Stumpffia megsoni from Montagne d’Ambre in situ. All individuals were calling adult males. a. ZSM 099/2018 (MSZC 0768) calling amongst volcanic rocks; b. An uncollected individual calling in an eroded bowl of a volcanic rock; c. An uncollected individual calling from a tree truck; d. UADBA-A 60225 (MSZC 0764) calling from a fallen log, and e. ZSM 096/2018 (MSZC 0545) calling from the leaf litter on the northern slope of Montagne d’Ambre in transitional humid forest. Specimens shown in a–d were observed in dry forest on the western slope of Montagne d’Ambre. Video footage of calling individuals a–d is available at

  Part of: Rakotoarison A, Glaw F, Rasolonjatovo SM, Razafindraibe JH, Vences M, Scherz MD (2022) Discovery of frogs of the Stumpffia hara species group (Microhylidae, Cophylinae) on Montagne d’Ambre in northern Madagascar, with description of a new species. Evolutionary Systematics 6(1): 21-33.