Excidobates mysteriosus (Myers, 1982)

Class: Amphibia > Order: Anura > Superfamily: Dendrobatoidea > Family: Dendrobatidae > Subfamily: Dendrobatinae > Genus: Excidobates > Species: Excidobates mysteriosus

Dendrobates mysteriosus Myers, 1982, Am. Mus. Novit., 2721: 18. Holotype: AMNH 55349, by original designation. Type locality: "vicinity of Santa Rosa, 3000 feet (ca. 900 m.) elevation, upper Río Marañón drainage, Department of Cajamarca, Peru. The type locality lies in the hills northwest of the confluence of the Río Chinchipe with the Río Marañón, at about 5° 22′ S, 78° 41′ W".

Ranitomeya mysteriosaBauer, 1988, Het Paludarium, Netherlands, November: 6.

"Dendrobates" mysteriosusGrant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299: 174. Excluded from Colostethus but not assigned to genus.

Excidobates mysteriosusTwomey and Brown, 2008, Herpetologica, 64: 125.

English Names

Maranon Poison Frog (Walls, 1994, Jewels of the Rainforest: 23; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 50).


A corridor from the vicinity of the type locality (Santa Rosa, Cajamarca Department) southeast about 90 km to Pedro Ruiz, Amazonas Peru.

Geographic Occurrence

Natural Resident: Peru

Endemic: Peru


See Schulte, 1990, Bol. Lima, 12: 57-68, for second locality and discussion of relationships. Schulte, 1999, Pfeilgiftfrösche: 148-157, provided an account. Grant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299: 174, discussed the species, known only from the holotype, and could not allocate it beyond Dendrobatinae, merely retaining it in a non-taxon "Dendrobates". Lötters, Jungfer, Henkel, and Schmidt, 2007, Poison Frogs: 625-626, provided an account. Twomey and Brown, 2008, Herpetologica, 64: 121–137, described the advertisement call. See photograph, map, description of geographic range and habitat, and conservation status (as Dendrobates mysteriosus) in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 229. Twomey, Delia, Fashé, Venegas, and Schulte, 2020, Salamandra, 56: 71–74, provided the Amazonas, Peru, locality and discussed the potential range of the species. 

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