FIGURE 12 in An inordinate fondness for inconspicuous brown frogs: integration of phylogenomics, archival DNA analysis, morphology, and bioacoustics yields 24 new taxa in the subgenus Brygoomantis (genus Mantidactylus) from Madagascar

FIGURE 12. Audiospectrogram and corresponding oscillogram of two advertisement calls from a regular call series of Mantidactylus alutus, recorded on 21 January 2003 near Antoetra (20.5–21.0°C air temperature). Recording highpass-filtered at 375 Hz.