| Hylaeus (Analastoroides) foveatus Rayment, 1950 | |
| Hylaeus (Edriohylaeus) ofarrelli Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Euprosopellus) certus (Cockerell, 1921) | ⇒ Hylaeus illinoisensis Robertson, 1896 |
| Hylaeus (Euprosopellus) chrysaspis Cockerell, 1910 | |
| Hylaeus (Euprosopellus) dromedarius Cockerell, 1910 | |
| Hylaeus (Euprosopellus) pergibbosus Cockerell, 1926 | |
| Hylaeus (Euprosopis) disjunctus Cockerell, 1905 | |
| Hylaeus (Euprosopis) elegans Smith, 1853 | Neighbor tagelus |
| Hylaeus (Euprosopis) honestus Smith, 1879 | |
| Hylaeus (Euprosopis) husela Cockerell, 1910 | |
| Hylaeus (Euprosopis) violaceus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Euprosopoides) amatus Cockerell, 1909 | |
| Hylaeus (Euprosopoides) cyanurus Kirby, 1802 | |
| Hylaeus (Euprosopoides) dromedarius Cockerell, 1910 | |
| Hylaeus (Euprosopoides) musgravei Cockerell, 1929 | |
| Hylaeus (Euprosopoides) obtusatus Smith, 1879 | |
| Hylaeus (Euprosopoides) perplexus Smith, 1854 | |
| Hylaeus (Euprosopoides) rotundiceps Smith, 1879 | |
| Hylaeus (Euprosopoides) ruficeps Smith, 1853 | Neighbor tagelus |
| Hylaeus ruficeps kalamundae Cockerell, 1915 | |
| Hylaeus ruficeps ruficeps | |
| Hylaeus (Gephyrohylaeus) sculptus Cockerell, 1911 | |
| Hylaeus (Gnathoprosopis) albonitens Cockerell, 1905 | Colletid bee |
| Hylaeus (Gnathoprosopis) amiculiformis Cockerell, 1909 | |
| Hylaeus (Gnathoprosopis) amiculinus Cockerell, 1922 | |
| Hylaeus (Gnathoprosopis) amiculus Smith, 1879 | |
| Hylaeus (Gnathoprosopis) chromaticus Cockerell, 1912 | |
| Hylaeus (Gnathoprosopis) euxanthus Cockerell, 1910 | |
| Hylaeus (Gnathoprosopis) theodorei Cockerell, 1910 | |
| Hylaeus (Gnathoprosopoides) bituberculatus Smith, 1879 | |
| Hylaeus (Gnathoprosopoides) philoleucus Cockerell, 1910 | |
| Hylaeus (Heterapoides) bacillarius Cockerell, 1914 | |
| Hylaeus (Heterapoides) delicatus Cockerell, 1911 | |
| Hylaeus (Heterapoides) digitatus Houston, 1975 | |
| Hylaeus (Heterapoides) exleyae Houston, 1975 | |
| Hylaeus (Heterapoides) extensus Cockerell, 1916 | |
| Hylaeus (Heterapoides) halictiformis Perkins, 1912 | |
| Hylaeus (Heterapoides) leviceps Houston, 1975 | |
| Hylaeus (Heterapoides) nigriconcavus Houston, 1975 | |
| Hylaeus (Hylaeorhiza) nubilosus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Hylaeteron) douglasi Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Hylaeteron) hemirhodus Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Hylaeteron) riekianus Houston, 1981 | |
| Hylaeus (Hylaeteron) semirufus Cockerell, 1914 | |
| Hylaeus (Hylaeus) communis Nylander, 1852 | Common Yellow Face Bee |
| Hylaeus (Hylaeus) conspicuus Metz, 1911 | |
| Hylaeus (Hylaeus) leptocephalus Morawitz, 1870 | Slender-faced Masked Bee |
| Hylaeus (Laccohylaeus) cyanophilus Cockerell, 1910 | |
| Hylaeus (Macrohylaeus) alcyoneus Erichson, 1842 | Banksia bee |
| Hylaeus (Meghylaeus) fijiensis Cockerell, 1909 | |
| Hylaeus (Nesoprosopis) anomalus Perkins, 1899 | Anomalous yellow-faced bee |
| Hylaeus (Nesoprosopis) anthracinus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Nesoprosopis) chlorostictus Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) connectens Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) difficilis Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) facilis Smith, 1879 | Easy yellow-faced bee |
| Hylaeus (Nesoprosopis) fuscipennis Smith, 1879 | |
| Hylaeus (Nesoprosopis) hirsutulus Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) hostilis Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) pubescens Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) sphecodoides Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Nesoprosopis) volatilis Smith, 1879 | |
| Hylaeus (Nothylaeus) heraldicus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Paraprosopis) asininus Cockerell & ..., 1895 | |
| Hylaeus (Paraprosopis) calvus Metz, 1911 | Bald Masked Bee |
| Hylaeus (Planihylaeus) daviesiae Houston, 1981 | |
| Hylaeus (Planihylaeus) jacksoniae Houston, 1981 | |
| Hylaeus (Planihylaeus) probligenatus Houston, 1981 | |
| Hylaeus (Planihylaeus) quadriceps Smith, 1879 | |
| Hylaeus (Planihylaeus) trilobatus Cockerell, 1910 | |
| Hylaeus (Prosopis) confluens Smith, 1853 | Neighbor tagelus |
| Hylaeus (Prosopis) lateralis Smith, 1879 | |
| Hylaeus (Prosopis) modestus Say, 1837 | Modest Masked Bee |
| Hylaeus (Prosopis) rugulosus Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Prosopis) signatus Panzer, 1798 | Large yellow-face bee |
| Hylaeus (Prosopis) trinotatus Perez, 1895 | |
| Hylaeus (Prosopisteron) accipitris Cockerell, 1914 | |
| Hylaeus (Prosopisteron) agilis Smith, 1876 | Purplish tagelus |
| Hylaeus (Prosopisteron) albozebratus Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Prosopisteron) amatulus Cockerell, 1922 | |
| Hylaeus (Prosopisteron) aralis Cockerell, 1916 | |
| Hylaeus (Prosopisteron) asperithorax Rayment, 1927 | |
| Hylaeus (Prosopisteron) auriferus Cockerell, 1918 | |
| Hylaeus (Prosopisteron) basilautus Rayment, 1953 | |
| Hylaeus (Prosopisteron) baudinensis Cockerell, 1905 | |
| Hylaeus (Prosopisteron) bicoloratus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Prosopisteron) bicuneatus Cockerell, 1910 | |
| Hylaeus (Prosopisteron) bidentatus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Prosopisteron) brevior Cockerell, 1918 | |
| Hylaeus (Prosopisteron) burnsi Michener, 1965 | |
| Hylaeus (Prosopisteron) capitosus Smith, 1876 | Purplish tagelus |
| Hylaeus (Prosopisteron) chlorosoma Cockerell, 1913 | |
| Hylaeus (Prosopisteron) chlorosomus Cockerell, 1913 | |
| Hylaeus (Prosopisteron) cliffordiellus Rayment, 1953 | |
| Hylaeus (Prosopisteron) crassifemoratus Cockerell, 1922 | |
| Hylaeus (Prosopisteron) cyaneomicans Cockerell, 1910 | |
| Hylaeus (Prosopisteron) distractus Cockerell, 1914 | |
| Hylaeus (Prosopisteron) eugeniellus Cockerell, 1910 | |
| Hylaeus (Prosopisteron) flavojugatus Cockerell, 1912 | |
| Hylaeus (Prosopisteron) frederici Cockerell, 1905 | |
| Hylaeus (Prosopisteron) greavesi Rayment, 1935 | |
| Hylaeus (Prosopisteron) hobartiellus Cockerell, 1929 | |
| Hylaeus (Prosopisteron) innocens Cameron, 1898 | |
| Hylaeus (Prosopisteron) kermadecensis Donovan, 2007 | |
| Hylaeus (Prosopisteron) leai Cockerell, 1912 | |
| Hylaeus (Prosopisteron) littleri Cockerell, 1918 | |
| Hylaeus (Prosopisteron) matamoko Donovan, 2007 | |
| Hylaeus (Prosopisteron) mediovirens Cockerell, 1913 | |
| Hylaeus (Prosopisteron) microphenax Cockerell, 1910 | |
| Hylaeus (Prosopisteron) minusculus Cockerell, 1913 | |
| Hylaeus (Prosopisteron) murihiku Donovan, 2007 | |
| Hylaeus (Prosopisteron) nigrescens Cockerell, 1918 | |
| Hylaeus (Prosopisteron) perhumilis Cockerell, 1914 | |
| Hylaeus (Prosopisteron) primulipictus Cockerell, 1905 | |
| Hylaeus (Prosopisteron) quadratus Smith, 1853 | Neighbor tagelus |
| Hylaeus (Prosopisteron) relegatus Smith, 1876 | Purplish tagelus |
| Hylaeus (Prosopisteron) sanguinipictus Cockerell, 1914 | |
| Hylaeus (Prosopisteron) scintillans Cockerell, 1922 | |
| Hylaeus (Prosopisteron) scintilliformis Cockerell, 1913 | |
| Hylaeus (Prosopisteron) scintillus Cockerell, 1912 | |
| Hylaeus (Prosopisteron) semipersonatus Cockerell, 1929 | |
| Hylaeus (Prosopisteron) serotinellus Cockerell, 1906 | |
| Hylaeus (Prosopisteron) simplus Houston, 1993 | |
| Hylaeus (Prosopisteron) subcoronatus Rayment, 1935 | |
| Hylaeus (Prosopisteron) trimerops Cockerell, 1916 | |
| Hylaeus (Prosopisteron) turgicollaris Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Prosopisteron) vittatifrons Cockerell, 1913 | |
| Hylaeus (Prosopisteron) wilsoni Rayment, 1928 | |
| Hylaeus (Prosopisteron) woyensis Rayment, 1939 | |
| Hylaeus (Prosopisteron) wynyardensis Cockerell, 1929 | |
| Hylaeus (Prosopisteron) xanthaspis Cockerell, 1910 | |
| Hylaeus (Prosopisteron) xanthopsyche Cockerell, 1922 | |
| Hylaeus (Pseudhylaeus) albocuneatus Cockerell, 1913 | |
| Hylaeus (Pseudhylaeus) albomaculatus Smith, 1879 | |
| Hylaeus (Pseudhylaeus) hypoleucus Cockerell, 1918 | |
| Hylaeus (Pseudhylaeus) mirandus Rayment, 1930 | |
| Hylaeus (Pseudhylaeus) multigibbosus Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Rhodohylaeus) ancoratus Cockerell, 1912 | |
| Hylaeus (Rhodohylaeus) ceniberus Cockerell, 1910 | |
| Hylaeus (Rhodohylaeus) constrictiformis Cockerell, 1910 | |
| Hylaeus (Rhodohylaeus) constrictus Cockerell, 1905 | |
| Hylaeus (Rhodohylaeus) coronatulus Cockerell, 1914 | |
| Hylaeus (Rhodohylaeus) coronatus Cockerell, 1905 | |
| Hylaeus (Rhodohylaeus) indecisus Cockerell, 1929 | |
| Hylaeus (Rhodohylaeus) lateralis Smith, 1879 | |
| Hylaeus (Rhodohylaeus) maiellus Rayment, 1935 | |
| Hylaeus (Rhodohylaeus) melanocephalus Cockerell, 1922 | |
| Hylaeus (Rhodohylaeus) perrufus Cockerell, 1929 | |
| Hylaeus (Rhodohylaeus) proximus Smith, 1879 | |
| Hylaeus (Rhodohylaeus) rufipes Smith, 1853 | Neighbor tagelus |
| Hylaeus (Rhodohylaeus) semicastaneus Cockerell, 1918 | |
| Hylaeus (Sphaerhylaeus) bicolorellus Michener, 1965 | Mountain cave amphipod |
| Hylaeus (Sphaerhylaeus) globuliferus Cockerell, 1929 | Woolybush Bee |
| Hylaeus (Xenohylaeus) desertoris Houston, 1981 | |
| Hylaeus (Xenohylaeus) kelvini Cockerell, 1912 | |
| Hylaeus (Xenohylaeus) leptospermi Cockerell, 1922 | |
| Hylaeus (Xenohylaeus) scutaticornis Michener, 1965 | Mountain cave amphipod |
| Hylaeus akoko Daly & Magnacca, 2003 | |
| Hylaeus amatiformis (Cockerell, 1929) | ⇒ Hylaeus obtusatus Smith, 1879 |
| Hylaeus andrenoides Perkins, 1899 | Boreal Whiteface |
| Hylaeus angustulus Perkins, 1899 | Boreal Whiteface |
| Hylaeus anmelanocephalus Rayment, 1954 | |
| Hylaeus assimulans Perkins, 1899 | Boreal Whiteface |
| Hylaeus blanchae Rayment, 1953 | |
| Hylaeus borchii Rayment, 1935 | |
| Hylaeus callosus Cockerell, 1910 | |
| Hylaeus colei Rayment, 1935 | |
| Hylaeus coniceps Blackburn, 1886 | Boxelder leaf gall midge |
| Hylaeus crabronoides Perkins, 1899 | Boreal Whiteface |
| Hylaeus dictyotus Snelling, 1982 | Many-colored tellin |
| Hylaeus dimidiatus Perkins, 1899 | Boreal Whiteface |
| Hylaeus dumetorum Perkins, 1899 | Boreal Whiteface |
| Hylaeus elongatus Smith, 1879 | |
| Hylaeus filicum Perkins, 1911 | |
| Hylaeus flavifrons W. F. Kirby, 1880 | Pear midge |
| Hylaeus flavipes Smith, 1853 | Neighbor tagelus |
| Hylaeus formosus Krombein, 1953 | |
| Hylaeus gibbonsi (Cockerell, 1929) | ⇒ Hylaeus kelvini Cockerell, 1912 |
| Hylaeus guamensis Cockerell, 1914 | |
| Hylaeus haematopodus Cockerell, 1913 | |
| Hylaeus haleakalae Perkins, 1899 | Boreal Whiteface |
| Hylaeus hilaris Smith, 1879 | |
| Hylaeus hula Perkins, 1911 | |
| Hylaeus huselus Cockerell, 1910 | |
| Hylaeus illinoisensis Robertson, 1896 | |
| Hylaeus infans Cockerell, 1910 | |
| Hylaeus inquilina Perkins, 1899 | Boreal Whiteface |
| Hylaeus iridipennis Schrottky, 1906 | |
| Hylaeus kauaiensis Perkins, 1899 | Boreal Whiteface |
| Hylaeus kokeensis Daly & Magnacca, 2003 | |
| Hylaeus kona Blackburn, 1886 | Boxelder leaf gall midge |
| Hylaeus kuakea Daly & Magnacca, 2003 | |
| Hylaeus kukui Daly & Magnacca, 2003 | |
| Hylaeus lactiferus Cockerell, 1910 | |
| Hylaeus laetus Perkins, 1899 | Boreal Whiteface |
| Hylaeus liogonius Vachal, 1899 | |
| Hylaeus longiceps Perkins, 1899 | Boreal Whiteface |
| Hylaeus longmani (Cockerell, 1929) | ⇒ Amphylaeus obscuriceps Friese, 1924 |
| Hylaeus lubbocki Cockerell, 1905 | |
| Hylaeus major Strand, 1912 | |
| Hylaeus makaha Magnacca, 2011 | |
| Hylaeus mana Daly & Magnacca, 2003 | |
| Hylaeus melaleucae Rayment, 1953 | |
| Hylaeus meriti Rayment, 1935 | |
| Hylaeus metopii | |
| Hylaeus mimicus Daly & Magnacca, 2003 | |
| Hylaeus muranus Warncke, 1970 | |
| Hylaeus murrayensis Rayment, 1935 | |
| Hylaeus murrumbidgeanus Houston, 1981 | |
| Hylaeus mutatus Perkins, 1899 | Boreal Whiteface |
| Hylaeus nigroconcavus | |
| Hylaeus nivicola Meade-Waldo, 1923 | Grape blossom midge |
| Hylaeus ombrias Perkins, 1899 | |
| Hylaeus paradoxicus Perkins, 1899 | Boreal Whiteface |
| Hylaeus pele Perkins, 1911 | |
| Hylaeus penangensis Cockerell, 1920 | |
| Hylaeus perconstrictus (Cockerell, 1929) | ⇒ Hylaeus chrysaspis Cockerell, 1910 |
| Hylaeus perconvergens (Michener, 1965) | ⇒ Hylaeus obtusatus Smith, 1879 |
| Hylaeus perpictus Rayment, 1935 | |
| Hylaeus pictulus Michener, 1965 | Mountain cave amphipod |
| Hylaeus procurvus Rayment, 1939 | |
| Hylaeus psammobius Perkins, 1899 | |
| Hylaeus rieki (Michener, 1965) | ⇒ Hylaeus leptospermi Cockerell, 1922 |
| Hylaeus satelles Blackburn, 1886 | Boxelder leaf gall midge |
| Hylaeus setosifrons Perkins, 1899 | Boreal Whiteface |
| Hylaeus simillimus | |
| Hylaeus solaris Daly & Magnacca, 2003 | |
| Hylaeus specularis Perkins, 1899 | Boreal Whiteface |
| Hylaeus strenuus Cameron, 1897 | Plasterer bee |
| Hylaeus subconstrictus Cockerell, 1922 | |
| Hylaeus sublateralis Cockerell, 1914 | |
| Hylaeus subplebeius Cockerell, 1905 | |
| Hylaeus takumiae Daly & Magnacca, 2003 | |
| Hylaeus tuamotuensis Michener, 1965 | Mountain cave amphipod |
| Hylaeus ulaula Magnacca, 2011 | |
| Hylaeus unicus Perkins, 1899 | Boreal Whiteface |
| Hylaeus volcanicus Perkins, 1899 | Boreal Whiteface |
| Hylaeus xanthognathus Rayment, 1935 | |
| Hyleoides abnormis Houston, 1975 | |
| Hyleoides bivulnerata Cockerell, 1921 | |
| Hyleoides concinna Fabricius, 1775 | Common Wasp-mimic Bee |
| Hyleoides concinna collaris Friese, 1924 | |
| Hyleoides concinna ruficollaris Rayment, 1935 | |
| Hyleoides concinnula Cockerell, 1909 | |
| Hyleoides planifrons Houston, 1975 | |
| Hyleoides striatula Cockerell, 1921 | |
| Hyleoides waterhousei Cockerell, 1913 | |
| Hyleoides zonalis Smith, 1853 | Stout tagelus |
