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Chamaeleo necasi ULLENBRUCH, KRAUSE & BÖHME, 2007

IUCN Red List - Chamaeleo necasi - Data Deficient, DD
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Higher TaxaChamaeleonidae, Sauria, Iguania, Squamata (lizards)
Subspecies 
Common Names 
SynonymChamaeleo necasi ULLENBRUCH, KRAUSE & BÖHME 2007
Chamaeleo necasi — TILBURY & TOLLEY 2009
Chamaeleo necasi — TILBURY 2010: 530 
DistributionTogo, Benin

Type locality: Togo, West Africa (no specific locality data).  
Reproductionoviparous (phylogenetic imputation, fide Zimin et al. 2022) 
TypesHolotype: ZFMK 76922, adult male, native collector, without known collecting date. Paratypes: ZFMK, MRAC, ZMB 
DiagnosisDiagnosis: A stoutly built, flap-necked chameleon belonging to the C. dilepis group within the subgenus Chamaeleo which is distinguished from C. dilepis by (1) the much smaller occipital flaps, (2) a weakly raised parietal crest forming a distinct (though flat) helmet, (3) the highly elevated dorsal crest which is supported by elongated neural spines of the dorsal vertebrae, (4) a weakly expressed, merely indicated temporal ridge, (5) the possession of four (instead of three) fully differentiated sulcal rotulae on the hemipenis, and (6) much smaller calyces on the trunk of this organ. In contrast, C. gracilis has only rudimentary skin folds in the occiput, a much flatter head and a much lower dorsal ridge. C. quilensis is comparable in lobe size, but has a less raised parietal crest, a much lower dorsal ridge, a different shape of hemipenis, and marked sexual dimorphism in size, the females growing considerably larger than males. This is true — and even more pronounced — for C. roperi, whose occipital flaps are separated by a gap in the nape, (they are in contact in C. dilepis and in necasi n. sp.). Moreover, C. roperi has only two differentiated hemipenial sulcal rotulae, versus three in C. dilepis and four in necasi n. sp. 
Comment 
Etymologynamed after Petr Necas, Czech herpetologist. 
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
  • Leptien, Rolf 2014. Auf der Suche nach dem Togo-Chamäleon. Draco 15 (58): 54-59 - get paper here
  • Segniagbeto, Gabriel Hoinsoude; Jean-François Trape, Komlan M. Afiademanyo, Mark-Oliver Rödel, Annemarie Ohler, Alain Dubois, Patrick David, Danny Meirte, Isabelle Adolé Glitho, Fabio Petrozzi, and Luca Luiselli 2015. Checklist of the lizards of Togo (West Africa), with comments on systematics, distribution, ecology, and conservation. Zoosystema 37 (2): 381-402 - 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
  • Trape, J.F.; Trape, S. & Chirio, L. 2012. Lézards, crocodiles et tortues d'Afrique occidentale et du Sahara. IRD Orstom, 503 pp. - get paper here
  • Ullenbruch, K.; Grell, O.; Böhme, W. 2010. Reptiles from southern Benin, West Africa, with the description of a new Hemidactylus (Gekkonidae), and a country-wide checklist. Bonn Zool. Bull. 57 (1): 31-54 - get paper here
  • Ullenbruch, K.; Krause, P.; Bohme, W. 2007. A new species of the Chamaeleo dilepis group (Sauria Chamaeleonidae) from West Africa. Tropical Zoology 20 (1): 1-17 - 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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