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
                                                 Family Colletidae Lepeletier de Saint Fargeau, 1841
                                                   1 Subfamily Colletinae Lepeletier de Saint Fargeau, 1841
                                                   2.1 Subfamily Stenotritinae Cockerell, 1934
                                                   2.2 Subfamily Paracolletinae Cockerell, 1934, nom. protect.
                                                   3 Subfamily Diphaglossinae Vachal, 1909
                                                   4.1 Subfamily Euryglossinae see Tribe Euryglossini Michener, 1944
                                                   4.2.1 Subfamily Hylaeinae Viereck, 1916, nom. protect.
                                                   4.2.2 Subfamily Xeromelissinae Cockerell, 1926 see Tribe Xeromelissini Cockerell, 1926