Abstract
A new species of sponge-endosymbiotic shrimps, Periclimenoides tyrannodentatus, is described and illustrated. The species is remarkable for its stout subspatulate first pereiopods chelae with lateral fan-shaped pectination on their dactyli. Due to this character and simple ambulatory dactyli, the new species is similar to the type species of the genus, P. odontodactylus. Another remarkable character is in the unique shape of the minor chela of the second pereiopods; the distal cutting edges of its compressed fingers are distinctly expanded and armed with quite impressive dentitions. An identification key to the three currently recognised species of the genus Periclimenoides is provided. The new species represents the first record of the genus Periclimenoides from Taiwan.
References
Bruce, A.J. (1969) Preliminary descriptions of ten new species of the genus Periclimenaeus Borradaile, 1915 (Crustacea, Decapoda Natantia, Pontoniinae). Zoologische Mededelingen, 44, 159–176.
Bruce, A.J. (1981) Pontoniine shrimps of Heron Island. Atoll Research Bulletin, 245, 1–33.
http://dx.doi.org/10.5479/si.00775630.245Bruce, A.J. (1983) The pontoniine shrimp fauna of Australia. Australian Museum Memoirs, 18, 195–218.
http://dx.doi.org/10.3853/j.0067-1967.18.1984.385
Bruce, A.J. (1990) Additions to the marine shrimp fauna of Hong Kong. In: Morton, B. (Ed.), The marine fauna and flora of Hong Kong and southern China. Proceedings of the Second International Marine Biological Workshop, Hong Kong, 1986. Hong Kong University Press, Hong Kong, pp. 611–648.
Bruce, A.J. (1995) A synopsis of the Indo-West Pacific genera of the Pontoniinae (Crustacea: Decapoda: Pontoniinae). Theses Zoologicae, 25, 1–172. [imprint ‘1994‘]
Bruce, A.J. (2006) Pontoniine shrimps (Decapoda: Palaemonidae) from the island of Socotra, with descriptions of new species of Dactylonia Fransen, 2002 and Periclimenoides Bruce, 1990. Zootaxa, 1137, 1–36.
Bruce, A.J. (2010a) A revision of the systematic position of Periclimenaeus spinimanus Bruce, 1969 (Crustacea: Decapoda: Pontoniinae) and the designation of Anisomenaeus gen. nov. In: De Grave, S. & Fransen, C.H.J.M. (Eds.), Contributions to Shrimp Taxonomy. Zootaxa, 2372, 338–340.
Bruce, A.J. (2010b) Typtonoides nieli gen. nov., sp. nov., a new pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from the Chesterfield Island. The Beagle, Records of the Museums and Art Galleries of the Northern Territory, 26, 69–74.
Bruce, A.J. & Bauer, R.T. (1997) A new pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from the Ryukyu Islands, Japan. Journal of Natural History, 31, 1709–1721.
http://dx.doi.org/10.1080/00222939700770901
Chace, F.A. Jr. & Bruce, A.J. (1993) The Caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907–1910. Part 6: Superfamily Palaemonoidea. Smithsonian Contributions to Zoology, 543, 1–152.
http://dx.doi.org/10.5479/si.00810282.543
Costa, O.G. (1844) Su due nuovi generi di Crostacei decapodi macrouri. Annali delle Accademia degli Aspiranti Naturalisti, Napoli, 2, 285–-292.
Ďuriš, Z., Horká, I., Juračka, P.J., Petrusek, A. & Sandford, F. (2011) These squatters are not innocent: the evidence of parasitism in sponge-inhabiting shrimps. PLoS ONE, 6 (7), e21987.
http://dx.doi.org/10.1371/journal.pone.0021987
Fransen, C.H.J.M. (2006) On Pontoniinae (Crustacea, Decapoda, Palaemonidae) collected from ascidians. Zoosystema, 28 (3), 713–746.
Fujino, T. & Miyake, S. (1968) Description of two new species of pontoniid shrimps (Crustacea, Decapoda, Palaemonidae) commensal with sponges. OHMU, Occasional Papers of Zoological Laboratory, Faculty of Agriculture, Kyushu University, 1, 85–96.
Marin, I. & Chan, T.-Y. (2013) Typtonomenaeus formosanus gen. et sp. nov., a new sponge-associated pontoniine shrimp (Crustacea: Decapoda: Palaemonidae: Pontoniinae) from northern Taiwan. Zootaxa, 3664 (1), 45–56.
http://dx.doi.org/10.11646/zootaxa.3664.1.2
Rafinesque, C.S. (1815) Analyse de la nature ou tableau de l’univers et des corps organises. Aux dépens de l'auteur, Palerme, 224 pp.
https://doi.org/10.5962/bhl.title.106607