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Tytthoscincus sibuensis (GRISMER, 2006)

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Higher TaxaScincidae, Sphenomorphinae (Sphenomorphini), Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Sibu Island Forest Skink 
SynonymSphenomorphus sibuensis GRISMER 2006
Sphenomorphus sibuensis — GRISMER 2011
Tytthoscincus sibuensis — GRISMER et al. 2016 
DistributionWest Malaysia (Pulau Sibu, Johor)

Type locality: at sea level on Pulau Sibu, Johor, West Malaysia in coastal lowland forest. Sex undeterminable.  
TypesHolotype: ZRC 2.6160, juvenile, collected 10 July 2004 by P.L. Wood, Jr. beneath a rotten log. 
DiagnosisDiagnosis: Sphenomorphus sibuensis can be distinguished from all other Sundaland species of Sphenomorphus by the unique combination of having 29 smooth, midbody scales; 58 paravertebral scales; 52 ventral scales; four supraoculars; parietals contacting supraoculars; two enlarged, two posteriormost superciliary scales projecting dorsomedially; prefrontals in contact; one loreal scale; six supralabial scales; five infralabial scales; nine keeled, subdigital lamellae beneath the fourth toe; two enlarged, preanal scales; adpressed limbs not overlapping; body bands absent; no dark dorsolateral stripe; distinct, white, dorsolateral stripe extending to midway down tail. 
EtymologyNamed after its type locality. 
  • Grismer, L. Lee 2006. Two new species of skinks (Genus Sphenomorphus Fitzinger 1843) from the Seribuat Archipelago, West Malaysia. Herpetological Natural History 9 (2): 151-162.
  • Grismer, L. Lee. 2008. A new species of insular skink (Genus Sphenomorphus Fitzinger 1843) from the Langkawi Archipelago, Kedah, West Malaysia with the first report of the herpetofauna of Pulau Singa Besar and an updated checklist of the herpetofauna of Pulau Langkawi. Zootaxa 1691: 53-66 - get paper here
  • GRISMER, L. LEE; & EVAN S. H. QUAH 2019. An updated and annotated checklist of the lizards of Peninsular Malaysia, Singapore, and their adjacent archipelagos. Zootaxa 4545 (2): 230–248 - get paper here
  • GRISMER, L. LEE; MOHD ABDUL MUIN, PERRY L. WOOD, JR., SHAHRUL ANUAR, & CHARLES W. LINKEM 2016. The transfer of two clades of Malaysian Sphenomorphus Fitzinger (Squamata: Scincidae) into the genus Tytthoscincus Linkem, Diesmos, & Brown and the description of a new Malaysian swamp-dwelling species. Zootaxa 4092 (2): 231–242 - get paper here
  • Grismer, L.L. 2011. Amphibians and reptiles of the Seribuat Archipelago. Edition Chimaira, Frankfurt, 239 pp.
  • Grismer, L.L. 2011. Lizards of Peninsular Malaysia, Singapore and their adjacent archipelagos. Edition Chimaira, Frankfurt, 728 pp. [review in Herp. Rev. 43: 155] - get paper here
  • Grismer, L.L.; Ahmad, N. & Kin Onn, C. 2009. A new, diminutive, upland Sphenomorphus Fitzinger 1843 (Squamata: Scincidae) from the Belum-Temengor Forest Complex, Peninsular Malaysia. Zootaxa 2312: 27–38 - get paper here
  • Grismer, L.L.; Wood Jr., P.L. & Grismer, J.L. 2009. A New Insular Species of Skink of the Genus Sphenomorphus Strauch 1887 (Squamata: Scincidae) from Pulau Perhentian Besar, Terengganu, Peninsular Malaysia. Tropical Life Sciences Research, 20(1): 51–69 - get paper here
  • Grismer, L.Lee; Perry L. Wood, Jr., Kelvin K. P. Lim & Lim J. Liang 2017. A new species of swamp-dwelling skink (Tytthoscincus) from Singapore and Peninsular Malaysia. RAFFLES BULLETIN OF ZOOLOGY 65: 574–584 - get paper here
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