Elachistocleis surinamensis (Daudin, 1802)

Class: Amphibia > Order: Anura > Family: Microhylidae > Subfamily: Gastrophryninae > Genus: Elachistocleis > Species: Elachistocleis surinamensis

Bufo surinamensis Daudin, 1802 "An. XI", Hist. Nat. Rain. Gren. Crap., Quarto: 91. Type(s): Frog figured on page 90, pl. 33, fig. 2 of the original publication; likely originally in MNHNP. Neotype designated as UWIZM 2016.22.58 by Jowers, Othman, Borzée, Rivas-Fuenmayor, Sánchez-Ramírez, Auguste, Downie, Read, and Murphy, 2021, Organisms Divers. Evol., 21: 199. Type locality: "Surinam". Neotype from "Trinidad, St. George, Arena, Cumuto Rd. (10.5866° N 4–61.23144° W)."

Rana bufonia Merrem, 1820, Tent. Syst. Amph.: 177. Substitute name for Bufo surinamensis Daudin, 1802. Synonymy by Günther, 1859 "1858", Cat. Batr. Sal. Coll. Brit. Mus.: 51.

Elachistocleis surinamensisKenny, 1969, Stud. Fauna Curaçao and other Caribb. Is., 29: 66.

Engystoma surinamense — Dubois, Ohler, and Pyron, 2021, Megataxa, 5: 216. 

English Names

Surinam Oval Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 89).

Northeastern Oval Frog (Hedges, Powell, Henderson, Hanson, and Murphy, 2019, Caribb. Herpetol., 67: 15). 


Provisional: Coastal Venezuela east of Lago Maracaibo through northern Guyana to northeastern Suriname and French Guiana; Trinidad. See comment. 


See comment under Elachistocleis which explains context of retaining this nominal taxon as distinct from Relictivomer pearsei, even though when recognizing Elachistocleis surinamensis, Kenny regarded it as a senior synonym of Relictivomer pearsei. See account by Rivero, 1961, Bull. Mus. Comp. Zool., 126: 177, which probably addressed this species and Elachistocleis nigrogularis as Elachistocleis ovalis.  See account for Suriname population by Ouboter and Jairam, 2012, Amph. Suriname: 278–281, who discussed that all specimens referred to Elachistocleis ovalis from Suriname are assignable to Elachistocleis surinamensis.

See Rivero, Langone, and Prigioni, 1986, Comun. Zool. Mus. Hist. Nat. Montevideo, 11: 6-7. Barrio-Amorós, 1999 "1998", Acta Biol. Venezuelica, 18: 57, commented on the Venezuelan distribution. Lavilla, Vaira, and Ferrari, 2003, Amphibia-Reptilia, 24: 279, regarded this nominal form to cover a complex of species. Murphy, 1997, Amph. Rept. Trinidad Tobago: 93-95, provided an account for Trinidad. See account for Suriname population by Ouboter and Jairam, 2012, Amph. Suriname: 278-279, who noted that all previous records of nominal Elachistocleis ovalis from Suriname are referable to this species. See Barrio-Amorós, Rojas-Runjaic, and Señaris, 2019, Amph. Rept. Conserv., 13 (1: e180): 103, for comments on range and literature. Jowers, Othman, Borzée, Rivas-Fuenmayor, Sánchez-Ramírez, Auguste, Downie, Read, and Murphy, 2021, Organisms Divers. Evol., 21: 189–206, discussed the molecular phylogenetics and identification of this species and drew a provisional map that did not extend either into Suriname or the state of Roraima, Brazil, although reported in the former and expected in the latter. 

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