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Rana tagoi Okada, 1928
Rana tagoi Okada, 1928, Annot. Zool. Japon., 11: 271. Holotype: TIU 2962, lost according to Maeda and Matsui, 1990, Frogs Toads Japan, Ed. 2: 59. Type locality: "mountain regions of Gifu Prefecture (Kamitakamura, Yoshikigun), at an altitude of 300 feet", Japan. Discussed and considered to be "Kamitakaramura . . . alt. 3000 feet . . . , Yoshikigun, Gifu Prefecture", Japan, by Shibata, 1988, Bull. Osaka Mus. Nat. Hist., 43: 43.
Rana (Rana) tagoi — Nakamura and Ueno, 1963, Japan. Rept. Amph. Color: 38; Yuan, Zhou, Chen, Poyarkov, Chen, Jang-Liaw, Chou, Matzke, Iizuka, Min, Kuzmin, Zhang, Cannatella, Hillis, and Che, 2016, Syst. Biol., 65: 835.
Rana tagoi tagoi — Nakatani and Okada, 1966, Acta Herpetol. Japon., 1: 64–66.
Rana (Rana) tagoi — Dubois, 1987 "1986", Alytes, 5: 41, by implication.
Rana (Laurasiarana) tagoi — Hillis and Wilcox, 2005, Mol. Phylogenet. Evol., 34: 311, by implication; see Dubois, 2006, Mol. Phylogenet. Evol., 42: 317–330, and Hillis, 2007, Mol. Phylogenet. Evol., 42: 331–338, for discussion.
Common Names
Tago Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 109).
Tago's Brown Frog (Maeda and Matsui, 1990, Frogs Toads Japan, Ed. 2: 59; Goris and Maeda, 2004, Guide Amph. Rept. Japan: 100).
Distribution
Mountain regions of Honshu, Shikoku, and Kyushu Is., Japan.
Geographic Occurrence
Natural Resident: Japan
Endemic: Japan
Comment
In the Section Rana, subgenus Rana, Rana japonica group of Dubois, 1992, Bull. Mens. Soc. Linn. Lyon, 61: 333. See Nakamura and Ueno, 1963, Japan. Rept. Amph. Color: 38–40. See comment under Rana sakuraii. Tanaka, Matsui, and Takenaka, 1994, Zool. Sci., Tokyo, 11: 753–757, discussed the relationships of this species with Rana ornativentris, Rana pirica, Rana tagoi, and Rana japonica. See Tanaka-Ueno, Matsui, Sato, Takenaka, and Takenaka, 1998, Japan. J. Herpetol., 17: 91–97, for phylogenetic relationships and discussion. Nishioka, Ohta, and Sumida, 1987, Sci. Rep. Lab. Amph. Biol. Hiroshima Univ., 9: 1–52, reported on intraspecific variation of allozymes and large difference between Rana tagoi yakushimensis and Rana tagoi tagoi. Tanaka, Matsui, and Takenaka, 1996, Biochem. Syst. Ecol., 24: 299–307, suggested that Rana tagoi okiensis was more distantly related to other populations assigned to Rana tagoi than was Rana sakuraii. Highton, 2000, in Bruce et al., Biol. Plethodontid Salamanders: 235, suggested that their data supported the recognition of three species. Maeda and Matsui, 1990, Frogs Toads Japan, Ed. 2: 56–67, provided accounts. Goris and Maeda, 2004, Guide Amph. Rept. Japan: 100–105, provided account, maps, and photographs. Ryuzaki, Nishioka, and Kawamura, 2006, Cytogenet. Genome Res., 114: 56–65, reported mutually incompatible karyotypes in this species, a population of n=28 in the Chausu mountain population of Nagano Prefecture, and n=26 elsewhere in Japan, suggesting that the Chausu mountain population should be recognized as a distinct species (DRF). Eto, Matsui, Sugahara, and Tanaka-Ueno, 2012, Zool. Sci., Tokyo, 29: 662–671, suggested on the basis of mtDNA analysis that this taxon is composed of multiple cryptic species. Eto and Matsui, 2014, Mol. Phylogenet. Evol., 79: 231–239, reported on molecular phylogenetics and noted substantial mtDNA introgression with populations of its sister species, Rana sakuraii, which had confounded previous attempts at recovering phylogeny based only on mtDNA trees. They also noted that Rana tagoi is composed of multiple lineages forming a paraphyletic series with respect to Rana sakuraii, for which some available names should be evaluated. Shimada, Sanda, and Eto, 2021, Curr. Herpetol., Kyoto, 40: 54–65, reported on the advertisement call at the type locality. Eto and Matsui, 2023, Curr. Herpetol., Kyoto, 42: 190–209, removed Rana okiensis and Rana yakushimensis from the synonymy of Rana tagoi on the basis of mtDNA and comparative morphology. Tokita, Iizuka, and Eto, 2023, Herpetol. Notes, 16: 761–771, compared Rana sakuraii and Rana tagoi morphmetrically.
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