Hyla macrotympanum Tanner, 1957, Great Basin Nat., 17: 52. Holotype: AMNH 62141 (formerly BYU 13752), by original designation. Type locality: "10 miles east of Chiapa de Corzo, Chiapas", Mexico.
Ptychohyla macrotympanum — Duellman, 1961, Univ. Kansas Publ. Mus. Nat. Hist., 13: 351.
Ptychohyla euthysanota macrotympanum — Duellman, 1963, Univ. Kansas Publ. Mus. Nat. Hist., 15: 320.
Ptychohyla macrotympanum — Campbell and Smith, 1992, Herpetologica, 48: 165.
Pine Forest Stream Frog (Liner, 1994, Herpetol. Circ., 23: 26; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 63; Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 21).
Humid montane and pine-oak forest at elevations of 700-1700 m on the northern slopes of the Chiapan Highlands in Mexico and the Sierra de Cuchumatanes in Guatemala; also in the upper Grijalva Basin in Chiapas, Mexico, and Guatemala.
Removed from synonymy of Ptychohyla euthysanota by Campbell and Smith, 1992, Herpetologica, 48: 153-167, where it had been placed by Duellman, 1963, Univ. Kansas Publ. Mus. Nat. Hist., 15: 320. See by Duellman, 1970, Monogr. Mus. Nat. Hist. Univ. Kansas: 539-540 account (as Ptychohyla euthysanota macrotympanum) and note by Duellman, 2001, Hylid Frogs Middle Am., Ed. 2: 1020-1021. See illustration, map, description of geographic range and habitat, and conservation status in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 277.
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