Demansia angusticeps (MACLEAY, 1888)
Can you confirm these amateur observations of Demansia angusticeps?
Demansia angusticeps
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| Higher Taxa | Elapidae (Hydrophiinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | |
| Synonym | Diemenia angusticeps MACLEAY 1888 Demansia angusticeps — SHEA & SCANLON 2007 Demansia angusticeps — WALLACH et al. 2014: 213 Demansia angusticeps — EIPPER & EIPPER 2024: 116 |
| Distribution | Australia (Western Australia, Northern Territory: southern Kimberley, from 325 km SW Broome in the south, north-west to Pender Bay, north to “Old Theda” HS [the only record in the northern or central Kimberley] and east to the Victoria River valley). Type locality: from the vicinity of King’s Sound, WA. |
| Reproduction | oviparous |
| Types | Holotype: AMS (AM) R31921 |
| Diagnosis | Diagnosis: A moderately large (SVL to 676 mm) Demansia lacking dark or pale nuchal collars or dark spots on anterior ventrals, but possessing a dark transrostral streak that is usually excluded from the orbit and well-developed pale pre- and postocular bars. |
| Comment | Subspecies: Demansia olivacea rufescens STORR 1978 and Demansia olivacea calodera STORR 1978 have been elevated to species status. Synonymy: Diemenia angusticeps has been considered as a synonym of Demansia olivacea since BOULENGER 1896 until its resurrection by SHEA & SCANLON 2007. Phylogenetics: D. angusticeps nests within D. reticulata in a mitochondrial tree, but is separate in a tree based on nuclear DNA. Venomous! Reference images: see Uetz et al. 2024 for high-resolution reference images for this species. |
| Etymology | Although not explicitly stated by Macleay, the name angusticeps is presumably derived from the Latin angustus (narrow) and -ceps (head), calling attention to the long narrow head of this and other Demansia. |
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