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Trioceros chapini (DE WITTE, 1964)

IUCN Red List - Trioceros chapini - Least Concern, LC

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Higher TaxaChamaeleonidae, Sauria, Iguania, Squamata (lizards)
Subspecies 
Common NamesE: Gray Chameleon 
SynonymChamaeleo chapini DE WITTE 1964
Chamaeleo (Trioceros) chapini — NECAS 1999: 281
Trioceros chapini — TILBURY & TOLLEY 2009
Trioceros chapini — TILBURY 2010: 572 
DistributionGabon, C Zaire (Democratic Republic of the Congo), Equatorial Guinea

Type locality: Lukolela, Terr. of Bikoro, Equator district of the province Equator, Congo (= Zaire).  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: AMNH 45885, adult female 
DiagnosisDIAGNOSIS: Chamaeleo chapini seems to be most closely related to Chamaeleo adolfifriderici Sternfeld (1912), a small species known from few specimens, all taken in the eastern portion of the Congo (Districts of Kibali-Ituri, Nord Kivu, Sud Kivu, and Rwanda). Chamaeleo chapini (fig. 1), however, lacks the parietal and dorsal crests, as well as the conical scales on the lateral crests, that are characteristic of C. adolfifriderici. The tail of C. chapini is proportionately somewhat shorter, for it comprises slightly less than half of the over-all length, in contrast to 0.53 to 0.57 reported by Schmidt (1919) for C. adolfifriderici (de Witte 1964).


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CommentDistribution: For a map with localities in Equatorial Guinea see SÁNCHEZ-VIALAS et al. 2022.

Abundance: Rare. This is one of the species called 'lost' and 'rediscovered' by Lindken et al. 2024. 
EtymologyNamed after Dr. James Paul Chapin (1889-1964), an American ornithologist and co-leader ofthe Lang-Chapin expedition, which made the first comprehensive biological survey of the Belgian Congo (1909-1915). 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Glaw, F. 2015. Taxonomic checklist of chameleons (Squamata: Chamaeleonidae). [type catalogue] Vertebrate Zoology 65 (2): 167–246 - get paper here
  • Lindken T.; Anderson, C. V., Ariano-Sánchez, D., Barki, G., Biggs, C., Bowles, P., Chaitanya, R., Cronin, D. T., Jähnig, S. C., Jeschke, J. M., Kennerley, R. J., Lacher, T. E. Jr., Luedtke, J. A., Liu, C., Long, B., Mallon, D., Martin, G. M., Meiri, 2024. What factors influence the rediscovery of lost tetrapod species? Global Change Biology, 30: 1-18 - get paper here
  • Nečas, Petr 1999. Chameleons - Nature's Hidden Jewels. Edition Chimaira, Frankfurt; 348 pp.; ISBN 3-930612-04-6 (Europe)<br>ISBN 1-57524-137-4 (USA, Canada)
  • Pauwels, O.S.G. & Vande Weghe, J.P. 2008. Les reptiles du Gabon. Smithsonian Institution, Washington: 272 pp. - get paper here
  • SÁNCHEZ-VIALAS, A., CALVO-REVUELTA, M. & DE LA RIVA, I. 2022. Synopsis of the terrestrial Reptiles of Equatorial Guinea. Zootaxa 5202 (1): 1-197 - 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.
  • Tilbury, C. R. & Tolley, Krystal A. 2009. A re-appraisal of the systematics of the African genus Chamaeleo (Reptilia: Chamaeleonidae). Zootaxa 2079: 57–68 - get paper here
  • Witte, G. F. de 1964. A new chameleon from the Congo. American Museum Novitates 2192: 1-3. - 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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