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Published August 30, 2025 | Version v1
Taxonomic treatment Open

Exedrobatrachus Richards, Mahony & Donnellan 2025, gen. nov.

Authors/Creators

  • 1. South Australian Museum, North Terrace, Adelaide, SA 5000, Australia & School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia & Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia
  • 2. School of Environmental and Life Sciences, University of Newcastle, University Drive, Callaghan, Newcastle, NSW 2308 Australia
  • 3. Environmental Futures Research Centre, School of Science, University of Wollongong, Wollongong, NSW 2526, Australia
  • 4. Natural History Museum, Cromwell Road, London, SW 7 5 BD, United Kingdom
  • 5. School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
  • 6. Department of Scientific Computing, Florida State University, Tallahassee, FL 32306, United States & Department of Biological Science, Florida State University, Tallahassee, FL 32306, United States
  • 7. Department of Biological Science, Florida State University, Tallahassee, FL 32306, United States
  • 8. Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Herpetologie, Invalidenstrasse 43, 10115 Berlin, Germany
  • 9. South Australian Museum, North Terrace, Adelaide, SA 5000, Australia & School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
  • 10. Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT 2601 Australia
  • 11. Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia & Sydney School of Veterinary Science, B 01, University of Sydney, NSW 2006, Australia
  • 12. South Australian Museum, North Terrace, Adelaide, SA 5000, Australia & Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia

Description

Exedrobatrachus Richards, Mahony & Donnellan, gen. nov.

(Fig. 16)

ZooBank LSID: urn:lsid:zoobank.org:act: 71F5CD28-163F-474F-97BF-66ADD805188E Type species: Litoria biakensis Günther, 2006.

Content: One species— Exedrobatrachus biakensis * (Günther, 2006) comb. nov.

Diagnosis: Exedrobatrachus can be diagnosed from Papuahyla by tubercules on the hindlimb vs. an unornamented hindlimb, by a fusiform vs. right triangular call envelope shape, and 13 sites in the mitochondrial ND4 alignment (Table 3). Exedrobatrachus can be diagnosed from Exochohyla by the absence vs. presence of a rostral spike, the occurrence of small pigmented vs. large unpigmented ova; and from each species of Ischnohyla by species specific combination of each of the four following characters: by small vs. medium (I. nigropunctata and I. umarensis) or large (I. daraiensis and I. gracilis) eggs; pigmented vs. unpigmented (I.gracilis) eggs; absence vs. presence (I. gracilis and I. nigropunctata) of the vomerine teeth; toe discs smaller than finger disc vs. equal (I. gracilis, I. nigropunctata, I. umarensis, and I. vocivincens). Refer to Tables 1 and 2.

Distribution and ecology: Arboreal frogs that are found in swamps with thickets of trees and brush on Biak Island, Papua Province, Indonesia (Günther 2006b).

Etymology: From the Greek ἔξεΔΡος (exedros, away from home) and βάτΡαΧος (batrachos, frog). Both the original batrachos and the Latinized batrachus are masculine (Article 30.1.3). The name alludes to the biogeographically and phylogenetically isolated nature of the lineage.

Remarks: A monotypic genus with a distribution confined to Biak Island, a continental island which harbours a number of endemic vertebrates (Bergmans and Sarbini 1985, Groves and Flannery 1994, Jacobs 2002).

Notes

Published as part of Donnellan, Stephen C., Mahony, Michael J., Esquerré, Damien, Brennan, Ian G., Price, Luke C., Lemmon, Alan, Lemmon, Emily Moriarty, Günther, Rainer, Monis, Paul, Bertozzi, Terry, Keogh, J. Scott, Shea, Glenn M. & Richards, Stephen J., 2025, Phylogenomics informs a generic revision of the Australo-Papuan treefrogs (Anura: Pelodryadidae) in Zoological Journal of the Linnean Society 204, DOI: 10.1093/zoolinnean/zlaf015

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Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/03B387A6220EFFB69C48FA25FB8E51A9

Related works

Is part of
Journal article: 10.1093/zoolinnean/zlaf015 (DOI)
Journal article: http://publication.plazi.org/id/FF8AFFDE2223FF9B9F63F841FFD85752 (URL)
Journal article: http://zoobank.org/B403627-916C-4ED3-ACEE-436ED2CF89E6 (URL)
Is source of
https://biodiversitypmc.sibils.org/collections/plazi/03B387A6220EFFB69C48FA25FB8E51A9 (URL)

Biodiversity

Collection code
LSID
Scientific name authorship
Richards, Mahony & Donnellan
Kingdom
Animalia
Phylum
Chordata
Order
Anura
Family
Pelodryadidae
Genus
Exedrobatrachus
Taxon rank
genus
Taxonomic status
gen. nov.
Taxonomic concept label
Exedrobatrachus Donnellan, Mahony & Richards, 2025

References

  • Gunther R. A new species of treefrog of the genus Litoria (Anura, Hylidae) from Biak Island off northwest New Guinea. Salamandra 2006 b; 42: 117-28.
  • Bergmans W, Sarbini S. Fruit bats of the genus Dobsonia Palmer, 1898 from the Islands of Biak, Owii, Numfoor and Yapen, Irian Java (Mammalia, Megachiroptera). Beaufortia 1985; 34: 181-9.
  • Groves C, Flannery TF. A revision of the genus Uromys Peters, 1867 (Muridae: Mammalia) with descriptions of two new species. Records of the Australian Museum 1994; 46: 145-69. https://doi.org/10.3853/j.0067-1975.46.1994.12
  • Jacobs HJ. Zur morphologischen variabilitat der nominellen Smaragdwaran-Taxa Varanus prasinus (H. Schlegel, 1839) und V. kordensis (A. B. Meyer, 1874), mit bemerkungen zur erstzucht des letzteren. Herpetofauna 2002; 24: 21-34.