Crawfordia Pierce, 1908 Eurystylops Bohart, 1943 Halictoxenos Pierce, 1908 Hylecthrus Saunders, 1850 Melittostylops Kinzelbach, 1971 Pseudoxenos Saunders, 1872 Stylops Kirby, 1802 Xenos Rossi, 1793 †Jantarostylops Kulicka, 2001 (Baltic amber, Priabonian)[7]