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Rhampholeon beraduccii MARIAUX & TILBURY, 2006

IUCN Red List - Rhampholeon beraduccii - Vulnerable, VU

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Higher TaxaChamaeleonidae, Sauria, Iguania, Squamata (lizards) 
Subspecies 
Common NamesBeraducci’s pygmy chameleon 
SynonymRhampholeon (Rhinodigitum) beraduccii MARIAUX & TILBURY 2006
Rhampholeon (Rhinodigitum) beraduccii — TILBURY 2010: 167
Rhampholeon (Rhinodigitum) beraduccii — GLAW 2015
Rhampholeon beraduccii — SPAWLS et al. 2018: 250 
DistributionTanzania (Mahenge Mountains)

Type locality: Tanzania, Morogoro region, Mahenge Mountains, Sali FR [8°57'57.4'' S, 36°41'17.9'' E], elevation about 1000 m.  
Reproductionoviparous 
TypesHolotype: MHNG 2655.019 (field tag TZ 343), female, 9 October 2001. Collected by J. Mariaux & S. Loader. 
DiagnosisDiagnosis. Chamaeleonidae, Rhampholeon (Rhinodigitum). With the characters of the subgenus. A tiny brown chameleon with snout–vent length (SVL) 20.5–28 mm, maximum total length (TL) 36 mm, and a very short tail, 19–22% of TL. The smallest known Rhampholeon. Head with a well-developed nasal process and short supra-optical peaks. Head flat with very slightly marked crests, temporal crest very weak. Dorsal keel weakly undulated. Body with sub-homogeneous granules, but conspicuous shoulder spine present. Deep axillary and inguinal pits present. Claws bicuspid with small accessory spines.

Differential diagnosis. Rh. beraduccii can be differentiated from other members of the genus by its smaller size, small optical peaks and the shape of its rostral appendage. Furthermore, members of the similar uluguruensis group, including Rh. moyeri, do not show inguinal pits, which are clearly marked in Rh. beraduccii. 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
EtymologyThe new species is named in honour of Joe Beraducci, Arusha, Tanzania, as an appreciation for his generous assistance and help provided to the authors and to numerous other scientists working in the Eastern Arc Range of Tanzania. 
References
  • Beolens, ; Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • FISSEHA, MAKDA; JEAN MARIAUX, MICHELE MENEGON 2013. The “Rhampholeon uluguruensis complex” (Squamata: Chamaeleonidae) and the taxonomic status of the pygmy chameleons in Tanzania. Zootaxa 3746 (3): 439–453
  • Glaw, F. 2015. Taxonomic checklist of chameleons (Squamata: Chamaeleonidae). [type catalogue] Vertebrate Zoology 65 (2): 167–246 - get paper here
  • Mariaux, Jean and Colin R. Tilbury. 2006. The pygmy chameleons of the eastern Arc range (Tanzania): Evolutionary relationships and the description of three new species of Rhampholeon (Sauria: Chamaeleonidae). The Herpetological Journal 16 (3): 315-331
  • 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
  • Rovero, F., Menegon, M., Fjeldså, J., Collett, L., Doggart, N., Leonard, C., Norton, G., Owen, N., Perkin, A., Spitale, D., Ahrends, A., Burgess, N. D. 2014. Targeted vertebrate surveys enhance the faunal importance and improve explanatory models within the Eastern Arc Mountains of Kenya and Tanzania. Diversity and Distributions. doi: 10.1111/ddi.12246 - get paper here
  • Spawls, Steve; Kim Howell, Harald Hinkel, Michele Menegon 2018. Field Guide to East African Reptiles. Bloomsbury, 624 pp. - get paper here
  • Tilbury, C. 2010. Chameleons of Africa: An Atlas, Including the Chameleons of Europe, the Middle East and Asia. Edition Chimaira, Frankfurt M., 831 pp.
 
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