New giant genus of Parabathynellidae (Crustacea: Bathynellacea): first record of Bathynellacea in an Australian cave
Abstract
A new genus and species of Parabathynellidae (Crustacea: Bathynellacea), Megabathynella totemensis Camacho & Abrams gen. et sp. nov., is described from the Northern Territory, Australia. This species is the first to be described from an Australian cave. It is a new giant species (4 to 6 mm). The new species displays several unique morphological character states within Parabathynellidae and is the only known species with: more than 12 articles on antennules, with a short, curved barbed seta on each article from the fifth; eight setae on the last article of antennae; more than three setae on the mandibular palp; up to 17 articles on the exopod of the thoracopods, without ctenidia but with a strong spine on each article at the base of the external seta; strong row of pair of spines on latero-external side of second article of endopod in all thoracopods; the male thoracopod VIII is different from all those known; more than 50 spines on the sympod of the uropod and more than 35 spines on the furcal rami. Specimens of the new species are morphologically different from all known species, but more closely resemble some giant species of the genera Kampucheabathynella (Asia), and Billibathynella and Brevisomabathynella (Australia).
References
Abrams K.M., Guzik M.T., Cooper S.J.B., Humphreys W.F., King R.A., Cho J-L. & Austin A.D. 2012. What lies beneath: Molecular phylogenetics and ancestral state reconstruction of the ancient subterranean Australian Parabathynellidae (Syncarida, Crustacea). Molecular Phylogenetics and Evolution 64: 130–164. https://doi.org/10.1016/j.ympev.2012.03.010
Abrams K., Rachael A.C., King A., Michelle A.B., Guzik M.T., Steven A., Cooper S.J.B. & Austin A.D. 2013. Molecular phylogenetic, morphological and biogeographic evidence for a new genus of parabathynellid crustaceans (Syncarida: Bathynellacea) from groundwater in an ancient southern Australian landscape. Invertebrate Systematics 27: 146–172. https://doi.org/10.1071/IS12033
Asmyhr M.G. & Cooper S.J.B. 2012. Difficulties barcoding in the dark: the case of crustacean stygofauna from eastern Australia. Invertebrate Systematics 26: 583–591. https://doi.org/10.1071/IS12032
Bennelongia 2012. Subterranean Fauna Desktop Study and Field Survey for the Sorby Hills Project. Report 2012/140, Bennelongia Pty Ltd, Jolimont.
Camacho A.I. & Leclerc P., 2022. A new species of the genus Siambathynella Camacho, Watiroyram & Brancelj, 2011 (Crustcaea, Bathynellacea, Parabathynellidae) from a Thai cave. Subterranean Biology 44: 139–152. https://doi.org/10.3897/subtbiol.44.93661
Camacho A.I., Mas-Peinado P., Ranga Reddy Y., Bandari E., Shaik S., Perina G., Dorda B.A., Casado A. & Rey I. 2021. An integrated approach to re-evaluate the validity of the family Leptobathynellidae (Crustacea: Bathynellacea). Zoological Journal of the Linnean Society 192: 853–895. https://doi.org/10.1093/zoolinnean/zlaa121
Cho J.-L. & Humphreys W.F. 2010. Ten new species of the genus Brevisomabathynella Cho, Park & Ranga Reddy, 2006 (Malacostraca, Bathynellacea, Parabathynellidae) from Western Australia. Journal of Natural History 44 (17–18): 993–1079. https://doi.org/10.1080/00222930903537066
Cho J.-L., Park J.G. & Humphreys W.F. 2005. A new genus and six species of the Parabathynellidae (Bathynellacea, Syncarida) from the Kimberley region, Western Australia. Journal of Natural History 39: 2225–2255. https://doi.org/10.1080/00222930400014148
Cook B.D, Abrams K.M, Marshall J., Perna C.N., Choy S., Guzik M.T. & Cooper S.J.B. 2012. Species diversity and genetic differentiation of stygofauna (Syncarida: Bathynellacea) across an alluvial aquifer in north-eastern Australia. Australian Journal of Zoology 60: 152–158. https://doi.org/10.1071/ZO12061
Guzik M.T., Abrams K.M., Cooper S.J.B., Humphreys W.F., Cho J.-L. & Austin A.D. 2008. Phylogeography of the ancient Parabathynellidae (Crustacea:Bathynellacea) from the Yilgarn region of Western Australia. Invertebrate Systematics 22: 205–216. https://doi.org/10.1071/IS07040
Humphreys W.F. 1999. Groundwater Fauna Sampling in the Kimberley North of 16°S and East of 128°E. A Report for Kinhill Pty Ltd pertaining to Stage 2 (M2): Ord River Irrigation Area Project. Western Australian Museum, Perth.
Little J. & Camacho A.I. 2017. Morphological and molecular characterisation of a new genus and new species of Parabathynellidae (Crustacea: Syncarida) in Queensland, Australia. Invertebrate Systematics 31: 208–219. https://doi.org/10.1071/IS16054
Little J., Schmidt D.J., Cook B.D., Page T.J. & Hughes J.M. 2016. Diversity and phylogeny of southeast Queensland Bathynellacea. Australian Journal of Zoology 64 (1): 36–47. https://doi.org/10.1071/ZO16005
Matthews E.F., Abrams K.M., Cooper S.J.B., Huey J.A., Hillyer M.J., Humphreys W.F, Austin A.D. & Guzik M.T. 2020. Scratching the surface of subterranean biodiversity: molecular analysis reveals a diverse and previously unknown fauna of Parabathynellidae (Crustacea, Bathynellacea) from the Pilbara, Western Australia. Molecular Phylogenetics and Evolution 142: 106643. https://doi.org/10.1016/j.ympev.2019.106643
Oberprieler S., Rees G., Nielsen D., Shackleton M., Watson G., Chandler L. & Davis J. 2021. Connectivity, not short-range endemism, characterises the groundwater biota of a northern Australian karst system. The Science of the Total Environment 796: 148955. https://doi.org/10.1016/j.scitotenv.2021.148955
Park J.-G. & Cho J.-L. 2016. Fourteen new species of Allobathynella Morimoto and Miura, 1957 from South Korea: with a redescription of A. coreana Morimoto, 1970 (Crustacea, Bathynellacea, Parabathynellidae). Journal of Species Research 5 (1): 49–156. https://doi.org/10.12651/JSR.2016.5.1.049
Perina G. & Camacho A.I. 2016. Permanent slides for morphological studies of small crustaceans: Serban’s method and its variation applied on Bathynellacea (Malacostraca). Crustaceana 89 (10): 1161–1173. https://doi.org/10.1163/15685403-00003576
Perina G., Camacho A.I., Cooper S., Floeckner S., Blyth A.J. & Sacco M. 2023a. An integrated approach to explore the monophyletic status of the cosmopolitan genus Hexabathynella (Crustacea, Bathynellacea, Parabathynellidae): two new species from Rottnest Island (Wadjemup), Western Australia. Systematics and Biodiversity 21 (1): 2151662. https://doi.org/10.1080/14772000.2022.2151662
Perina G., Camacho A., Danks M., White N. & Guzik M.T. 2023b. Two new species of Atopobathynella (Parabathynellidae, Bathynellacea) from the Pilbara region, Australia. Systematics and Biodiversity 21: 2228326. https://doi.org/10.1080/14772000.2023.2228326
Serban E. 1972. Bathynella (Podophallocarida, Bathynellacea). Travaux de l’Institut de Spéologie “Émile Racovitza” 11: 11–225.
Serban E. 1980. La mandibule et l’individualisation des ensembles évolutifs majeurs dans l’ordre des Bathynellacea (Malacostraca: Podophallocarida). Bijdragen tot Dierkunde 50 (1): 155–189. Available from https://repository.naturalis.nl/pub/504107 [accessed 10 Apr. 2024].
Serban E. 1985. Le développement postembryonnaire chez Gallobathynella coiffaiti (Delamare) (Gallobathynellinae: Bathynellidae: Bathynellacea). Travaux de l’Institut de Spéologie “Émile Racovitza” 24: 47–61.
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