Lygosoma quadrupes (LINNAEUS, 1766)
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Lygosoma quadrupes
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| Higher Taxa | Scincidae, Lygosominae (Lygosomini), Scincoidea, Sauria, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Short-limbed Supple Skink, Linnaeus' Writhing Skink G: Asiatischer Schlankskink |
| Synonym | Anguis quadrupes LINNAEUS 1766: 390 Lacerta serpens BLOCH 1776 Lacerta abdominalis THUNBERG 1787 Chalcida serpens — MEYER 1795: 31 Scincus brachypus SCHNEIDER 1799: 192 (or 1801) Seps pentadactylus DAUDIN 1802 Mabuya serpens — FITZINGER 1826 Lygosoma serpens — HARDWICKKE & GRAY 1827 Podophis quadrupes — WIEGMANN 1834 Lygosoma abdominalis GRAY 1839: 332 Lygosoma brachypoda DUMÉRIL & BIBRON 1839: 721 Podophis chalcides GRAY 1845 Lygosoma brachypoda — GRAVENHORST 1851: 367 Eumeces chalcides — GÜNTHER 1864 Eumeces chalcides — LEIDY 1884: 66 (?) Lygosoma chalcides — BOULENGER 1887: 340 Lygosoma chalcides — TAYLOR 1922: 233 Lygosoma quadrupes — COCHRAN 1930 Lygosoma quadrupes — SMITH 1935: 290 Lygosoma quadrupes — TAYLOR 1963: 1049 Lygosoma quadrupes — GREER 1970 Lygosoma quadrupes — BROWN & ALCALA 1980: 108 Gongylus brachypoda — FRANK & RAMUS 1995: 187 Lygosoma quadrupes — MANTHEY & GROSSMANN 1997: 267 Lygosoma quadrupes — COX et al. 1998: 115 Lygosoma quadrupes — GAULKE 1999 Lygosoma quadrupes — ZIEGLER et al. 2007 Lygosoma quadrupes — KOCH 2012 Lygosoma quadrupes — SILER et al. 2018 Lygosoma quadrupes — FREITAS et al. 2019 |
| Distribution | Indonesia (restricted to Java by Siler et al. 2018) Type locality: Java. |
| Reproduction | oviparous (not imputed, fide Zimin et al. 2022) |
| Types | Holotype: unlocated; no depository indicated by Linnaeus. Catalogues of Linnaean types in the Stockholm and Uppsala collections do not list this species (Lonnberg, 1896; Andersson, 1899, 1900), and Das (2012) was similarly unable to identify any type specimen. Siler et al. (2018) erroneously list ZMB 1276 as a syntype. Syntype: ZMB 1276 (see Bauer & Günther, 2006). Bloch (1776) redescribed this species based on two specimens and provided illustrations of both. Investigation by Bauer and Günther (2006) revealed that only a single syntype of this species remains (ZMB 1276) which was the larger of the two specimens illustrated in Bloch’s (1776) redescription and that the missing syntype may have been lost or destroyed prior to the receipt of these specimens to ZMB (Siler et al. 2018). [Lacerta serpens] |
| Diagnosis | Diagnosis (genus): Lygosoma can be identified by the following combination of characters: (1) body size small to large (SVL 49–168 mm); (2) trunk moderately elongate to elongate (AGD 58–93% SVL); (3) digits short (FinIIILam 4–9, ToeIVLam 5–13); (4) MBSRC 25–38; (5) PVSRC 84–123; (6) lower eyelid scaly; (7) supranasal scales in contact medially or not in contact medially, usually fully or partially fused with nasals; (8) prefrontals not in contact medially; (9) frontoparietal single or paired; (10) parietals in contact medially posterior to interparietal; (11) enlarged nuchal scales present or absent; and (12) palatine bones with posteriomedially projecting processes, pterygoids emarginated along posterior edge [Freitas et al. 2019]. |
| Comment | Synonymy after SMITH 1935. The name Podophis has been also suggested for an extinct snake, Podophis descouensi RAGE & ESCUILLIÉ 2000. Later this name was replaced by Eupodophis descouensi RAGE & ESCUILLIÉ 2002. Lygosoma (Siaphos) lacertosum from Werner 1917 cannot be assigned to any known species given that the type specimen has been lost (J. Hallermann, pers. comm. 20 Dec 2013). Phylogenetics: The genus Lygosoma s.s. is not monophyletic, with the African genera Mochlus and Lepidothyris nested in Lygosoma s.s. For a phylogenetic analysis of the subfamily Lygosominae see Ghosh et al. 2023. Type Species: Anguis quadrupes LINNAEUS 1766 is the type species of the genus Lygosoma HARDWICKKE & GRAY 1827. Lygosoma is also the type genus of the (sub-) family Lygosominae (or Lygosomidae). Note that the correct group name is actually Lygosomatinae (-idae), following Article 29 of the Code. However, prevailing usage dictates that the incorrect but established form of the family group name be used (Allen et al. 2017). Lygosoma is also the type genus of the family Lygosomidae Hedges & Conn 2012: 28 and the subfamily Lygosominae Gray 1845 in which Shea 2021 included the tribus Lygosomini Gray 1845, Ateuchosaurini Hedges 2014 (here: Ateuchosaurinae), Tiliquini Gray 1845 (here: Egerniinae), Eugongylini Welch 1982 (here: Eugongylinae), Ristellini Hedges 2014 (here: Ristellinae), Sphenomorphini Welch 1982 (here: Sphenomorphinae), and Mabuyini Mittleman 1952 (here: Mabuyinae). The generic assignments to Lygosominae in this database follows Hedges 2014. Key: Geissler et al. 2011 provide a key to the Lygosoma of Indochina. Distribution: reports from Cambodia, Laos, West Malaysia, Thailand, and Vietnam represent L. siamensis SILER et al. 2018. Habitat: forested habitats at lower elevations (Siler et al. 2018) Limb morphology: Reduced limbs. |
| Etymology | Named after the fact that this species has 4 reduced limbs (Latin pes = foot), which is misleading as all species have 4 limbs. However, in the past the genus also included limb-reduced species, now assigned to other genera (e.g. Anomalopus or Lerista). Lygosoma means ‘writhing body’ in Greek (lygos = writhe, soma = body). Genus names ending in -soma are feminine (Böhme & Denzer 2019). However, Ganesh 2017 claims that Lygosoma is neuter, without further explanation. |
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