TrogiumTrogium is a genus of granary booklice in the family Trogiidae. There are about eight described species in Trogium.SpeciesThese eight species belong to the genus Trogium:Trogium apterum Broadhead & Richards, 1982Trogium braheicola Garcia Aldrete, 1983Trogium evansorum Smithers, 1994Trogium lapidarium Trogium picticeps Badonnel, 1976Trogium pulsatorium Trogium stellatum Trogium vanharteni Lienhard, 2008