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Lygodactylus arnoulti PASTEUR, 1965

IUCN Red List - Lygodactylus arnoulti - Least Concern, LC

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Pasteur's Dwarf Gecko, Arnoult’s Dwarf Gecko
G: Arnoults Zwerggecko 
SynonymLygodactylus arnoulti PASTEUR 1965
Lygodactylus arnoulti — KLUGE 1993
Lygodactylus arnoulti — GLAW & VENCES 1994: 282
Lygodactylus (Lygodactylus) arnoulti — RÖSLER 2000: 92
Lygodactylus arnoulti— PUENTE et al. 2009: 47
Lygodactylus arnoulti — RÖLL et al. 2010
Lygodactylus arnoulti — GIPPNER et al. 2021 

Type locality: Montagne de l’Ibity, 1700 m elevation, C Madagascar  
TypesHolotype: MNHN-RA 1966.1001 
DiagnosisDiagnosis. Lygodactylus arnoulti, a species endemic to the central massifs of Ibity and Itremo, is characterized as a member of the L. verticillatus group as defined above by its clearly whorled tail. It differs from other species of the group as follows: from L. decaryi, L. heterurus, L. klemmmeri, and L. verticillatus by the characteristic dorsal pattern with grey ground colour and ocellae or short dark transversal markings (vs. absence a clear dorsal pattern, sometimes with a tendency of longitudinal striation in L. verticillatus, light dorsolateral bands in L. klemmeri, or pairs of large light markings in L. heterurus); from L. heterurus and L. klemmeri by the absence of longitudinal dark lines on the throat (vs. presence); from L. verticillatus by the absence of contact between the posterior projection of the mental scale and the first infralabials (vs. usually presence); from L. decaryi and L. verticillatus by a larger body size (mean SVL 30.2 mm vs. 25.1 and 23.1 mm); from L. decaryi by a lower number of preanal pores in males (9–11 vs. 15). Distinction is most difficult from L. blancae; however, the dorsal pattern of that species is also less distinctly ocellated or marked with transversal markings than in L. arnoulti, and L. arnoulti usually has few or no dark spots on the throat whereas L. blancae has usually many such spots, sometimes forming indistinct longitudinal lines. (PUENTE et al. 2009) 
CommentPriority: PASTEUR’s paper was published only in 1965 although the journal was labeled “1964”.

Habitat. According to Pasteur (1964) this species lives in semi-arid savannah areas at an altitude of about 1700 m.

Karyotype: see Mezzasalma et al. 2016. 
Etymologydedicated to Jacques Arnoult. 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Gippner, Sven, Scott L Travers, Mark D Scherz, Timothy J Colston, Mariana L Lyra, Ashwini V Mohan, Malte Multzsch, et al. 2021. A Comprehensive Phylogeny of Dwarf Geckos of the Genus Lygodactylus, with Insights into Their Systematics and Morphological Variation. Molecular Phylogenetics and Evolution, 107311 - get paper here
  • Glaw ,F. & Vences, M. 1994. A Fieldguide to the Amphibians and Reptiles of Madagascar. Vences & Glaw Verlag, Köln (ISBN 3-929449-01-3)
  • Krüger, Jens 1999. Neue Erkenntnisse zur Faunistik einiger Reptilien Madagaskars. Salamandra 35 (2): 65-76 - get paper here
  • Krüger, Jens 2001. Die madagassischen Gekkoniden. Teil II: Die Geckos der Gattung Lygodactylus GRAY 1864 (Reptilia: Sauria: Gekkonidae). Gekkota 3: 3-28
  • Mezzasalma M., Andreone F., Aprea G., Glaw F., Odierna G., Guarino F. M. 2016. Molecular phylogeny, biogeography and chromosome evolution of Malagasy dwarf geckos of the genus Lygodactylus (Squamata, Gekkonidae). Zoologica Scripta 46: 42–54, DOI: 10.1111/zsc.12188 - get paper here
  • Pasteur, G. 1965. Notes préliminaires sur les lygodactyles (gekkonidés). IV. Diagnoses de quelques formes africaines et malgaches. Bulletin du Museum National d’Histoire Naturelle, Paris, 36: 311-314 [1964]
  • PUENTE, MARTA; FRANK GLAW, DAVID R. VIEITES & MIGUEL VENCES 2009. Review of the systematics, morphology and distribution of Malagasy dwarf geckos, genera Lygodactylus and Microscalabotes (Squamata: Gekkonidae). Zootaxa 2103: 1-76 - get paper here
  • Röll, B. 2004. Lygodactylus arnoulti PASTEUR. Sauria Supplement 26 (3): 613-616 - get paper here
  • Röll, B. 2004. Tagaktive Zwerggeckos aus Afrika und Madagaskar: die Gattung Lygodactylus. Draco 5 (18): 18-27 - get paper here
  • Röll, Beate 2002. Delightful Dwarfs: Diurnal Geckos of the Genus Lygodactylus. Gekko 3 (2): 21-33
  • Röll, Beate; Heike Pröhl, Klaus-Peter Hoffmann 2010. Multigene phylogenetic analysis of Lygodactylus dwarf geckos (Squamata: Gekkonidae). Molecular Phylogenetics and Evolution 56 (1): 327-335 - get paper here
  • Rösler, H. 2000. Studien an den Begattungsorganen der Geckos (Reptilia: Gekkota) - 2. Die Hemipenismorphologie von Lygodactylus GRAY 1864 (Gekkonidae: Gekkoninae). Gekkota 2: 208-219
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
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