Papuan snakes of the genus Aspidomorphus have long been taxonomically problematic, but nomenclature within this group has been stable at three recognized species since 1967. Previous genetic work suggested the presence of a number of cryptic but currently unrecognized candidate species in the genus. In 2004, I obtained a series of Aspidomorphus from Sudest Island, Milne Bay Province, Papua New Guinea that were clearly different from currently recognized species, and I describe that species here as A. dimorphus sp. nov. This species exhibits a striking bimodality in color pattern in adults, here termed the “orange morph” and “dark morph”. This dimorphism is not related to sex, and both forms have earlier been shown to be genetically identical. Description of A. dimorphus sp. nov. begins the process of bringing taxonomic clarity to a genus long held in the grip of nomenclatural stasis. It furthermore highlights again the importance of Sudest Island for biodiversity endemism.
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New Taheitia H. et A. Adams, 1863, with revisional notes on the Papuan Truncatellidae (Caenogastropoda: Truncatelloidea)
Surveys of snails from New Guinea and surrounding islands provide new distributional and ecological data for Truncatellidae from the Papuan Region. We present an annotated checklist of all Papuan Truncatellidae and the first identification key for the terrestrial genus Taheitia H. and A. Adams, 1863. Unlike widespread marine and estuarine species of Truncatella, the Papuan Taheitia usually have single island ranges and are restricted to forested limestone habitats. New anatomical data suggests that many earlier reports of Taheitia with multi-island distributions appear to be the result of confusion between superficially similar species. Eight new Taheitia species are described: T. biaka sp. nov. from Biak, T. bifurca sp. nov. from Manus,T. gebeensis sp. nov. from Gebe, T. gigantea sp. nov. from Waigeo, T. jodiae sp. nov. from New Britain, T. longpela sp. nov. from New Britain, T. malagan sp. nov. from New Ireland, and T. telnovi sp. nov. from Misool.
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- Award ID(s):
- 1902020
- PAR ID:
- 10258445
- Editor(s):
- Telnov, D; Barclay, M; Pauwels, O
- Date Published:
- Journal Name:
- Biodiversity Biogeography and Nature Conservation in Wallacea and New Guinea
- Volume:
- 4
- ISSN:
- 2255-9728
- Page Range / eLocation ID:
- 135–184
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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