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Trachylepis bayonii (BOCAGE, 1872)

IUCN Red List - Trachylepis bayonii - Data Deficient, DD
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Higher TaxaScincidae, Mabuyinae (Mabuyini), Scincoidea, Sauria, Squamata (lizards)
SubspeciesTrachylepis bayonii bayonii (BOCAGE 1872)
Trachylepis bayonii keniensis LOVERIDGE 1956 
Common NamesE: Bayão’s Skink, Bayon's Mabuya, Bayon’s skink
huilensis: Huila Skink 
SynonymEuprepes Bayonii BOCAGE 1870: 68 (nomen nudum)
Euprepes Bayonii BOCAGE 1872: 75
Mabuia Bayonii — BOULENGER 1887: 201
Mabuya bayoni — GREER et al. 2000
Mabuya bayoni — SPAWLS et al. 2001
Euprepis bayonii — MAUSFELD et al. 2002
Trachylepis bayonii — BAUER 2003
Trachylepis bayonii — SPAWLS et al. 2018: 134
Trachylepis bayoni bayoni — BRANCH et al. 2019
Trachylepis bayonii — CERIACO et al. 2024: 39

Trachylepis bayonii keniensis (LOVERIDGE 1956)
Mabuya bayonii keniensis LOVERIDGE 1956: 2
Mabuya bayonii keniensis — BROADLEY & HOWELL 1991: 15
Mabuya keniensis — CERIACO et al. 2024: 39 
DistributionAngola, Kenya, Tanzania, Uganda, Republic of South Sudan (RSS)

Type locality: “Duque de Bragança, dans l’intérieur d’Angola” [= Calandula, Malanje Province], Angola.

keniensis: Kenya, Tanzania. Type locality: Northern Uaso Nyiro, Sotik, Kenya.  
Reproductionovovivparous 
TypesSyntypes: BMNH 1946.8.19.13, ZMB 6477 (see Bauer et al., 2003). Other syntypes in MBL presumably lost in the fire that destroyed that collection in 1978.
Holotype: MD 1886 (Museu Dundo, Angola) [huilensis]
Holotype: MCZ R-29662 [keniensis] 
DiagnosisDiagnosis: Ceriaco et al. 2024 
CommentSynonymy: Trachylepis bayonii huilensis (LAURENT 1964) was described from a single juvenile specimen and apparently never investigated later. Marques et al. 2018 preliminarily list it as synonym of T. bayonii but state that it may warrant recognition.

The year of description is sometimes given as “1867”.

Distribution: see map in Ceriaco et al. 2024: 43 (Fig. 23). 
EtymologyNamed after Francisco Antonio Pinheiro Bayão, a Portuguese planter and administrator whose family had settled in Angola in the 17th century where he also collected many specimens. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bocage, J. V. B. 1872. Diagnoses de quelques espéces nouvelles de Reptiles d'Afrique occidentale. Jorn. Sci. Math. Phys. Nat. Lisboa 4: 72-82. - get paper here
  • Boulenger, G. A. 1887. Catalogue of the lizards in the British Museum (Nat. Hist.) III. Lacertidae, Gerrhosauridae, Scincidae, Anelytropsidae, Dibamidae, Chamaeleontidae. London: 575 pp. - get paper here
  • Branch, William R.; Pedro Vaz Pinto, Ninda Baptista, and Werner Conradie 2019. The Reptiles of Angola: History, Diversity, Endemism and Hotspots. Chapter 13 in: B. J. Huntley et al. (eds.), Biodiversity of Angola. Springer Verlag, pp. 283-334 - get paper here
  • Broadley, D. G. & HOWELL, K. M. 1991. A check list of the reptiles of Tanzania, with synoptic keys. Syntarsus 1: 1—70
  • Butler, B O; Ceríaco, L M P; Marques, M P; Bandeira, S; Júlio, T; Heinicke, M P & Bauer, A M; 2019. Herpetological survey of Huíla Province, Southwest Angola, including first records of Bicuar National Park. Herpetological Review 50 (2): 225-240 - get paper here
  • Ceríaco, Luis M. P.; Mariana P. Marques, Ilunga André, Esteves Afonso, David C. Blackburn & Aaron M. Bauer 2020. ILLUSTRATED TYPE CATALOGUE OF THE “LOST” HERPETOLOGICAL COLLECTIONS OF MUSEU DO DUNDO, ANGOLA. Bulletin of the Museum of Comparative Zoology 162 (7): 379-440 - get paper here
  • Ceríaco, Luis M.P.; Mariana P. Marques, Diogo Parrinha, Arthur Tiutenko, Jeffrey L. Weinell, Brett O. Butler & Aaron M. Bauer 2024. The Trachylepis (Squamata: Scincidae) of Angola: An Integrative Taxonomic Review with the Description of Seven New Species Bulletin of the American Museum of Natural History Feb 2024 Vol. 2024, No. 465: 1-153 - get paper here
  • Conradie W, Keates C, Verburgt L, Baptista NL, Harvey J, Júlio T, Neef G. 2022. Contributions to the herpetofauna of the Angolan Okavango-Cuando-Zambezi River drainages. Part 2: Lizards (Sauria), chelonians, and crocodiles. Amphibian & Reptile Conservation 16(2): 181–214 (e322) - get paper here
  • Greer, A.E., Arnold, C. & Arnold, E.N. 2000. The systematic significance of the number of presacral vertebrae in the scincid lizard genus Mabuya. Amphibia-Reptilia 21 (1): 121-126 - get paper here
  • Kingdon, R. & Spawls, S. 2010. A new gregarious species of Trachylepis (Reptilia: Sauria: Scincidae) from Lolui Island, Lake Victoria, Uganda, with a key to Ugandan Trachylepis. African Journal of Herpetology 59 (2): 123-132 - get paper here
  • Laurent, R.F. 1964. Reptiles et batraciens de l'Angola (troisième contribution). Companhia de Di amantes de Angola (Diamang), Serviços Culturais, Museu do Dundo (Angola), No. 67, 165 pp.
  • Loveridge, A. 1956. A new subgenus of Chamaeleo from Rhodesia and new race of Mabuya from Keya Colony. Breviora (59): 1-4 - get paper here
  • Marques, Mariana P.; Luis M. P. Ceríaco , David C. Blackburn , and Aaron M. Bauer 2018. Diversity and Distribution of the Amphibians and Terrestrial Reptiles of Angola -- Atlas of Historical and Bibliographic Records (1840–2017). Proc. Cal. Acad. Sci. (Ser. 4) 65: 1-501 (Supplement II)
  • SANTOS, B. S. .,MARQUES, M. P. ., BAUER, A. M. ., & CERÍACO, L. M. P. . 2021. Herpetological results of Francisco Newton’s Zoological Expedition to Angola (1903–1906): a taxonomic revision and new records of a forgotten collection. Zootaxa 5028 (1): 1–80 - get paper here
  • Sindaco, R., Metallinou, M., Pupin, F., Fasola, M. & Carranza, S. 2012. Forgotten in the ocean: systematics, biogeography and evolution of the Trachylepis skinks of the Socotra Archipelago. Zoologica Scripta - get paper here
  • Spawls, S. & Rotich, D. 1997. An annotated checklist of the lizards of Kenya. J. East African Nat. Hist. 86: 61-83
  • Spawls, S.; Howell, K.; Drewes, R.C. & Ashe, J. 2002. A field guide to the reptiles of East Africa. Academic Press, 543 pp. [reviews in HR 34: 396 and Afr. J. Herp. 51; 147] - get paper here
  • Spawls, Steve; Kim Howell, Harald Hinkel, Michele Menegon 2018. Field Guide to East African Reptiles. Bloomsbury, 624 pp. - get paper here
  • Weinell, J. L., Branch, W. R., Colston, T. J., Jackman, T. R., Kuhn, A., Conradie, W., & Bauer, A. M. 2019. A species-level phylogeny of Trachylepis (Scincidae: Mabuyinae) provides insight into their reproductive mode evolution. Molecular Phylogenetics and Evolution - get paper here
 
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