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| Platymantis guiting Meneses, Pitogo, Decena, Supsup & Brown, 2026 |
Abstract
We describe a new species of miniaturised Platymantis (subgenus Lahatnanguri) from the Romblon Island Group (RIG), Philippines. Previously, the RIG population was treated as Platymantis pygmaeus, a forestdwelling species endemic to Luzon Island due to morphological, ecological, and acoustic similarities. We conducted phylogenetic analyses using 16S mitochondrial DNA sequences and quantified morphological variation across a statistically robust sample size to assess the distinctiveness of the RIG population. Our results recovered the RIG lineage as monophyletic with moderate support (75% bootstrap; 0.83 BPP). Phylogenetic analyses further demonstrate that Platymantis guiting, new species, is not closely related to P. pygmaeus and it is morphologically distinguished by shorter limb proportions and a stereotyped advertisement call characterised by a single-pulsed, repetitive clicking. Named after Mount Guiting-Guiting, the highest peak on Sibuyan Island, this species stands as a powerful reminder of the biogeographic subregion’s fragile and irreplaceable biodiversity. This taxonomic revision highlights the unique herpetological diversity of the RIG and reinforces the need for targeted conservation efforts in this biogeographically significant subregion.
Key words. Sibuyan Island, elevational relief, Lahatnanguri, Philippine biodiversity, conservation, Platymantis guiting
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| Observed colour variation in live specimens of Platymantis guiting, new species, collected from Mt. Guiting-Guiting Natural Park. Photos by Camila G. MENESES. |
Platymantis (Lahatnanguri) guiting, new species
Etymology. The specific epithet guiting is derived from Mount Guiting-Guiting, the highest peak on Sibuyan (and the larger Romblon Island Group), with an elevation of 2,058 m asl. This mountain is a prominent geographical feature of the region and a biodiversity hotspot at the heart of Sibuyan Island, characterised by its unique flora and fauna (Brown & Alcala, 1974; Goodman & Ingle, 1993; Nerz et al., 1997; Lit & Eusebio, 2008; Esselstyn & Goodman, 2010; Brown et al., 2011; Davis et al., 2016; Heaney et al., 2005; Rickart et al., 2005; Siler et al., 2012, 2016; Lucañas, 2021; Tautel & Dupo, 2021; Ermilov & Corpuz-Raros, 2022a, b; Meneses et al., 2022). The name honours the ecological significance of the mountain and its role in conserving locally endemic species of herpetofauna in RIG.
Camila G. MENESES, Kier Mitchel E. PITOGO, Syrus Cesar P. DECENA, Christian E. SUPSUP and Rafe M. BROWN. 2026. A New miniaturised Platymantis (Amphibia: Anura: Ceratobatrachidae) from Sibuyan and Tablas islands, Romblon Island Group, Philippines. RAFFLES BULLETIN OF ZOOLOGY. 74: 197–219. [2026-04-14]
