Amphibia, Anura, Eleutherodactylidae, Adelophryne adiastola Hoogmoed and Lescure, 1984: first countries records and distribution extension from Ecuador and Brazil

The family Eleutherodactylidae (Amphibia: Anura) consists of the caribbean clade (Eleutherodactylus) and its closest mainland relatives (Diasporus, Adelophryne, and Phyzelaphryne) that comprises a total of 199 species (Hedges et al. 2008). The genus Adelophryne Hoogmoed and Lescure, 1984, as currently defined, contains five minute leaf litter and semifossorial frogs: Adelophryne adiastola Hoogmoed and Lescure, 1984; Adelophryne baturitensis Hoogmoed, Borges, and Cascon, 1994; Adelophryne gutturosa Hoogmoed and Lescure, 1984; Adelophryne maranguapensis Hoogmoed, Borges, and Cascon, 1994; and Adelophryne pachydactyla Hoogmoed, Borges, and Cascon, 1994 (Hedges et al. 2008). These species are characterized mainly by having terminal discs on digits barely expanded, apically pointed, with circumferential grooves; finger IV reduced with two (A. adiastola and A. pachydactyla) or three (A. baturitensis, A. gutturosa, and A. maranguapensis) phalanges; head no wider than body; maximum SVL in males 12.6 mm and in females 17 mm (Duellman and Mendelson 1995; Hedges et al. 2008). This genus has a discontinuous distribution through northeastern Brazil (A. baturitensis, A. maranguapensis, and A. pachydactyla), in the Guiana shield region in northeastern South America (A. gutturosa), and in the Upper Amazon basin (A. adiastola) (Frost 2007; Hedges et al. 2008).