Hyla ptychodactyla Duellman and Hillis, 1990, Occas. Pap. Mus. Nat. Hist. Univ. Kansas, 134: 12. Holotype: KU 209780, by original designation. Type locality: "Pilaló (00°57′S, 79°02′W), 2320 m, Provincia de Cotopaxi, Ecuador".
Hyloscirtus ptychodactylus — Faivovich, Haddad, Garcia, Frost, Campbell, and Wheeler, 2005, Bull. Am. Mus. Nat. Hist., 294: 85.
Boana ptychodactyla — Wiens, Fetzner, Parkinson, and Reeder, 2005, Syst. Biol., 54: 743. by implication.
Pilalo Treefrog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 57).
Known only from the vicinity of the type locality at Pilaló , Cotopaxi, Ecuador, 2320 m elevation.
In the Hyla larinopygion group according to the original publication. In the Hyloscirtus larinopygion group of Faivovich, Haddad, Garcia, Frost, Campbell, and Wheeler, 2005, Bull. Am. Mus. Nat. Hist., 294: 85. See map, description of geographic range and habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 251.
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