A new species of mantellid frog of the genus Guibemantis from south-eastern Madagascar Author Hutter, Carl R. Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045 - 7561, USA & Museum of Natural Sciences and Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA Author Andriampenomanana, Zo F. Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045 - 7561, USA & Mention Zoologie et Biodiversité Animale, Université d’Antananarivo, BP 906, Antananarivo 101, Madagascar Author Basham, Edmund W. Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA Author Glaw, Frank Zoologische Staatssammlung München (ZSM-SNSB), Münchhausenstr. 21, 81247 München, Germany Author Masotti, Matteo D. The Institute for the Conservation of Tropical Environments, State University of New York at Stony Brook, Stony Brook, NY 11794, USA Author Lambert, Shea M. Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA Author Vences, Miguel Zoologisches Institut, Technische Universität Braunschweig, Mendelssohnstr. 4, 38106 Braunschweig, Germany text Zootaxa 2025 2025-06-16 5647 3 260 274 https://doi.org/10.11646/zootaxa.5647.3.3 journal article 311023 10.11646/zootaxa.5647.3.3 c2c7c748-6c86-49d0-8e60-b9b0eeb4cb87 1175-5326 15819873 8E0BA204-5077-4516-B5ED-98BDDDC1B57D

TABLE 1. Morphometric measurements (in mm) of the holotype and paratype of Guibemantis sioka sp. nov. See Materials and Methods for explanation of abbreviations. nm, not measured; M, male, SA, subadult.

Type status	Holotype	Paratype
Field Number	JJW2366	FGZC 2434
Museum Number	KU 336913	ZSM 319/2005
Sex	M	M (SA?)
SVL	43.0	28.1
HW	13.9	9.0
HL	15.4	11.0
ED	5.1	3.9
TD	2.4	2.3
END	3.9	3.2
NSD	2.9	2.0
NND	4.2	3.3
HAL	15.7	9.2
FORL	32.3	18.4
HIL	75.3	45.6
FOL	24.5	13.1
FOTL	36.2	20.3
TIBL	22.8	14.4
FGL	14.0	nm
FGW	5.5	nm