid crab symbiotic with polychaetes from the Red Sea coast of Saudi Arabia (Crustacea: Decapoda: Brachyura: Aphanodactylidae). Zootaxa4179(2): 271-278.

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Figures

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    Ankerius grusocurare n. sp., holotype, RUMF-ZC-4358. A, habitus in live colour, dorsal view; B, left half, setae denuded; C, cephalothorax, anterior view.

  • View in gallery

    Ankerius grusocurare n. sp., holotype, RUMF-ZC-4358. A, left third maxilliped, outer view; B, left chela, outer view; C, third pereopod (second ambulatory leg), upper view; D, dactylus and distal portion of propodus of third pereopod (second ambulatory leg), upper view; E, dactylus and distal portion of propodus of third pereopod (second ambulatory leg), lower flexor angle. Scale bars = 1 mm.

  • View in gallery

    Name card in Japanese of the late Prof. Dr. Michael Türkay.

  • View in gallery

    Chaetopterus sp., RUMF-ZO-17 (Chaetopteridae). Host of the holotype of Ankerius grusocurare n. sp. (RUMF-ZC-4358).

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