This family includes 55 genera and 771 species (Vercammen-Grandjean, 1973; Zhang et. al., 2011). Larvae of many these genera are ectoparasites of insects, millipedes, or arachnids, whereas postlarval instars are predatory. One genus, Leptus, occurs on bees. In addition, an unidentified genus was recorded from the Philippines from Apis cerana (Malabanan and Corpuz-Raros, 1998).