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| Hylaeus affinis (Smith, 1853) | 0 |
| Hylaeus alocaspidus Snelling, 1975 | 0 |
| Hylaeus amplus Griswold, 2009 | 0 |
| Hylaeus asininus (Cockerell & Casad, 1895) | 0 |
| Hylaeus aspricollis (Vachal, 1901) | 0 |
| Hylaeus aztecus (Cresson, 1869) | 0 |
| Hylaeus callosulus Meado-Waldo, 1923 | 0 |
| Hylaeus calvus (Metz, 1911) | 0 |
| Hylaeus confluens (Smith, 1853) | 0 |
| Hylaeus costaricensis (Friese, 1916) | 0 |
| Hylaeus cruentus (Vachal, 1910) | 0 |
| Hylaeus crustatus (Vachal, 1909) | 0 |
| Hylaeus dearmasi Genaro, 2016 | 0 |
| Hylaeus dictyotus Snelling, 1982 | 0 |
| Hylaeus dominicalis Gibbs, 2020 | 0 |
| Hylaeus dubiosus (Cresson, 1869) | 0 |
| Hylaeus episcopalis (Cockerell, 1896) | 0 |
| Hylaeus episcopalis coquilletti (Cockerell, 1896) | 0 |
| Hylaeus extrinsecus Snelling, 1982 | 0 |
| Hylaeus fedorica (Cockerell, 1909) | 0 |
| Hylaeus flammipes (Robertson, 1893) | 0 |
| Hylaeus floridanus (Robertson, 1893) | 6 |
| Hylaeus formosus Krombein, 1953 | 0 |
| Hylaeus georgicus (Cockerell, 1896) | 4 |
| Hylaeus gracillimus (Schrottky, 1906) | 0 |
| Hylaeus graenicheri Mitchell, 1951 | 0 |
| Hylaeus grossus (Cresson, 1869) | 0 |
| Hylaeus gualanicus (Cockerell, 1912) | 0 |
| Hylaeus hispaniolensis Genaro, 2016 | 0 |
| Hylaeus hurdi Snelling, 1966 | 0 |
| Hylaeus insolitus Snelling, 1966 | 0 |
| Hylaeus knabi (Cockerell, 1918) | 0 |
| Hylaeus limbifrons (Cresson, 1869) | 0 |
| Hylaeus lychnis (Vachal, 1910) | 0 |
| Hylaeus maculatus (Friese, 1921) | 0 |
| Hylaeus maculipennis (Smith, 1879) | 0 |
| Hylaeus maculosus (Friese, 1921) | 0 |
| Hylaeus megalotis (Swenk & Cockerell, 1910) | 0 |
| Hylaeus mesillae (Cockerell, 1896) | 0 |
| Hylaeus mesillae cressoni (Cockerell, 1907) | 0 |
| Hylaeus mesillae mesillae (Cockerell, 1896) | 0 |
| Hylaeus mexicanus (Cresson, 1869) | 0 |
| Hylaeus minutus (Fabricius, 1798) | 0 |
| Hylaeus modestus Say, 1837 | 1 |
| Hylaeus modestus modestus Say, 1837 | 0 |
| Hylaeus nasutus (Vachal, 1910) | 0 |
| Hylaeus nelumbonis (Robertson, 1890) | 3 |
| Hylaeus opaciventris (Friese, 1925) | 0 |
| Hylaeus orbicus (Vachal, 1910) | 0 |
| Hylaeus ornatus Mitchell, 1951 | 4 |
| Hylaeus panamensis Michener, 1954 | 0 |
| Hylaeus phaeoscapus Snelling, 1982 | 0 |
| Hylaeus polifolii (Cockerell, 1901) | 0 |
| Hylaeus quadratiferus (Cockerell, 1912) | 0 |
| Hylaeus rawi Snelling, 1982 | 0 |
| Hylaeus royesi Raw, 1984 | 0 |
| Hylaeus rudbeckiae (Cockerell & Casad, 1895) | 0 |
| Hylaeus rufoclypeatus (Friese, 1916) | 0 |
| Hylaeus schwarzii (Cockerell, 1896) | 3 |
| Hylaeus sejunctus Snelling, 1970 | 0 |
| Hylaeus sonorensis Cockerell, 1924 | 0 |
| Hylaeus sparsus (Cresson, 1869) | 7 |
| Hylaeus subgriseus (Cockerell, 1918) | 0 |
| Hylaeus titanius (Friese, 1925) | 0 |
| Hylaeus transvittatus (Cockerell, 1917) | 0 |
| Hylaeus trivittatus (Friese, 1916) | 0 |
| Hylaeus vigilans (Smith, 1879) | 0 |
| Hylaeus volusiensis Mitchell, 1951 | 0 |
| Hylaeus wootoni (Cockerell, 1896) | 0 |
| Hylaeus zamoranicus (Cockerell, 1949) | 0 |
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