An Elusive New Genus and Species of Subterranean Amphipod (Hadzioidea: Eriopisidae) from Barrow Island, Western Australia
Barrow Island, off the coast of north-west Western Australia, supports a rich subterranean amphipod fauna amid major resource development. Previous biological surveys for the purpose of species documentation and environmental impact assessment have helped to uncover a once overlooked genus of amphip...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Diversity |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-2818/17/2/84 |
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| Summary: | Barrow Island, off the coast of north-west Western Australia, supports a rich subterranean amphipod fauna amid major resource development. Previous biological surveys for the purpose of species documentation and environmental impact assessment have helped to uncover a once overlooked genus of amphipod from the family Eriopisidae. Here, we describe this new genus and one new species, <i>Aenigmata megabranchia</i> Stringer and King gen. et sp. nov., using a combination of molecular and morphological data, and present a key to Western Australian subterranean eriopisid genera. The new genus represents a distinct, genetically divergent lineage that can be distinguished from all other eriopisid genera by the following characters: the shape and setation of the mouthparts, the enlarged coxal gills, the straight posterior margin of the first coxa, and an almost entirely cleft telson. This research enhances our knowledge of the Australian Eriopisidae, emphasises the importance of Barrow Island as a key location for subterranean amphipod fauna, and will assist in the future recognition of the species for conservation. |
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| ISSN: | 1424-2818 |