Abstract
BACKGROUND: The genus Eresus Walckenaer, 1805, commonly known as the ladybird spiders, comprises 30 species primarily distributed in the Palaearctic, Afrotropical and Oriental Regions as well as South America, with only one species, E. kollari Rossi, 1846, recorded from South Korea. NEW INFORMATION: New taxonomic and distribution data on the genus Eresus Walckenaer, 1805, are provided. A newly-recorded species, E. granosus Simon, 1895, is described along with E. kollari Rossi, 1846 with a detailed description, illustrations and ecological photographs from South Korea.