Lithodytes megacephalus Cope, 1875 "1876", J. Acad. Nat. Sci. Philadelphia, Ser. 2, 8: 110. Holotype: USNM 32579 according to Cochran, 1961, Bull. U.S. Natl. Mus., 220: 66. Type locality: "Pico Blanco, 6000 feet elevation", Costa Rica. Corrected to "Cerro Utyum, 6000 ft, Cantón de Talamanca, Provincia de Limón; 2134 m", Costa Rica, by Savage, 1974, Rev. Biol. Tropical, 22: 110.
Hylodes megacephalus — Brocchi, 1882, Miss. Scient. Mex. Amer. Centr., Rech. Zool., 3(2, livr. 2): 57.
Eleutherodactylus megacephalus — Stejneger, 1904, Annu. Rep. U.S. Natl. Mus. for 1902: 582-583. by implication; Savage and Myers, 2002, Am. Mus. Novit., 3357: 29.
Craugastor megacephalus — Crawford and Smith, 2005, Mol. Phylogenet. Evol., 35: 551. by implication; Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297: 360.
Craugastor (Craugastor) megacephalus — Hedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 38.
None noted.
Lowlands and premontane slopes on the Atlantic versant from southwestern Honduras to central Panama, where it also occurs in uplands on the Pacific versant, from near sea level to 1200 m elevation.
Removed from the synonymy of Strabomantis biporcatus by Savage and Myers, 2002, Am. Mus. Novit., 3357: 29, where it had been placed by Lynch, 1975, Occas. Pap. Mus. Nat. Hist. Univ. Kansas, 38: 1-46. Previously it had been placed in the synonymy of Hylodes rugosus Peters, 1874, by Noble, 1918, Bull. Am. Mus. Nat. Hist., 38: 329. See account by Savage and Myers, 2002, Am. Mus. Novit., 3357:29-34. See account by Savage, 2002, Amph. Rept. Costa Rica: 254-255, who included this species in his Eleutherodactylus fitzingeri series, Eleutherodactylus biporcatus group. McCranie and Wilson, 2002, Amph. Honduras: 356-361, provded an account, written prior to the revision of Savage and Myers of "Eleutherodactylus biporcatus" which likely applies to this species. McCranie, 2007, Herpetol. Rev., 38: 37, summarized the departmental distribution in Honduras. In the Craugastor gulosus species series of Hedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 38. See comments by Sunyer, Páiz, Dehling, and Köhler, 2009, Herpetol. Notes, 2: 189-202, regarding Nicaraguan populations.
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