Omalisidae is a family of beetles, in the large suborder Polyphaga. It contains twelve species in two genera: \n* Genus Omalisus Geoffrey, 1762 \n* Omalisus flavangulus (Spåth, 1898) \n* Omalisus fontisbellaquaei Geoffroy in Fourcroy, 1785 \n* Omalisus graecus (Pic, 1901) \n* Omalisus minutus (Pic, 1938) \n* Omalisus nicaeensis (Lesne, 1921) \n* Omalisus nigricornis (Reitter, 1881) \n* Omalisus sanguinipennis (Laporte de Castelnau, 1840) \n* Omalisus taurinensis (Baudi, 1871) \n* Omalisus unicolor (Costa, 1857) \n* Omalisus victoris (Mulsant, 1852) \n* Genus Thilmanus Baudi, 1872 \n* Thilmanus longipennis Pic, 1912 \n* Thilmanus obscurus Baudi, 1872