AbstractBackgroundDespite being the second largest group of vascular plants, ferns are scarcely reported being fed by insects when compared to angiosperms. Within these fern-feeding insects, lepidopterans are poorly represented and are restricted only to specific groups in this speciose order. The consumers specialising on fern spores are even scarcer in the order, with the majority being consumers of vegetative structures. Amongst the fern-spore-feedingLepidoptera,Stathmopodidaeis the family with the highest species diversity, even with a subfamily,CyprininaeSinev, 2015, specialising on fern spores. However, fern-spore-feeding habit is not restricted to this subfamily. To understand the evolution of fern-spore-feeding within this family and to increase our knowledge of insect-fern evolution, detailed studies on fern-spore feeding stathmopodids are essential.New informationThe present study rediscovered a rare, fern-spore-feeding, stathmopodid micro-moth,Stathmopodatacita(Meyrick, 1913), which has not been formally recorded or identified for more than 100 years. We documented the life history of this species and identified several species ofPyrrosia(Polypodiaceae,Platycerioideae) as host for the moth’s larvae. A re-description of the fern-feeding moth is also provided as the original description is obscure in terms of character diagnosis.