Amphibia

Rocha, Carlos Frederico Duarte, Telles, Felipe Bottona da Silva, Vrcibradic, Davor & Nogueira-Costa, Paulo, 2018, The Herpetofauna from Ilha Grande (Angra dos Reis, Rio de Janeiro, Brazil): updating species composition, richness, distribution and endemisms, Papéis Avulsos de Zoologia 58, pp. 1-12 : 7-8

Amphibia

Chiasmocleis – Specimens of this genus recorded at Ilha Grande have been usually referred as Chiasmocleis sp. ( Rocha et al., 2000, 2001, 2004 a, 2009; Ariani et al., 2006; van Sluys et al., 2007; Goyannes-Araújo et al., 2015). Rocha et al. (2004a) and Goyannes-Araújo et al. (2015) commented that the Chiasmocleis from Ilha Grande was an undescribed species. Bittencourt-Silva & Silva (2013), on the other hand, referred to the species occurring in Ilha Grande as C. carvalhoi (now C. lacrimae ; see Peloso et al., 2014). Tonini et al. (2014), in a molecular phylogenetic analysis of the C. lacrimae and C. capixaba complexes, used DNA sequences of three specimens of Chiasmocleis from “Angra dos Reis, Rio de Janeiro” housed at the herpetological collection of the Universidade Federal Rural do Rio de Janeiro.Those specimens (RU 7003-05; referred as RN 7003-05 in Tonini et al., 2014) are actually from Ilha Grande, and are determined as Chiasmocleis gr. carvalhoi in that collection’s catalog (curiously, they are not list- ed in the Appendix I of Bittencourt-Silva & Silva, 2013). In Tonini et al. ’s (2014) phylogeny their DNA sequences grouped with other samples from the states of Rio de Janeiro and São Paulo in a clade that those authors considered to be assignable to C. lacrimae (sensu strictu). Thus, the species of Chiasmocleis that occurs in Ilha Grande can be referred to C.lacrimae (assuming that only one species of that genus occurs there).

Cycloramphus – Both Rocha et al. (2009) and Bittencourt- Silva & Silva (2013) listed two species of the genus Cycloramphus for Ilha Grande: Cycloramphus boraceiensis and C. fuliginosus . In the Appendix of their article, Bittencourt-Silva & Silva (2013) cite a voucher number for C. boraceiensis but none for C. fuliginosus , instead referring to the citation by Rocha et al. (2009) to justify its presence on the list (indeed, C. fuliginosus is the only species in their list for which no voucher specimens are mentioned). The specimen cited in that work (MNRJ 48118) was checked by the authors at the collection of the Museu Nacional. The name C. boraceiensis was written in the label inside the vial in which it is kept, but in the museum catalog this same specimen is referred as C. fuliginosus . Thus, it seems that the records of two species of Cycloramphus for Ilha Grande are based on a single specimen. Cycloramphus boraceiensis is the only species of the genus previously reported for Ilha Grande ( Heyer, 1983). Heyer’s (1983) record of this species for the island is based on an individual in the Museu Nacional (MNRJ 2241, also examined by us) that had been collect- ed by H. Sick in 1944. During fieldwork at the RBEPS one of us (FBST) collected three individuals of Cycloramphus (subsequently deposited at the Museu Nacional under the numbers MNRJ 89138-40). Using Heyer’s (1983) dichotomic key to the species of Cycloramphus known at the time and making direct comparisons with MNRJ 2241 we were able to confirm the identification of MNRJ 48118 as C. boraceiensis and to determine that our three new specimens were C. boraceiensis as well. Thus, it seems that C. boraceiensis is currently the only species of the genus known to occur at Ilha Grande and, therefore, C. fuliginosus should be excluded from the island’s list of amphibians.

Ischnocnema – Ischnocnema octavioi was first report- ed for Ilha Grande by Rocha et al. (2000, 2001), but that record was later found to be based on two misidentified specimens of I guentheri (Vrcibradic et al., 2008) . Bittencourt-Silva & Silva (2013) reported the occurrence of I octavioi in Ilha Grande based on a third specimen, MNRJ 60158 (the two previously mentioned specimens, MNRJ 47972-73, were correctly listed by them under I guentheri ). The specimen MNRJ 60158 was collected by a colleague and is, in fact, I octavioi , which confirms the occurrence of this species in the island.

Physalaemus – There were two specimens at the Museu Nacional determined as Physalamus angrensis (MNRJ 56473-74), having been collected at Praia do Sul. Those specimens were re-examined and re-identified as young individuals of Physalaemus signifer (M. Woitovicz- Cardoso, pers. comm.), a relatively common species in Ilha Grande, where it occurs in various localities, including the RBEPS ( Table 1).