| Hylaeus (Cephalylaeus) basalis Smith, 1853 | Basal Masked Bee |
| Hylaeus (Cephalylaeus) nunenmacheri Bridwell, 1919 | |
| Hylaeus (Deranchylaeus) lightfooti Bridwell, 1919 | |
| Hylaeus (Euprosopis) disjunctus Cockerell, 1905 | |
| Hylaeus (Euprosopoides) amatus Cockerell, 1909 | |
| Hylaeus (Gnathoprosopis) albonitens Cockerell, 1905 | Colletid bee |
| Hylaeus (Gnathoprosopis) amiculus Smith, 1879 | |
| Hylaeus (Heterapoides) leviceps Houston, 1975 | |
| Hylaeus (Hylaeana) graenicheri Mitchell, 1951 | Graenicher´s Masked Bee |
| Hylaeus (Hylaeana) knabi Cockerell, 1918 | |
| Hylaeus (Hylaeus) annulatus Linnaeus, 1758 | Annulate Masked Bee |
| Hylaeus (Hylaeus) communis Nylander, 1852 | Common Yellow Face Bee |
| Hylaeus (Hylaeus) conspicuus Metz, 1911 | |
| Hylaeus (Hylaeus) hellenicus Dathe, 2000 | |
| Hylaeus (Hylaeus) labiatifrons Cockerell, 1896 | |
| Hylaeus (Hylaeus) leptocephalus Morawitz, 1870 | Slender-faced Masked Bee |
| Hylaeus (Hylaeus) maritimus Bridwell, 1910 | |
| Hylaeus (Hylaeus) mesillae Cockerell, 1896 | Mesilla Masked Bee |
| Hylaeus mesillae cressoni Cockerell, 1907 | Cresson'S Masked Bee |
| Hylaeus (Hylaeus) rudbeckiae Cockerell & ..., 1895 | |
| Hylaeus (Hylaeus) saniculae Robertson, 1896 | |
| Hylaeus (Hylaeus) sejunctus Snelling, 1970 | |
| Hylaeus (Hylaeus) verticalis Cresson, 1869 | Vertical Masked Bee |
| Hylaeus (Lambdopsis) annularis (Kirby, 1802) | ⇒ Hylaeus annularis Kirby, 1802 |
| Hylaeus (Lambdopsis) crassanus Warncke, 1972 | |
| Hylaeus (Lamdopsis) annularis Kirby, 1802 | |
| Hylaeus (Macrohylaeus) alcyoneus Erichson, 1842 | Banksia bee |
| Hylaeus (Metziella) sparsus Cresson, 1869 | Broad-Faced Masked Bee |
| 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 (Paraprosopis) asininus Cockerell & ..., 1895 | |
| Hylaeus (Paraprosopis) calvus Metz, 1911 | Bald Masked Bee |
| Hylaeus (Paraprosopis) coloradensis Cockerell, 1896 | |
| Hylaeus (Paraprosopis) georgicus Cockerell, 1898 | |
| Hylaeus (Paraprosopis) hohmanni Dathe, 1993 | |
| Hylaeus (Paraprosopis) lunicraterius Snelling, 1970 | |
| Hylaeus (Paraprosopis) megalotis Swenk & Cock..., 1910 | |
| Hylaeus (Paraprosopis) nevadensis Cockerell, 1896 | |
| Hylaeus (Paraprosopis) personatellus Cockerell, 1915 | |
| Hylaeus (Paraprosopis) pictipes Nylander, 1852 | Colletid bee |
| Hylaeus (Paraprosopis) polifolii Cockerell, 1901 | |
| Hylaeus (Paraprosopis) sonorensis Cockerell, 1924 | |
| Hylaeus (Paraprosopis) wootoni Cockerell, 1896 | |
| Hylaeus (Planihylaeus) probligenatus Houston, 1981 | |
| Hylaeus (Prosopis) affinis Smith, 1853 | Eastern Masked Bee |
| Hylaeus (Prosopis) confluens Smith, 1853 | Neighbor tagelus |
| Hylaeus (Prosopis) confusus Nylander, 1852 | White-Jawed Yellow-Face |
| Hylaeus (Prosopis) episcopalis Cockerell, 1896 | |
| Hylaeus episcopalis coquilletti | Coquillett´s Yellow-masked Bee |
| Hylaeus (Prosopis) incongruus Förster, 1871 | White-lipped yellow-face bee |
| Hylaeus (Prosopis) modestus Say, 1837 | Modest Masked Bee |
| Hylaeus (Prosopis) nelumbonis Robertson, 1890 | Nelumbo Masked Bee |
| Hylaeus (Prosopis) ornatus Mitchell, 1951 | |
| Hylaeus (Prosopis) rugulosus Perkins, 1899 | Boreal Whiteface |
| Hylaeus (Prosopis) schwarzii Cockerell, 1896 | Schwarz'S Masked Bee |
| Hylaeus (Prosopis) transvittatus Cockerell, 1917 | |
| Hylaeus (Prosopis) tuertonis Cockerell, 1906 | |
| Hylaeus (Prosopis) variegatus Fabricius, 1798 | Masked bee |
| Hylaeus (Prosopis) volusiensis Mitchell, 1951 | |
| Hylaeus (Prosopisteron) relegatus Smith, 1876 | Purplish tagelus |
| Hylaeus (Spatulariella) hyalinatus (Smith, 1842) | ⇒ Hylaeus milossa Warncke, 1981 |
| Hylaeus (Spatulariella) iranicus Dathe, 1980 | |
| Hylaeus (Spatulariella) punctatus Brullé, 1832 | Punctate Masked Bee |
| Hylaeus (Sphaerhylaeus) globuliferus Cockerell, 1929 | Woolybush Bee |
| Hylaeus (Xenohylaeus) leptospermi Cockerell, 1922 | |
| Hylaeus aenigmus Viereck, 1903 | |
| Hylaeus akoko Daly & Magnacca, 2003 | |
| Hylaeus andrenoides Perkins, 1899 | Boreal Whiteface |
| Hylaeus angustulus Perkins, 1899 | Boreal Whiteface |
| Hylaeus assimulans Perkins, 1899 | Boreal Whiteface |
| Hylaeus bisinuatus (Förster, 1871) | ⇒ Hylaeus leptocephalus Morawitz, 1870 |
| Hylaeus coniceps Blackburn, 1886 | Boxelder leaf gall midge |
| Hylaeus cookii Metz, 1911 | |
| Hylaeus crabronoides Perkins, 1899 | Boreal Whiteface |
| Hylaeus dimidiatus Perkins, 1899 | Boreal Whiteface |
| Hylaeus dumetorum Perkins, 1899 | Boreal Whiteface |
| Hylaeus fedorica Cockerell, 1909 | |
| Hylaeus filicum Perkins, 1911 | |
| Hylaeus flavifrons W. F. Kirby, 1880 | Pear midge |
| Hylaeus flavipes Smith, 1853 | Neighbor tagelus |
| Hylaeus floridanus Robertson, 1893 | |
| Hylaeus formosus Krombein, 1953 | |
| Hylaeus gabonicus Vachal, 1899 | |
| Hylaeus gaigei Cockerell, 1916 | |
| Hylaeus granulatus Metz, 1911 | |
| Hylaeus haleakalae Perkins, 1899 | Boreal Whiteface |
| Hylaeus hilaris Smith, 1879 | |
| Hylaeus hula Perkins, 1911 | |
| Hylaeus hurdi Snelling, 1966 | |
| Hylaeus hydrangeae | |
| Hylaeus illinoisensis Robertson, 1896 | |
| Hylaeus inquilina Perkins, 1899 | Boreal Whiteface |
| Hylaeus insolitus Snelling, 1966 | |
| 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 laetus Perkins, 1899 | Boreal Whiteface |
| Hylaeus longiceps Perkins, 1899 | Boreal Whiteface |
| Hylaeus major Strand, 1912 | |
| Hylaeus makaha Magnacca, 2011 | |
| Hylaeus mana Daly & Magnacca, 2003 | |
| Hylaeus metopii | |
| Hylaeus milossa Warncke, 1981 | |
| Hylaeus mimicus Daly & Magnacca, 2003 | |
| Hylaeus muranus Warncke, 1970 | |
| Hylaeus mutatus Perkins, 1899 | Boreal Whiteface |
| Hylaeus nivicola Meade-Waldo, 1923 | Grape blossom midge |
| Hylaeus ombrias Perkins, 1899 | |
| Hylaeus oregonensis | |
| Hylaeus paradoxicus Perkins, 1899 | Boreal Whiteface |
| Hylaeus pele Perkins, 1911 | |
| Hylaeus proteae Cockerell, 1942 | |
| Hylaeus psammobius Perkins, 1899 | |
| Hylaeus rufipedoides Strand, 1911 | |
| Hylaeus setosifrons Perkins, 1899 | Boreal Whiteface |
| Hylaeus solaris Daly & Magnacca, 2003 | |
| Hylaeus specularis Perkins, 1899 | Boreal Whiteface |
| Hylaeus strenuus Cameron, 1897 | Plasterer bee |
| Hylaeus takumiae Daly & Magnacca, 2003 | |
| Hylaeus timberlakei Snelling, 1970 | |
| Hylaeus ulaula Magnacca, 2011 | |
| Hylaeus unicus Perkins, 1899 | Boreal Whiteface |
| Hylaeus volcanicus Perkins, 1899 | Boreal Whiteface |
| Hyleoides concinna Fabricius, 1775 | Common Wasp-mimic Bee |
