Taxonomic notes on the little-known genus Metahelotella Kirejtshuk (Coleoptera, Cucujoidea, Helotidae) from southwestern China, with description of a new species and two new records

<i>Metahelotella alatonotata</i> <b>sp. nov.</b> is described from Yunnan, China. Habitus and diagnostic characters of the new species are illustrated. <i>Metahelotella semifulva</i> (Ritsema, 1881) and <i>Metahelotella immaculata</i> (Ritsema, 1891) are newly recorded from China. A distribution map of the genus <i>Metahelotella</i> in Indochina and southwestern China and a taxonomic key to all species are provided.