Trioceros jacksonii
Boulenger, 1896
tree-OH-ser-oss — JAK-soh-nee-eye
SSAR 9th Edition Comments:
Native to eastern Africa. It was introduced via the pet trade and established in California in 1981 (Kraus, 2009, Alien Reptiles and Amphibians: A Scientific Compendium and Analysis. SpringerVerlag, Heidelberg, Germany) and in Hawai'i on Oah’u, Hawai’i, Kaua’i, Lana’i and Maui as early as 1972 (McKeown, 1996, Diamond Head Publishing, Incorporated, Los Osos, California; Kraus, 2009, op. cit.).
(Krysko, Kenneth and Travis W. Taggart. 2025. Established Exotic Species. Pages 64-87 in Kirsten E. Nicholson (Editor), Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, 9th Edition. Society for the Study of Amphibians and Reptiles, Lawrence, Kansas. 87 pp.)
Errata/Changes: Page 84: The (Kraus, 2009) reference should be "Kraus, 2009, Alien Reptiles and Amphibians: A Scientific Compendium and Analysis. Springer, Dordrecht, The Netherlands". — (06/11/2025)
Range maps are based on curated specimens and provided gratis by CNAH.
(Created by Travis W. Taggart; Version: 2025.03.31.07.46.18)
Download GeoJSON polygon range file: - 0.16 MB
Taxonomic Etymology:
Named after a colonial naturalist.
Trioceros — From Greek trio- (“three”) and keras (κέρας), “horn.” Refers to the three prominent horns on the heads of males.
jacksonii — A patronym honoring Frederick John Jackson (1860–1929), a British explorer and colonial administrator in East Africa, who collected the type specimen.
First instance(s) of published English names:
No historic English names have been assigned to this taxon yet.
Catalog of American Amphibians and Reptiles
The Reptile Database
GenBank
USGS - Nonindigenous Aquatic Species Database
Selected References:
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1896
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Boulenger, George A. Description of a new chameleon from Uganda. Annals and Magazine of Natural History 6(17):376
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1996
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McKeown, Sean. A Field Guide to Reptiles and Amphibians in the Hawaiian Islands. Diamond Head Publishing, Inc., Los Osos, California. pp.
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2009
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Kraus, Fred. Alien Reptiles and Amphibians: A Scientific Compendium and Analysis. Springer, Dordrecht, The Netherlands. 563pp.
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