Review of the genus Ressia Sinev, 1988 (Lepidoptera: Cosmopterigidae), with descriptions of four new species from China Author Zhang, Di College of Life Sciences, Nankai University, Tianjin 300071, China Author Li, Houhun College of Life Sciences, Nankai University, Tianjin 300071, China & College of Life and Geographic Sciences, Kashi University, Kashi 844000, China; Xinjiang Key Laboratory of Biological Resources and Ecology of Pamirs Plateau, Kashi 844000, China text Zootaxa 2023 2023-10-30 5360 4 583 592 https://www.mapress.com/zt/article/download/zootaxa.5360.4.7/52135 journal article 10.11646/zootaxa.5360.4.7 1175-5326 10152774 E967718F-F071-49BC-B69D-D4D0E8979530 Ressia tonkinella Sinev, 1988 Ressia tonkinella Sinev, 1988: 116 . TL: Vietnam (Bacthai). TD: ZIN. Diagnosis. Ressia tonkinella can be distinguished by the forewing with four distal speckles and the male pleural lobes with two ventroapical processes; in the male genitalia by the stalk of the valva geniculate medially ( Sinev 1988 , p. 115, fig. 13). Distribution. Vietnam ( Tonkin ).