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Nannoscincus hanchisteus BAUER & SADLIER, 2000

IUCN Red List - Nannoscincus hanchisteus - Critically Endangered, CR

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Higher TaxaScincidae, Eugongylinae (Eugongylini), Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common Names 
SynonymNannoscincus hanchisteus BAUER & SADLIER 2000: 248
Nannoscincus hanchisteus SADLIER, BAUER & WHITAKER, 2002
Nannoscincus hanchisteus — SADLIER et al. 2014 
DistributionNew Caledonia

Type locality: Pindai, 21° 20’ S, 164° 58’ E  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: MNHN-RA 1997.3799 (formerly AMS R149355). 
DiagnosisDescription: Scalation: Body scales moderately large, smooth, in 20 rows around the body and 48-50 paravertebral scale rows. Frontoparietals fused, nasals moderately separated, one loreal scale, five lower labials, lower eyelid with a semi-transparent dise. 13-14 lamellae beneath fourth toe.

Color: Light to mid brown above, with dark flecks forming a faint, broken vertebral line. Lateral surface darker than dorsal and separated from it by a dark stripe, pale-edged above extending from the posterior margin of the eye to the hindlimbs. Nape with a variably defined pale blotch bordered posteriorly by dark markings. Snout with a faint dark mid-rostral streak. Ventral surface pale with scattered, sometimes dense concentration ofbrown markings at ventrolateral edge, throat with irregular brown markings.

Variation: No significant variation has been noted.

Comparisons: Nannoscincus hanchisteus may be distinguished from members of the N gracilis group by a single loreal scale and five lower labials (versus two loreals and six lower labials) and from N mariei bya distinct ear opening. It differs from N rankini and N greeri in having smooth dorsal scales. It is distinguished from N humectus by having 2 (versus 3) scales between the lower secondary temporal scale and the ear opening, a lower number of paravertebral scale rows (48-50 versus 51-56), and fewer fourth toe lamellae(14 or fewer versus 15 or more). This species is most similar to N exos, from which it differs in having fewer midbody scale rows (20 versus 22) and a less reduced pedal phalangeal formula (2.3.4.5.3 versus 2.3.4.4.3).

Size: Maximum body length 34 mm, body elongate, limbs short, and tail short and stout, about 85% of body length. (Bauer et al. 2000: 198) 
CommentThe original description was supposed to appear as SADLIER, BAUER & WHITAKER, 2000. However, BAUER & SADLIER’s monograph (2000) was published earlier and therefore has to be considered as original description.

Distribution: see map in SADLIER et al. 2014: 56.

Abundance: only known from its original description (Meiri et al. 2017). 
EtymologyThe species name is from the Latinised Greek hanchisteus, for next of kin, and refers to the species close affinities with Nannoscincus humectus. 
References
  • Bauer, A. M. & SADLIER, R. A. 2000. The herpetofauna of New Caledonia. Contributions to Herpetology, 17; Society for Study Amphibians and Reptiles, Ithaca, New York.
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • Sadlier, R. A., A. M. BAUER & A. H. WHITAKER 2002. The scincid lizard genus Nannoscincus from New Caledonia in Southwest Pacific: a review of the morphology and distribution of species in the Nannoscincus mariei species group, including the description of three new species from Province Nord. Zoologica Neocaledonica 5. Systématic et endemisme en Nouvellee-Calédonie. pp 233-255. J. Naut & P. Grandcolas (Eds). Memoires du Muséum national d'Histoire naturelle, Vol. 187 , Paris
  • SADLIER, Ross A.; Aaron M. BAUER, Perry L. WOOD Jr., Sarah A. SMITH, Anthony H. WHITAKER & Todd JACKMAN 2014. Cryptic speciation in the New Caledonian lizard genus Nannoscincus (Reptilia: Scincidae) including the description of a new species and recognition of Nannoscincus fuscus Gunther. Memoires du Museum National d'Histoire Naturelle, 206: 45-68.
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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