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Trioceros johnstoni (BOULENGER, 1901)

IUCN Red List - Trioceros johnstoni - Least Concern, LC
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Higher TaxaChamaeleonidae, Sauria, Iguania, Squamata (lizards)
Subspecies 
Common NamesE: Johnston's Chameleon 
SynonymChamaeleon johnstoni BOULENGER 1901: 136
Chamaeleon graueri STEINDACHNER 1911: 177
Chamaeleon johnstoni — LOVERIDGE 1936: 79
Chamaeleo johnstoni crenulatus LAURENT 1951: 360
Chamaeleo laevigularis MÜLLER 1926
Chamaeleo (Trioceros) johnstoni — NECAS 1999: 171
Trioceros johnstoni — TILBURY & TOLLEY 2009
Trioceros johnstoni — TILBURY 2010: 656
Trioceros johnstoni — LUTZMANN et al. 2014
Chamaeleo johnstoni — PYRON & BURBRINK 2013
Trioceros johnstoni — SPAWLS et al. 2018: 293 
DistributionBurundi, Rwanda, Uganda, N/E Zaire (Democratic Republic of the Congo)

Type locality: Ruwenzori (6000 ft. elevation), Uganda

Type locality: “Urwald hinter den Sandbergen des
nord-westlichen Ufers des Tanganikasees in einer Höhe von
1800 bis 2090 m; [...] Urwälder nächst Bukoba” [graueri]  
Reproductionoviparous 
TypesSyntypes: BMNH 1946.8.21.36-40 (three males, one female and one juvenile, coll. H. Johnston).
Syntypes: NMW [graueri] 
Diagnosis 
Comment 
EtymologyNamed after Sir Harry Hamilton Johnston (1858-1927), a formidable explorer, colonial administrator, painter, photographer, cartographer, naturalist, writer, and Queen Victoria's first Commissioner and Consul-General to British Central Africa. He discovered ~100 new species (Beolens et al. 2011). 
References
  • Arndt, I. 2002. Portfolio: Chamäleons. Naturfoto 33 (10): 36-45
  • Behangana, M., Byaruhanga, A., Magala, R. et al. 2023. An Analysis of the Herpetofauna Communities in the Last Moderately Altered, High-Altitude Wetlands of Uganda. Wetlands 43, 88 - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Boulenger, G. A. 1901. Description of two new Chamaeleon from Mount Ruwenzori, British East Africa. Proc. zool. Soc., London 1901 (2): 135-136. - get paper here
  • CAMPBELL, PATRICK D; WOLFGANG DENZER 2020. Annotated catalogue of chameleon types in the collection of the Natural History Museum, UK (NHMUK) (Reptilia: Squamata: Chamaeleonidae). Zootaxa 4742 (3): 481–500 - get paper here
  • Dehling, J. M. 2011. Trioceros johnstoni. Reptilia (Münster) 16 (91): 47-50 - get paper here
  • Gemel, R.; G. Gassner & S. Schweiger 2019. Katalog der Typen der Herpetologischen Sammlung des Naturhistorischen Museums Wien – 2018. Ann. Naturhist. Mus. Wien, B 121: 33–248
  • Glaw, F. 2015. Taxonomic checklist of chameleons (Squamata: Chamaeleonidae). [type catalogue] Vertebrate Zoology 65 (2): 167–246 - get paper here
  • Hellmich, Walter 1956. Die von Dr. Christa Lindemann und Nin Pavlitzki in Tanganjika gesammelten Chamaeleons. Veröffentlichungen der Zoologischen Staatssammlung München 4: 117-124 - get paper here
  • Laurent, R. F. 1951. Deux Reptiles et onze Batraciens nouveaux d'Afrique Centrale. Rev. Zool. Bot. Afr. 44: 360-381.
  • Loveridge, A. 1936. African reptiles and amphibians in the Field Museum of Natural History. Zool. Ser. Field Mus. Nat. Hist., Chicago, 22 (1): 1-122 - get paper here
  • Lutzmann, Nicolá; Benoit Nzigidahera, Max Dehling, Eberhard Fischer, Onesphore Masabo, David Hellendrung, Uli Wagner, Walter Herwig, Armin Hummel, Ralph Lademann, Dominik & Natascha Rochna 2014. Chamäleons in Burundi und erste Daten zur Biologie aus der Terrarienhaltung. Draco 15 (58): 38-53 - get paper here
  • Necas, 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)
  • Pyron, R. Alexander; Frank T. Burbrink 2013. Early origin of viviparity and multiple reversions to oviparity in squamate reptiles. Ecology Letters 17 (1): 13–21 (published online 2013, in print 2014), DOI: 10.1111/ele.12168 - get paper here
  • Rogner, Manfred 2014. Chamäleons im Terrarium. Draco 15 (58): 6-22 - get paper here
  • Rovatsos, Michail; Marie Altmanová , Martina Johnson Pokorná , Petr Velenský , Antonio Sánchez Baca Orcid and Lukáš Kratochvíl 2017. Evolution of Karyotypes in Chameleons. Genes 8(12): 382; doi:10.3390/genes8120382 - get paper here
  • Schmidt, W.; Tamm, K. & Wallikewitz, E. 2010. Chamäleons - Drachen unserer Zeit. Natur und Tier Verlag, 328 pp. [review in Reptilia 101: 64, 2013] - get paper here
  • Schott,W. 2000. Haltung und Vermehrung des Uganda-Dreihornchamäleons Chamaeleo (Trioceros) johnstoni BOULENGER 1901. Elaphe 8 (3): 2-10
  • 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
  • Steindachner, F. 1911. Vorläufiger Bericht über drei neue Arten aus der Familie Chamaeleontidae. Anz. Akad. Wiss. Wien 10: 177-179.
  • Sternfeld, R. 1912. Die Reptilien aus der Expedition Professor Hans Meyers nach Deutsch-Ostafrika. Sber. Ges. naturf. Freunde, Berlin 7: 384-388.
  • Sternfeld, R. 1912. Der Formenkreis des Chamaeleon bitaeniatus. Sber. Ges. naturf. Freunde, Berlin 7: 379-384.
  • 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
  • van Hoof, J. et al. 2006. Kameleons, een fascinerende hobby. Lacerta 64 (5-6): 1-96 - get paper here
  • WITTGEN, J. 2003. Eigene Erfahrungen zur Haltung und Zucht des Uganda-Dreihornchamäleons Chamaeleo (Trioceros) johnstoni BOULENGER, 1901 Burundi-Variante. CHAMAELEO 13(2): 21-26. - get paper here
 
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