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

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