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Madascincus nanus (ANDREONE & GREER, 2002)

IUCN Red List - Madascincus nanus - Vulnerable, VU

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Higher TaxaScincidae, Scincinae, Scincoidea, Sauria, Squamata (lizards)
Common Names 
SynonymAmphiglossus nanus ANDREONE & GREER 2002: 144
Amphiglossus nanus — SCHMITZ et al. 2005 
DistributionNE Madagascar

Type locality: at Anjanaharibe-Sud Massif, Analabe Valley, Campsite W1, Befandriana Fivondronana, Mahajanga Faritany (Majunga Province),
14°46'S, 49°27'E, elevation 1000 m.  
Reproductionoviparous (phylogenetic imputation, fide Zimin et al. 2022) 
TypesHolotype: MRSN R1803 
DiagnosisDiagnosis: Differs from all other species of Amphiglossus except A. macrolepis (holotype and only known specimen examined: BMNH 1946.8.21.23) by its very small size (SVL < 33.5 mm) and loreal not extending ventrally to supralabial row. Distinguished from A. macrolepis by its possibly even smaller size, with maximum SVL of 29mm instead of 33.5mm; separation of loreal from supralabial row by contact between postnasal and enlarged presubocular instead of by contact between postnasal and preocular (Fig. 7); scales between lower secondary temporal and ear opening two instead three; longitudinal scale rows at mid-body 20 instead of 18, and subdigital lamellae on fourth digit of pes 6±9 instead of 5 (Andreone et al. 2002). 
EtymologyNamed after the Greek word “nanos” = small, dwarf (maximum SVL =29 mm). 
  • Andreone, F. & Greer, A.E. 2002. Malagasy scincid lizards: descriptions of nine new species, with notes on the morphology, reproduction and taxonomy of some previously described species (Reptilia, Squamata: Scincidae). Journal of Zoology 258, 139-181 - get paper here
  • Miralles, Aurélien; Jörn Köhler, Frank Glaw, Miguel Vences 2016. Species delimitation methods put into taxonomic practice: two new Madascincus species formerly allocated to historical species names (Squamata, Scincidae). Zoosyst. Evol. 92 (2): 257–275; DOI 10.3897/zse.92.9945 - get paper here
  • Schmitz, A.; M.C. Brandley; P. Mausfeld; M. Vences; F. Glaw; R.A. Nussbaum and T.W. Reeder 2005. Opening the black box: phylogenetics and morphological evolution of the Malagasy fossorial lizards of the subfamily “Scincinae”. Molecular Phylogenetics and Evolution 34: 118–133 (published online 2004) - get paper here
  • 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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