Two new species of micropterigids, Vietomartyria nankunshana Hirowatari & Hashimoto sp. nov. and V. nanlingana Hirowatari & Jinbo sp. nov., are described from Nankunshan and Nanling (Guangdong, China), respectively. The genus Vietomartyria Hashimoto & Mey, 2000, which was originally established as a monotypic genus, is redefined based on the following autapomorphies shared by the three species: (i) the long basal stalk of each flagellomere; (ii) the many (>100) minute serrate projections near the gonopore of aedeagus; and (iii) the gonopore situated dorsally near the apex.
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