Two new genera and four new species of the Diptilomiopidae from Thailand were described. They areKhamroka tomentosi gen. nov., sp. nov. on Ellipanthus tomentosus Kurz, Salaya takhronami gen. nov, sp. nov.on Sisyrolepis muricata (Pierre) Leenh. Diptilomiopus mandongii sp. nov. on Cordia dichotoma G. Forst. and Diptilomiopus khatkhaii sp. nov. on Oxyceros horridus Lour.