Nepticulidae and Opostegidae of the world

Roscidotoga, a new genus of Nepticulidae, is described. Three new species-R. callicomae, R. eucryphiae and R. sapphiripes-are described, all from rainforest in eastern Australia. Adults, genitalia, larvae, pupal exuviae and mines are illustrated. The larvae are leaf-miners on the Gondwanan plant families Cunoniaceae, Eucryphiaceae and Elaeocarpaceae. The systematic position of the genus is discussed: it is assigned to the subfamily Pectinivalvinae and considered to represent the sister-group of Pectinivalva Scoble, which likewise appears to be endemic to Australia. A revised diagnosis of the two nepticulid subfamilies is presented.