Haroldius jechaer sp. nov. from Yunnan province, China, is described and illustrated. The new species resembles H. stevensi Arrow, 1931 in having a large body (length 3.8 mm) and a small semi-elliptic bordered area near the base of the pronotum. Both species can be separated mainly by their different colour, punctation and macrosetation of the dorsal surface. An updated annotated checklist of all described species of Haroldius Boucomont, 1914 is added.