Micarea bebourensis is a species of lichen-forming fungus in the family Ectolechiaceae. It was described as new to science in 2014 from Réunion in the Indian Ocean. The type specimen was collected in the Forêt de Bébour, along the trail to Cassé de Takamaka, in wet montane rainforest at about 1,340 m elevation, where it was found growing on a rotting standing trunk. On Réunion it has been recorded from lower montane forest at roughly 1,200–1,500 m, on decaying wood and on introduced trees including Cryptomeria japonica. The species epithet bebourensis alludes to the name of the forest from which it was collected.