Varanus prasinus (SCHLEGEL, 1839)
Can you confirm these amateur observations of Varanus prasinus?
|Higher Taxa||Varanidae, Platynota, Anguimorpha, Sauria, Squamata (lizards)|
|Common Names||E: Emerald Monitor|
|Synonym||Monitor viridis GRAY 1831: 26 (nomen dubium fide MERTENS 1963)|
Monitor prasinus SCHLEGEL 1839: 78
Varanus prasinus — BLEEKER 1856
Monitor beccarii DORIA 1874: 331
Varanus prasinus — BOULENGER 1885: 321
Varanus kordensis — BOULENGER 1885: 322
Varanus kordensis — BOULENGER 1895: 28
Varanus prasinus — DE ROOIJ 1915: 151
Varanus kordensis — DE ROOIJ 1915: 152
Varanus prasinus prasinus — MERTENS 1942
Varanus prasinus kordensis — MERTENS 1942
Varanus prasinus — SPRACKLAND 1991
Varanus prasinus — DE LISLE 1996: 132
Varanus prasinus — COGGER 2000: 371
Varanus kordensis — BÖHME 2002
Varanus kordensis — JACOBS 2003
Varanus (Euprepiosaurus) prasinus — ZIEGLER et al. 2007
Varanus (Hapturosaurus) prasinus — BUCKLITSCH et al. 2016: 50
|Distribution||Australia (Queensland), New Guinea|
Type locality: Fort Du Bus and Oeroe-Langoeroe Bay (as W coast of New Guinea), Irian Jaya, Indonesia.
|Types||Holotype: RMNH 4812|
Syntypes: MSNG = MCG C. E. 28723, other syntypes not found fide COGGER 1983, from Wokam (as Wokan), Aru Ils., Indonesia [Monitor beccarii]
|Diagnosis||Diagnosis (Hapturosaurus): Hapturosaurus is a monophyletic (Ast 2001; Ziegler et al. 2007b) group of medium-sized (Collar et al. 2011), tree monitor lizards from New Guinea and northern Australia which is uniquely defined by the following combination of morphological characters: (1) A long and prehensile tail which is round in cross section together with (2) an elongated body, head, neck, limbs, and digits with strong claws in relation with a highly arboreal live style (Greene 1986; Mendyk & Horn 2011); (3) a partly colourful appearance of bright green, blue or yellow pigmentation in combination with a varying degree of black (including entirely melanistic taxa, such as beccarii and bogerti) often forming a dorsal pattern of more or less distinctive chevrons (Sprackland 1991; Jacobs 2008); (4) elongated dorsal scales separated by numerous rows of tiny granules and with a single distinctly enlarged posterior granulum; in addition, most body scales are roof-shaped and strongly keeled (this study, see Fig. 28); (5) differentiated head scales comprising enlarged supraocular scales and up to three rows of enlarged scales spanning the interorbital region (Koch et al. 2014); (6) lungs with an open intrapulmonary bronchus (Becker et al.1989); and (7) copulatory organs with bilaterally built hemipenial and hemiclitorial paryphasmata (Branch 1982; Böhme 1988; Ziegler & Böhme 1997). Furthermore, Conrad et al. (2011) listed five additional diagnostic morphological synapomorphies (next to 93 molecular synapomorphies; see Ast 2001) for the tree monitors. These are: (1) Palatine longer than wide; (2) parallel-sided (not expanded or tapered) anterior ends of the anterolateral processes of the frontal; (3) presence of a distinct, raised, posterior margin of the anterior narial fossa on the anterodorsal margin of the maxilla; (4) absence of a dorsal keel on the supraoccipital; and (5) crista interfenestralis developed posterolaterally and hides the occipital recess in lateral view (see also part two about the skull in Mertens’ [1942a] monograph).|
|Comment||Synonym partly after COGGER 1983 and MERTENS 1963. V. kordensis has been previously synonymzed with V. prasinus. However, JACOBS (2002) provides evidence that prasinus and kordensis are different species. At least some populations of Varanus prasinus and V. bogerti are paraphyletic (Weijola et al. 2019), and may require taxonomic revision.|
Type species: Varanus prasinus is the type species of the subgenus Hapturosaurus Bucklitsch et al. 2016.
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