Iliodiscus dubius Miranda-Ribeiro, 1920, Rev. Mus. Paulista, São Paulo, 12: 268. Syntypes: MZUSP 320 (8 specimens); MZUSP 647 designated lectotype by Bokermann, 1951, Arq. Mus. Nac., Rio de Janeiro, 42: 85. Type locality: "Alto da Serra (S. Paulo)", Brazil. Given as "Paranapiacaba (= Alto da Serra), São Paulo", Brazil by Bokermann, 1966, Lista Anot. Local. Tipo Anf. Brasil.: 68.
Grypiscus dubius — Barbour, 1925, Copeia, 138: 8.
Cycloramphus dubius — Bokermann, 1951, Arq. Mus. Nac., Rio de Janeiro, 42: 85.
Sao Paulo Button Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 71).
State of São Paulo, Brazil.
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