Systematics

Trogon roseigaster Vieillot, 1817, Nouveau dictionnaire d'histoire naturelle, Nouvelle édition 8 p. 314.—Type Locality: "Santo Domingo and Mexico".

The Hispaniolan Trogon has occasionally been placed in the monotypic genus Temnotrogon (16 Peters, J. L. (1945) Check-list of birds of the world. Volume 5. Museum of Comparative Zoology, Harvard University Press, Cambridge, MA, USA. Close , 17 del Hoyo, J., and N. J. Collar (2014). HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1. Non-passerines. Lynx Edicions, Barcelona, Spain. Close ), but is now generally placed in Priotelus with its sister species, the Cuban Trogon (Priotelus temnurus) (18 Dickinson, E. C., and J. V. Remsen, Editors (2013). The Howard and Moore Complete Checklist of the Birds of the World. Fourth edition. Volume 1. Aves Press, Eastbourne, UK. Close , 19 Clements, J. F., P. C. Rasmussen, T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood (2023). The eBird/Clements checklist of Birds of the World: v2023. Cornell Laboratory of Ornithology, Ithaca, NY, USA. Close , 20 Gill, F., D. Donsker, and P. Rasmussen (Eds) (2024). IOC World Bird List (v14.1). Close ).

None described.

The phylogenetic relationships of trogons including the genus Priotelus have been investigated by Espinosa de los Monteros (21 Espinosa de los Monteros, A. (1998) Phylogenetic relationships among the trogons. Auk 115: 937-954. Close ) using sequence data from mitochondrial genes, by Moyle (22 Moyle, R. G. (2005) Phylogeny and biogeographical history of Trogoniformes, a pantropical bird order. Biological Journal of the Linnean Society 84: 725–738. Close ), Johansson and Ericson (23 Johansson, U. S., and P. G. P. Ericson (2005). A re-evaluation of basal phylogenetic relationships within trogons (Aves: Trogonidae) based on nuclear DNA sequences. Journal of Zoological Systematics and Evolutionary Research 43:166–173. Close ), Ornelas et al. (24 Ornelas, J.F., González, C. and Espinosa de los Monteros, A. (2009). Uncorrelated evolution between vocal and plumage coloration traits in the trogons: a comparative study. Journal of Evolutionary Biology. 22(3): 471-484. Close ), and Hosner et al. (25 Hosner, P.A., Sheldon, F.H., Lim Haw Chuan and Moyle, R.G. (2010). Phylogeny and biogeography of the Asian trogons (Aves: Trogoniformes) inferred from nuclear and mitochondrial DNA sequences. Mol. Phyl. & Evol.. 57(3): 1219–1225. Close ) using a combination of nuclear and mitochondrial genes, and by Oliveros et al. (26 Oliveros, C. H., M. J. Andersen, P. A. Hosner, W. M. Mauck, III, F. H. Sheldon, J. Cracraft, and R. G. Moyle (2020). Rapid Laurasian diversification of a pantropical bird family during the Oligocene–Miocene transition. Ibis 162:137–152. Close ) using sequence data from thousands of ultraconserved elements. Those studies that included both Hispaniolan Trogon and the Cuban Trogon (Priotelus temnurus) have confirmed the sister relationship of those two species (22 Moyle, R. G. (2005) Phylogeny and biogeographical history of Trogoniformes, a pantropical bird order. Biological Journal of the Linnean Society 84: 725–738. Close , 24 Ornelas, J.F., González, C. and Espinosa de los Monteros, A. (2009). Uncorrelated evolution between vocal and plumage coloration traits in the trogons: a comparative study. Journal of Evolutionary Biology. 22(3): 471-484. Close , 25 Hosner, P.A., Sheldon, F.H., Lim Haw Chuan and Moyle, R.G. (2010). Phylogeny and biogeography of the Asian trogons (Aves: Trogoniformes) inferred from nuclear and mitochondrial DNA sequences. Mol. Phyl. & Evol.. 57(3): 1219–1225. Close , 26 Oliveros, C. H., M. J. Andersen, P. A. Hosner, W. M. Mauck, III, F. H. Sheldon, J. Cracraft, and R. G. Moyle (2020). Rapid Laurasian diversification of a pantropical bird family during the Oligocene–Miocene transition. Ibis 162:137–152. Close ).

The relationships of the genus Priotelus within the trogons differs among studies. Espinosa de los Monteros (21 Espinosa de los Monteros, A. (1998) Phylogenetic relationships among the trogons. Auk 115: 937-954. Close ) identified Priotelus as sister genus to the remaining New World trogons (including the genera Trogon, Euptilotis, and Pharomachrus), which are together sister to the Asian trogons (Harpactes). In contrast, Moyle (22 Moyle, R. G. (2005) Phylogeny and biogeographical history of Trogoniformes, a pantropical bird order. Biological Journal of the Linnean Society 84: 725–738. Close ) found that Priotelus is near the base of the entire trogon radiation, and is sister to a clade that includes both New World (Trogon) and Old World (Harpactes, Apaloderma) genera, and Hosner et al. (25 Hosner, P.A., Sheldon, F.H., Lim Haw Chuan and Moyle, R.G. (2010). Phylogeny and biogeography of the Asian trogons (Aves: Trogoniformes) inferred from nuclear and mitochondrial DNA sequences. Mol. Phyl. & Evol.. 57(3): 1219–1225. Close ) found that Priotelus is sister to all other trogons. Still other studies found that Priotelus is most closely related to the Neotropical genus Trogon (23 Johansson, U. S., and P. G. P. Ericson (2005). A re-evaluation of basal phylogenetic relationships within trogons (Aves: Trogonidae) based on nuclear DNA sequences. Journal of Zoological Systematics and Evolutionary Research 43:166–173. Close , 24 Ornelas, J.F., González, C. and Espinosa de los Monteros, A. (2009). Uncorrelated evolution between vocal and plumage coloration traits in the trogons: a comparative study. Journal of Evolutionary Biology. 22(3): 471-484. Close , 26 Oliveros, C. H., M. J. Andersen, P. A. Hosner, W. M. Mauck, III, F. H. Sheldon, J. Cracraft, and R. G. Moyle (2020). Rapid Laurasian diversification of a pantropical bird family during the Oligocene–Miocene transition. Ibis 162:137–152. Close ). Rapid early divergence of the major clades of trogon has likely lead to low phylogenetic signal when using relatively few genes, but in using extensive genome-wide data, strong support is achieved for placing Priotelus as the sister genus to the genus Trogon (26 Oliveros, C. H., M. J. Andersen, P. A. Hosner, W. M. Mauck, III, F. H. Sheldon, J. Cracraft, and R. G. Moyle (2020). Rapid Laurasian diversification of a pantropical bird family during the Oligocene–Miocene transition. Ibis 162:137–152. Close ).

None known, and unlikely due to lack of close relatives in its range.

A single trogon fossil from the Pleistocene, presumably this species, is known from the Dominican Republic (27 Brodkorb, P. (1971). Catalogue of fossil birds, Part 4 (Columbiformes through Piciformes). Bulletin of the Florida State Museum, Biological Sciences 15(4):163–266. Close ).