A contribution to the knowledge of Themus ( Haplothemus ) Wittmer from China (Coleoptera: Cantharidae)

The Chinese fauna of Themus Motschulsky, 1858 is studied. Two new species are described: Themus ( Haplothemus ) quadratiformis sp. nov. (China: Shaanxi) and T . ( H .) longideverticulum sp. nov. (China: Yunnan). Themus ( Haplothemus ) mishmiensis Wittmer, 1973 stat. nov. is elevated to the full-species rank from the subspecies of T. ( H. ) elongatior Pic, 1955, both species are redescribed. The male of T . ( H .) quadratus Wittmer, 1983 and the female of T. ( H. ) weishanensis Kopetz, 2016 are described for the first time. The species are illustrated with aedeagus and habitus of male, abdominal sternite VIII and internal genitalia of female.