Silverstoneia flotator (Dunn, 1931)

Class: Amphibia > Order: Anura > Superfamily: Dendrobatoidea > Family: Dendrobatidae > Subfamily: Colostethinae > Genus: Silverstoneia > Species: Silverstoneia flotator

Phyllobates flotator Dunn, 1931, Occas. Pap. Boston Soc. Nat. Hist., 5: 389–390. Holotype: MCZ 16006, by original designation. Type locality: "Barro Colorado Island, Panama Canal Zone", Panama.

Phyllobates nubicola flotatorDunn, 1933, Occas. Pap. Boston Soc. Nat. Hist., 8: 74.

Colostethus flotatorMaxson and Myers, 1985, Biotropica, 17: 50–56; Ibáñez D. and Smith, 1995, Copeia, 1995: 446–456.

Silverstoneia flotatorGrant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299: 167.

English Names

Rainforest Rocket Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 48).


Lowland rainforest and semideciduous forests of Panama and Costa Rica; possibly extending into extreme southeastern Nicaragua.

Geographic Occurrence

Natural Resident: Costa Rica, Panama


Maxson and Myers, 1985, Biotropica, 17: 50–56, Rand and Myers, 1990, in Gentry (ed.), Four Neotropical Rainforests: 390, and Myers, 1991, Am. Mus. Novit., 3010: 6, recognized this species as distinct from Silverstoneia nubicola (as Colostethus). Status reaffirmed by Ibáñez D. and Smith, 1995, Copeia, 1995: 446–456, who also provided an account. Lips and Savage, 1996, Proc. Biol. Soc. Washington, 109: 17–26, included this species (as Colostethus flotator) in a key to the tadpoles found in Costa Rica. See account by Savage, 2002, Amph. Rept. Costa Rica: 378–380, who noted that undescribed species may remain under this name. See comments on morphology and range by Grant and Myers, 2013, Am. Mus. Novit., 3784: 39–40, who also suggested that the Costa Rican and Panamania populations may not be conspecific and the reidentified specimens from near the Colombian border as Silverstoneia nubicola. Köhler, 2011, Amph. Cent. Am.: 139, provided compared the species of Siverstoneia in Central America and provided a map and photograph of this species. McCranie, Sunyer, and Martínez-Fonseca, 2019, Rev. Nicaraguense Biodiversidad, 52: 29, suggested the species would be found in southeastern Nicaragua. Dias, Anganoy-Criollo, Rada, and Grant, 2021, J. Zool. Syst. Evol. Res., 59: 691–717, reported on larval external, internal, and buccal anatomy. 

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