Abstract
A new diogenid hermit crab with bright-white chelae, Diogenes albimanus n. sp., is described and illustrated, based on a single ovigerous female collected from KwaZulu-Natal, South Africa. The new species is compared to morphologically similar species, in particular to D. holthuisi and D. dorotheae, from which it is distinguishable by the shape and armature of the telson; and also to the superficially-similar South African D. extricatus, from which it differs by having the unarmed dorsal margins of the propodi and meri of the pereopods, as opposed to being armed with rows of strong spines. The unusually white chelae are similar in colour to those of D. takedai, but the coloration of all other parts is different in these two species. High quality macro photographs, a high-resolution microCT (μCT) scan of the whole animal, and the reference to the repository of the molecular barcode of the new species are provided.
References
Asakura, A. & Tachikawa, H. (2010) Diogenes holthuisi, a new species of hermit crab (Decapoda, Anomura, Diogenidae) from shallow waters of the Ogasawara (Bonin) Islands, Japan. In: Fransen, C.H.J.M., De Grave, S. & Ng, P.K.L. (Eds.), Studies on Malacostraca: Lipke Bijdeley Holthuis Memorial Volume. Crustaceana. Monographs 14. Koninklijke Brill NV, Leiden, pp. 133–144.
Balss, H. (1912) Paguriden. In: Chun, C. (Ed.), Wissenschaftliche Ergebnisse der deutschen Tiefsee-Expedition auf dem Dampfer “Valdivia” 1898–1899. Gustav Fischer, Jena, pp. 85–124.
Balss, H. (1921) Crustacea VI: Decapoda Anomura (Paguridea) und Brachyura (Dromiacea bis Brachygnatha). In: Michaelsen, W. (Ed.), Beiträge zur Kenntnis der Meeresfauna Westafrikas. L. Friederichsen & Co., Hamburg, pp. 37–67.
Barnard, K.H. (1947) Descriptions of new species of South African decapod Crustacea, with notes on the synonymy and new records. Annals of the South African Museum, 12, 361–392.
Barnard, K.H. (1950) Descriptive catalogue of South African decapod Crustacea (crabs and shrimps). Annals of the South African Museum, 38, 1–838.
Dana, J.D. (1851) Conspectus crustaceorum quae in orbis terrarum circumnavigatione, Carolo Wilkes e classe reipublicae foederatae duce, lexit et descripsit. Proceedings of the Academy of Natural Sciences of Philadelphia, 5, 267–272.
Emmerson, W.D. (2016a) A guide to, and checklist for, the Decapoda of Namibia, South Africa and Mozambique. Vol. 2. Cambridge Scholars Publishing, Newcastle upon Tyne, 645 pp.
Emmerson, W.D. (2016b) A guide to, and checklist for, the Decapoda of Namibia, South Africa and Mozambique. Vol. 3. Cambridge Scholars Publishing, Newcastle upon Tyne, 711 pp.
Fabricius, J. C. (1798) Supplementum Entomologiae systematicae. apud Proft et Storch, Hafniae, ii + 572 pp.
Faulwetter, S., Vasileiadou, A., Kouratoras, M., Dailianis, T. & Arvanitidis, C. (2013) Micro-computed tomography: introducing new dimensions to taxonomy. Zookeys, 263, 1–45.
https://doi.org/10.3897/zookeys.263.4261Heller, C. (1865) Crustaceen. In: Reise der österreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wüllerstorf-Urbair. Zoologischer Theil. Kaiserlich-Königliche Hof- und Staatsdruckerei, Wien, 280 pp.
Henderson, J.R. (1888) Report on the Anomura collected by H.M.S. Challenger during the years 1873–76. In: Scientific Results of the Exploratory Voyage of HMS Challenger. Zoology. Vol. 27. Morrison and Gibb, Edinburgh, pp. 1–221
Henderson, J.R. (1893) A contribution to Indian carcinology. Transactions of the Linnean Society of London, 1888–94, Series 2, Zoology, 5, 325–458.
https://doi.org/10.1111/j.1096-3642.1893.tb00653.xKensley, B. (1969) Decapod Crustacea from the south-west Indian Ocean. Annals of the South African Museum, 52, 149–181.
Kensley, B. (1981) On the zoogeography of southern African decapod Crustacea, with a distributional checklist of the species. Smithsonian Contributions to Zoology, 338, 1–64.
https://doi.org/10.5479/si.00810282.338Komai, T., Liang, J. & Yang, T. (2012) Records of four species of the shallow water hermit crab genus Diogenes (Crustacea: Decapoda: Anomura: Diogenidae) from southern China, with description of a new species. Journal of Natural History, 46, 1219–1248.
https://doi.org/10.1080/00222933.2011.654279Komai, T., Reshmi, R. & Kumar, A.B. (2013) A new species of the hermit crab genus Diogenes (Crustacea: Decapoda: Anomura: Diogenidae) from southern India. Zootaxa, 3613 (4), 380–390.
https://doi.org/10.11646/zootaxa.3613.4.5Krauss, F. (1843) Die Südafrikanischen Crustaceen. E. Schweizerbartsche Verlagsbuchhandlung, Stuttgart, 68 pp.
Landschoff, J. & Lemaitre, R. (2017) Differentiation of three common deep-water hermit crabs (Crustacea, Decapoda, Anomura, Parapaguridae) from the South African demersal abundance surveys, including the description of a new species of Paragiopagurus Lemaitre, 1996. ZooKeys, 676, 21–45.
https://doi.org/10.3897/zookeys.676.12987Landschoff, J., du Plessis, A. & Griffiths, C.L. (2017) Supporting data for “A micro X-ray computed tomography dataset of South African hermit crabs (Crustacea: Decapoda: Anomura: Paguroidea)”. GigaScience Database.
https://doi.org/10.5524/100364
Landschoff, J., du Plessis, A. & Griffiths, C.L (2018) A micro X-ray computed tomography dataset of South African hermit crabs (Crustacea: Decapoda: Anomura: Paguroidea), containing scans of two rare specimens and of three recently described species. GigaScience. [in press B]
McLaughlin, P.A., Komai, T., Lemaitre, R. & Rahayu, D.L. (2010) Annotated checklist of anomuran decapod crustaceans of the world (exclusive of the Kiwaoidae and families Chirostylidae and Galatheidae of the Galatheoidae) Part I – Lithodoidea, Lomisoidea and Paguroidea. Raffles Bulletin of Zoology, 23, 5–107.
Morgan, G. & Forest, J. (1991) Seven new species of hermit crabs from Northern and Western Australia (Decapoda, Anomura, Diogenidae). Bulletin du Muséum national d’Histoire naturelle, Section A, Zoologie, Biologie et Ecologie Animales, Paris, 4e Série, 12, 649–689.
McLaughlin, P. & Türkay, M. (2008) Diogenes. In: Lemaitre, R. & McLaughlin, P. (2017) World Paguroidea & Lomisoidea database. Accessed through: World Register of Marine Species. Available from: http://www.marinespecies.org/aphia.php?p=taxdetails&id=106843 (accessed 26 July 2017)
Ortmann, A.E. (1892) Die Decapoden-Krebse des Strassburger Museums, mit besonderer Berücksichtigung der von Herrn Dr. Döderlein bei Japan und bei den Liu-Kiu-Inseln gesammelten und zur Zeit im Strassburger Museum aufbewahrten Formen. IV Theil. Die Abtheilungen Galatheidea und. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Thiere, 6, 240–326.
https://doi.org/10.5962/bhl.part.26455du Plessis, A., le Roux, S.G. & Guelpa, A. (2016) The CT Scanner Facility at Stellenbosch University: An open access X-ray computed tomography laboratory. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 384, 42–49.
https://doi.org/10.1016/j.nimb.2016.08.005Rahayu, D.L. (2012) A new species of the hermit crab genus Diogenes Dana, 1851 (Decapoda, Anomura, Diogenidae) from Lombok, Indonesia. In: Komatsu, H., Okuno, J. & Fukuoka, K. (Eds.), Studies on Eumalacostraca: a homage to Masatsune Takeda. Crustaceana. Monographs 17. Koninklijke Brill NV, Leiden & Boston, pp. 263–274.
Rahayu, D.L. (2015) New record and new species of the hermit crab genus Diogenes Dana, 1851 (Decapoda: Anomura: Diogenidae) from Singapore. Raffles Bulletin of Zoology, 31, 182–192.
Ratnasignham, S. & Hebert, P.D.N. (2007) BOLD: The Barcode of Life Data System (http://www.barcodinglife.org). Molecular Ecology Notes, 7, 355–364.
https://doi.org/10.1111/j.1471-8286.2007.01678.xSiddiqui, F.A. & McLaughlin, P.A. (2003) A new species of the hermit crab genus Diogenes (Decapoda: Anomura: Paguroidea: Diogenidae) from Pakistan, with a comparative diagnosis of D. guttatus Henderson, 1888. Proceedings of the Biological Society of Washington, 116, 956–966.
Stebbing, T.R.R. (1910) General catalogue of South African Crustacea (Part V. of S. A. Crustacea, for the Marine Investigations in South Africa). Annals of the South African Museum, 6, 281–593.
https://doi.org/10.5962/bhl.part.15558Stimpson, W. (1858) Prodromus descriptionis animalium evertebratorum, quae in expeditione ad oceanum Pacificum septentrionalem, a Republica Federate missa, Cadwaldaro Ringgold et Johanne Rodgers ducibus, obseravit et descripsit. Proceedings of the Academy of Natural Sciencs of Philadelphia, 7, 225–252.
Xiao, L.-C., Wang, Y.-L. & Sha, Z.-L. (2015) A new species of the genus Diogenes (Decapoda, Anomura, Diogenidae) from the South China Sea. Crustaceana, 88, 1439–1445.
https://doi.org/10.1163/15685403-00003497