Audiospectrogram and corresponding oscillogram of a series of advertisement calls (3 calls) of Guibemantis liber (clade NCE1) recorded on 8 February 2000 at Mandraka. Recording band-pass filtered at 1500–4000 Hz.

  Part of: Koppetsch T, Pabijan M, Hutter CR, Köhler J, Gehring P-S, Rakotoarison A, Ratsoavina FM, Scherz MD, Vieites DR, Glaw F, Vences M (2023) An initial molecular resolution of the mantellid frogs of the Guibemantis liber complex reveals three new species from northern Madagascar. Vertebrate Zoology 73: 397-432.