A new species of land snail, Xanthomelon amurndamilumila, from the North East Isles off Groote Eylandt (= Ayangkidarrba), Gulf of Carpentaria, Australia (Stylommatophora, Camaenidae)
Authors/Creators
- 1. Australian Museum Research Institute, Sydney, Australia
- 2. Museum and Art Gallery of the Northern Territory, Darwin, Australia
- 3. EcoScience NT, Darwin, Australia
- 4. Ecological Management Services Pty Ltd., Coolum Beach, Australia
Description
This paper introduces Xanthomelon amurndamilumila sp. nov., a newly-discovered land snail species inhabiting the North East Isles, offshore from Groote Eylandt (= Ayangkidarrba), north-western Gulf of Carpentaria, in the Northern Territory, Australia. Specimens of this species were first collected during the 2021 Bush Blitz expedition to Groote Eylandt, a large offshore archipelago previously unexplored for land snails. The taxonomic status of the new species was established through a comprehensive analysis of comparative morphology and mitochondrial genetics: X. amurndamilumila forms a maximally supported clade closely related to X. arnhemense and is characterised by a unique combination of morphological characteristics, including smaller shell size, distinctive sculpture of collabral ridges and specific features of its reproductive anatomy. The genetic divergence and phylogenetic relationships suggest historical isolation. While the discovery of X. amurndamilumila sp. nov. enriches our understanding of land snail diversity in the Northern Territory, its conservation status is of concern on North East Island because of habitat degradation caused by feral deer.
Files
ZSE_article_113243.pdf
Files
(4.4 MB)
| Name | Size | Download all |
|---|---|---|
|
md5:40cdd0bfd1b9e90e7e0bfddcdbc4d37e
|
4.4 MB | Preview Download |
System files
(73.6 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:ba65d7c89b078610416bd5b32bcc7ab2
|
73.6 kB | Download |
Linked records
Additional details
References
- Chiba S (1999) Accelerated evolution of land snails Mandarina in the oceanic Bonin Islands: Evidence from mitochondrial DNA sequences. Evolution; International Journal of Organic Evolution 53(2): 460–471. https://doi.org/10.2307/2640782
- Folmer O, Black M, Hoeh W, Lutz R, Vrijenhoek R (1994) DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Molecular Marine Biology and Biotechnology 3: 294–299.
- Kalyaanamoorthy S, Minh BQ, Wong TKF, von Haeseler A, Jermiin LJ (2017) ModelFinder: Fast model selection for accurate phylogenetic estimates. Nature Methods 14(6): 587–589. https://doi.org/10.1038/nmeth.4285
- Katoh K, Misawa K, Kuma K, Miyata T (2002) MAFFT: A novel method for rapid multiple sequence alignment based on fast Fourier transform. Nucleic Acids Research 30(14): 3059–3066. https://doi.org/10.1093/nar/gkf436
- Köhler F (2011) The camaenid species of the Kimberley Islands, Western Australia (Stylommatophora: Helicoidea). Malacologia 54(1–2): 203–406. https://doi.org/10.4002/040.054.0108
- Köhler F, Burghardt I (2016) Cryptic diversity in a widespread land snail: Revision of the genus Xanthomelon E. von Martens, 1860 from the Australian Monsoon Tropics (Pulmonata, Camaenidae). Zoologica Scripta 45(2): 127–144. https://doi.org/10.1111/zsc.12144
- Köhler F, Criscione F (2015) A molecular phylogeny of camaenid land snails from north-western Australia unravels widespread homoplasy in morphological characters (Gastropoda, Helicoidea). Molecular Phylogenetics and Evolution 83: 44–55. https://doi.org/10.1016/j.ympev.2014.11.009
- Köhler F, Shea M (2022) A new cryptic species of land snail from the Northern Territory, Australia (Stylommatophora, Camaenidae, Parglogenia). Zoosystematics and Evolution 98(2): 427–433. https://doi.org/10.3897/zse.98.93851
- Minh BQ, Nguyen MA, von Haeseler A (2013) Ultrafast approximation for phylogenetic bootstrap. Molecular Biology and Evolution 30(5): 1188–1195. https://doi.org/10.1093/molbev/mst024
- Nguyen L-T, Schmidt HA, von Haeseler A, Minh BQ (2015) IQ-TREE: A fast and effective stochastic algorithm for estimating Maximum-Likelihood phylogenies. Molecular Biology and Evolution 32(1): 268–274. https://doi.org/10.1093/molbev/msu300
- Sutcharit C, Asami T, Panha S (2007) Evolution of whole-body enantiomorphy in the tree snail genus Amphidromus. Journal of Evolutionary Biology 20(2): 661–672. https://doi.org/10.1111/j.1420-9101.2006.01246.x
- Willan RC, Bourke A (2022) Groote Eylandt Bush Blitz Molluscs. 16 pp. In [Editor]: Department of Climate Change, Energy, the Environment and Water [DEW]. Groote Eylandt, Northern Territory 2021: Bush Blitz Expedition Report. Department of Climate Change, Energy, the Environment and Water, Canberra, CC BY 4.0.
- Willan RC, Köhler F, Kessner V, Braby MF (2009) Description of four new species of limestone-associated Torresitrachia land snails (Mollusca: Pulmonata: Camaenidae) from the Katherine District of the Northern Territory, with comments on their conservation. The Beagle. Beagle 25: 87–102. https://doi.org/10.5962/p.287452