Dryadobates olfersioides (Lutz, 1925)

Class: Amphibia > Order: Anura > Superfamily: Dendrobatoidea > Family: Aromobatidae > Subfamily: Allobatinae > Genus: Dryadobates > Species: Dryadobates olfersioides

Eupemphix olfersioïdes Lutz, 1925, C. R. Mém. Hebd. Séances Soc. Biol. Filial., Paris, 93 (1925, vol. 2): 138. Syntypes: Not stated; by museum records including MNRJ 783 and (according to Cochran, 1961, Bull. U.S. Natl. Mus., 220: 49) USNM 96412, 96539–40; Verdade and Rodrigues, 2007, J. Herpetol., 41: 572, incorrectly regarded MNRJ 783 as the holotype and noted that it only exists as a piece of flesh. USNM 96540 designated lectotype by Grant, Lyra, Hofreiter, Preick, Barlow, Verdade, and Rodrigues, 2025, Bull. Am. Mus. Nat. Hist., 472: 61, who also noted that the paratypic series is composed of two species. 

Type locality: "Trouvée sur le littoral de l'Etat de Rio-de-Janeiro", Brazil; restricted to "Angra dos Reis, Estado do Rio de Janeiro", Brazil, by Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 40.

Phyllobates olfersioides — Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 40; Bokermann, 1967, Rev. Brasil. Biol., 27: 349.

Colostethus olfersioides — Edwards, 1971, Proc. Biol. Soc. Washington, 84: 148.

Allobates olfersioides — Grant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299: 162.

Dryadobates olfersioides — Grant, Lyra, Hofreiter, Preick, Barlow, Verdade, and Rodrigues, 2025, Bull. Am. Mus. Nat. Hist., 472: 55. 

Common Names

Rio Rocket Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 49).

Distribution

Known exclusively from the area of Angra dos Reis, Rio de Janeiro, Brazil. 

Geographic Occurrence

Natural Resident: Brazil

Endemic: Brazil

Comment

Redelimited by Grant, Lyra, Hofreiter, Preick, Barlow, Verdade, and Rodrigues, 2025, Bull. Am. Mus. Nat. Hist., 472: 55 (who detailed molecular markers, comparative morphology, acoustics, and natural history), rendering much of the literature associated with this nominal taxon seriously out of date, to be employed cautiously. 

Removed from the synonymy of Colostethus brunneus by Edwards, 1971, Proc. Biol. Soc. Washington, 84: 148, where it had been placed by Cochran, 1961, Bull. U.S. Natl. Mus., 220: 49, and Cochran and Goin, 1970, Bull. U.S. Natl. Mus., 288: 48. Prior to the revision of Grant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299, placed in the Colostethus brunneus group (Group II) of Rivero, 1990 "1988", Mem. Soc. Cienc. Nat. La Salle, 48: 3–32. Izecksohn and Carvalho-e-Silva, 2001, Anf. Municipio Rio de Janeiro: 35, provided a brief account and photo. Prior to the revision of Grant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299, Allobates alagoanus, Allobates capixaba, and Allobates carioca had been placed in the Colostethus alagoanus group (Group III) of Rivero, 1990 "1988", Mem. Soc. Cienc. Nat. La Salle, 48: 3–32; or the Colostethus trilineatus group of Morales, 2002 "2000", Publ. Asoc. Amigos Doñana, 13: 1–59 (who provided accounts for this species as Allobates alagoanus). Verdade and Rodrigues, 2007, J. Herpetol., 41: 566–580, provided a revision of the species and placed Allobates alagoanus, Allobates capixaba, and Allobates carioca into synonymy, as well as describing larval morphology and noting that at the time of their writing no recording of the advertisement call could be found. Izecksohn and Carvalho-e-Silva, 2001, Anf. Municipio Rio de Janeiro: 34, provided a brief account (as Allobates carioca) and photo. See comment under Aromobatidae. Forti, Silva, and Toledo, 2017, ZooKeys, 692: 141–153, reported on the acoustic repertoise of Allobates olfersioides suggesting that the synonymy of Allobates alagoanus, Allobates capixaba, and Allobates carioca might have been premature. Juncá, 2006, Biota Neotrop., 6: 1–17, briefly summarized the presence of this species (as Colostethus alagoanus) in the Serra da Jibóia region, Bahia, Brazil, and its habitat. Dubeux, Silva, Nascimento, Gonçalves, and Mott, 2019, Rev. Nordestina Zool., 12: 18–52, summarized the literature on larval morphology. See Dubeux, Nascimento, Lima, Magalhães, Silva, Gonçalves, Almeida, Correia, Garda, Mesquita, Rossa-Feres, and Mott, 2020, Biota Neotrop., 20 (2: e20180718): 1–24, for characterization and identification of larvae north of the Rio São Francisco in the Atlantic Forest of northeastern Brazil. Réjaud, Rodrigues, Crawford, Castroviejo-Fisher, Jaramillo-Martinez, Chaparro, Glaw, Gagliardi-Urrutia, Moravec, De la Riva, Pérez-Peña, Lima, Werneck, Hrbek, Ron, Ernst, Kok, Driskell, Chave, and Fouquet, 2020, J. Biogeograph., 47: 2472–2482, noted that this nominal taxon is composed of several cryptic species. Reported from the Environmental Protection Area of Catolé and Fernão Velho, Alagoas, Brazil, by Dubeux, Nascimento, Gonçalves, and Mott, 2021, Pap. Avulsos Zool., São Paulo, 61 (e20216176): 1–10, who provided a key to the frogs of that region.     

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