The new species Cyana smithi Volynkin & László, sp. nov. is described from Liberia. The new species belongs to the subgenus Louisia Karisch, 2013 comprising two species, C. (L.) quentini Karisch, 2003 and C. (L.) yaseminae Baron & Karisch, 2016. Adults, male and female genitalia of all three species are illustrated.