Sabatinca pouilloni Ngô-Muller and Nel sp. nov., the fourth Micropterigidae moth from the mid-Cretaceous Burmese amber, is described and illustrated. Its hind wing R is complete, a symplesiomorphic character state only present in the extant New Zealand ‘Sabatinca calliarcha clade’. The new fossil species does not belong to the same group than the three previously micropterigid species from the same amber, suggesting that the genus Sabatinca diversified earlier than 100 Ma, well before the recently proposed date of 80 Ma.