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Hypsilurus magnus MANTHEY & DENZER, 2006

IUCN Red List - Hypsilurus magnus - Least Concern, LC

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Higher TaxaAgamidae (Amphibolurinae), Sauria, Iguania, Squamata (lizards) 
Subspecies 
Common Names 
SynonymHypsilurus magnus MANTHEY & DENZER 2006
Gonyocephalus godeffroyi — DE ROOIJ 1909: 377 (not Lophura (Hypsilurus) Godeffroyi PETERS 1867)
Gonyocephalus nigrigularis — BOULENGER 1914: 255 (not Gonyocephalus (Hypsilurus) nigrigularis MEYER 1874)
Gonyocephalus nigrigularis — DE ROOIJ 1915 (part.): 111
Gonyocephalus nigrigularis — DE ROOIJ 1920: 137
Gonyocephalus nigrigularis — DE JONG 1927: 310
Gonocephalus nigrigularis — URBAN 1977: 75, 110 (not Gonyocephalus (Hypsilurus) nigrigularis MEYER 1874)
? Hypsilurus nigrigularis SCHULTE et al., 2003: 600
Hypsilurus magnus — KRAUS 2013 
DistributionPapua, Province of Indonesia, Papua New Guinea (Prince Alexander Mts., Huriak, 3.5846°S, 143.5007°E, 68 m asl.;Madang, West Sepik)

Type locality: Gariau aan het Jamoer meer (Gariau near Lake Jamur, 3°42’S 134°56’E)  
Reproductionoviparous 
TypesHolotype: RMNH 29093 
DiagnosisDiagnosis. Large, long–tailed species (SVL males up to 232, females up to 184 mm [Urban, 1977 as nigrigularis]; TL/SL > 2.8) with homogeneous dorsal scalation and a discontinu¬ous vertebral crest. Scales below the tympanum weakly enlarged, at the angle of the mouth some¬times several more enlarged scales; a row of enlarged submaxillaries present; anterior edge of the gular pouch without enlarged scales.
Hypsilurus magnus differs from H. bruijnii by a higher number of scales between enlarged submaxillaries and infralabials 4 (vs. 3) as well as a SVL up to 232 mm (vs. 143 mm) and dif¬fering colouration in alcohol (greenish grey without or with darker dorsal bands, each en¬closing a light band vs. reddish brown without clear bands); H. modestus by the presence of a dorsal crest (vs. absent); H. auritus, geelvin¬kianus und nigrigularis by the presence of a row of enlarged submaxillaries, a small gular pouch with rounded base near the clavicular region (vs. large with acute base on the chest) as well as a differing gular pouch scalation, anterior half with large scale, posterior with small scales (vs. complete gular pouch with equally sized scales); godeffroyi and schoedei by a higher number of scales between enlarged submaxillaries and infralabials 4 (vs. 3) and a smaller tympanum T/E < 0.76 (vs. > 0.80), additionally from godeffroyi by narrowly spaced and overlapping anterior scales on the gular pouch (vs. widely spaced), a shorter tail TL/SVL < 3.1 (vs. > 3.3), as well as a broader head HW/SVL > 0.145 (vs. < 0.128) and from schoe¬dei by a significantly larger SVL up to 232 mm (vs. < 130); longii by smooth anterior scales on the gular pouch (vs. keeled) and in females as well as younger males an absent V–shaped marking on the nape (vs. present); macrolepis by a shorter tail, TL/SVL < 3.1 (vs. > 3.5), a smaller tympanum T/E < 0.76 (vs. > 0.80) and a significantly larger SVL, up to 232 mm (vs. < 130); binotatus by a discontinuous vertebral crest on the nape (vs. continuous); papuensis by the absence of dark spots on either side of the neck surrounded by a lighter colour above and behind (vs. present); schultzewestrumi by the absence of extremely large plates on the sides of the head (vs. present) and by smaller gular scales ≈ Ø tympanum (vs. several ≥ Ø tympanum) and boydii, spinipes and dilophus by a homogeneous dorsal scalation (vs. heterogeneous) and a longer tail TL/SVL > 3.2 (vs. < 2.3). 
CommentSimilar species: H. bruijnii. 
EtymologyNamed after its large size. 
References
  • CORNING, S. 2015. Die Haltung und Zucht der neuguineischen Winkelkopf­agamen Hypsilurus magnus Manthey & Denzer, 2006 und Hypsilurus cf. capreolatus Kraus & Myers, 2012 Sauria 37 (3): 37-42 - get paper here
  • De JONG,J.K. 1927. Reptiles from Dutch New Guinea. Nova Guinea 15 (3): 296-318
  • de Rooij, N. de 1909. Reptilien (Eidechsen, Schildkröten und Krokodile). Nova Guinea 5: 375-383 - get paper here
  • de Rooij, N. de 1915. The Reptiles of the Indo-Australian Archipelago. I. Lacertilia, Chelonia, Emydosauria. Leiden (E. J. Brill), xiv + 384 pp.
  • Denzer, Wolfgang; Ulrich Manthey 2016. Remarks on the taxonomy and nomenclature of the genus Hypsilurus Peters, 1867 (Reptilia, Agamidae, Amphibolurinae) Zoosyst. Evol. 92 (1): 103–110; DOI: 10.3897/zse.92.7469 - get paper here
  • Kraus, Fred. 2013. Further range extensions for reptiles and amphibians from Papua New Guinea. Herpetological Review 44 (2): 277-280
  • Manthey, U. & Denzer, W. 2006. A revision of the Melanesian-Australian angle head lizards of the genus Hypsilurus (Sauria: Agamidae: Amphibolurinae), with description of four new species and one new subspecies. Hamadryad 30 (1-2): 1 – 40
  • MANTHEY, U. & W. DENZER 2016. Melanesian anglehead lizards of the genus Hypsilurus Peters, 1867 – Part 1: Species from New Guinea Sauria 38 (3): 11 - 36 - get paper here
  • Schulte, James A., II; Melville, Jane; Larson, Allan. 2003. Molecular phylogenetic evidence for ancient divergence of lizard taxa on either side of Wallace's Line. Proceedings: Biological Sciences 270 (1515): 597-604
 
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