Kingdom [Animalia] Linnaeus, 1758 - animals
   Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval. - ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997 [Lake, Halanych, Servin & Garey 2020]
     Panarthropoda Nielsen, 1995 - panarthropods
       Tritocerebra see [unranked] Tactopoda Budd, 2001
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Mandibulata Snodgrass, 1938
             Infraphylum Atelocerata see [unranked] Mandibulata
               Superclass Panhexapoda
                 Epiclass Hexapoda Latreille, 1825 see Superclass Hexapoda Latreille, 1825
                   Class Insecta Linnaeus, 1758 - insects
                     Dicondylia Haeckel, 1866 see Subclass Dicondylia Haeckel, 1866
                       Pterygota Lang, 1888 see Infraclass Pterygota Lang, 1888
                         Metapterygota
                           Neoptera Martynov, 1923
                             Eumetabola
                               Holometabola
                                 Superorder Hymenopterida
                                   Order Hymenoptera Linnaeus, 1758 - ants, bees, and wasps
                                     Neohymenoptera
                                       Euhymenoptera
                                         Suborder Apocrita Gerstaecker, 1867
                                           Aculeata Latreille, 1802
                                             Superfamily Apoidea Latreille, 1802
                                               Anthophila Latreille, 1804 - bees
                                                 1 Family Colletidae Lepeletier de Saint Fargeau, 1841
                                                 2.1 Family Halictidae Thomson, 1869, nom. protect.
                                                 2.2.1 Family Andrenidae Latreille, 1802
                                                 2.2.2.1 Family †Paleomelittidae M.S. Engel, 2001
                                                 2.2.2.2.1 Family Melittidae Schenck, 1860
                                                 2.2.2.2.2.1 Family Megachilidae Latreille, 1802
                                                 2.2.2.2.2.2 Family Apidae Latreille, 1802