# List of Hylaeus species

This is a list of 744 species in the genus Hylaeus, masked bees.

## Hylaeus species

* Hylaeus aberrans (Bridwell, 1919)$^{icg}$
* Hylaeus abjunctus Cockerell, 1936$^{icg}$
* Hylaeus aborigensis Dathe, 1994$^{icg}$
* Hylaeus absolutus (Gribodo, 1894)$^{icg}$
* Hylaeus absonulus Cockerell, 1936$^{icg}$
* Hylaeus abyssinicus (Alfken, 1905)$^{icg}$
* Hylaeus acariphorus Snelling, 1985$^{icg}$
* Hylaeus accipitris (Cockerell, 1914)$^{icg}$
* Hylaeus acer Dathe, 1980$^{icg}$
* Hylaeus adamauanis Dathe, 2015$^g$
* Hylaeus adriaticus (Warncke, 1972)$^{icg}$
* Hylaeus advocatus (Nurse, 1903)$^{icg}$
* Hylaeus aenigmus (Viereck, 1903)$^{icg}$
* Hylaeus affinis (Smith, 1853)$^{icgb}$
* Hylaeus agilis (Smith, 1876)$^{icg}$
* Hylaeus akoko Magnacca & Daly, 2003$^{icg}$
* Hylaeus alampes Moure, 1942$^{icg}$
* Hylaeus albocuneatus (Cockerell, 1913)$^{icg}$
* Hylaeus albomaculatus (Smith, 1879)$^{icg}$
* Hylaeus albonitens (Cockerell, 1905)$^{icg}$
* Hylaeus albonotatus (Walker, 1871)$^{icg}$
* Hylaeus albozebratus Michener, 1965$^{icg}$
* Hylaeus alcyoneus (Erichson, 1842)$^{icg}$
* Hylaeus alexandrinus (Warncke, 1992)$^{icg}$
* Hylaeus alfkeni (Friese, 1913)$^{icg}$
* Hylaeus alocaspidus Snelling, 1975$^{icg}$
* Hylaeus alpinus (Morawitz, 1867)$^{icg}$
* Hylaeus altaicus Dathe, 1986$^{icg}$
* Hylaeus amatulus (Cockerell, 1922)$^{icg}$
* Hylaeus amatus (Cockerell, 1909)$^{icg}$
* Hylaeus amazonicus (Gribodo, 1894)$^{icg}$
* Hylaeus amelanocephalus Rayment, 1954$^{icg}$
* Hylaeus ameliae Cockerell, 1942$^{icg}$
* Hylaeus amharicus Dathe, 2014$^g$
* Hylaeus amiculiformis (Cockerell, 1909)$^{icg}$
* Hylaeus amiculinus (Cockerell, 1922)$^{icg}$
* Hylaeus amiculus (Smith, 1879)$^{icg}$
* Hylaeus ancoratus (Cockerell, 1912)$^{icg}$
* Hylaeus andrenoides (Perkins, 1899)$^{icg}$
* Hylaeus angustatus (Schenck, 1861)$^{icg}$
* Hylaeus angustifrons Morawitz, 1876$^{icg}$
* Hylaeus angustulus (Perkins, 1899)$^{icg}$
* Hylaeus anmelanocephalus Rayment, 1954$^{icg}$
* Hylaeus annularis (Kirby, 1802)$^{icg}$
* Hylaeus annulatus (Linnaeus, 1758)$^{icgb}$
* Hylaeus anomalus (Perkins, 1899)$^{icg}$
* Hylaeus anthracinus (Smith, 1853)$^{icg}$
* Hylaeus aralis (Cockerell, 1916)$^{icg}$
* Hylaeus araxanus (Warncke, 1981)$^{icg}$
* Hylaeus arenarius Morawitz, 1876$^{icg}$
* Hylaeus armeniacus (Warncke, 1981)$^{icg}$
* Hylaeus arnoldi (Friese, 1913)$^{icg}$
* Hylaeus arsenicus (Vachal, 1901)$^{icg}$
* Hylaeus asiaticus (Dalla Torre, 1896)$^{icg}$
* Hylaeus asininus (Cockerell & Casad, 1895)$^{icg}$
* Hylaeus asper (Vachal, 1909)$^{icg}$
* Hylaeus asperithorax (Rayment, 1927)$^{icg}$
* Hylaeus aspricollis (Vachal, 1901)$^{icg}$
* Hylaeus assimulans (Perkins, 1899)$^{icg}$
* Hylaeus aterrimus (Friese, 1911)$^{ic}$
* Hylaeus atriceps (Friese, 1911)$^{icg}$
* Hylaeus atripes (Vachal, 1901)$^{icg}$
* Hylaeus auriferus (Cockerell, 1918)$^{icg}$
* Hylaeus azorae (Warncke, 1992)$^{icg}$
* Hylaeus aztecus (Cresson, 1869)$^{icg}$
* Hylaeus bacillarius (Cockerell, 1914)$^{icg}$
* Hylaeus basalis (Smith, 1853)$^{icgb}$
* Hylaeus basilautus (Rayment, 1953)$^{icg}$
* Hylaeus basimacula (Cameron, 1904)$^{icg}$
* Hylaeus basirufus (Vachal, 1910)$^{icg}$
* Hylaeus baudinensis (Cockerell, 1905)$^{icg}$
* Hylaeus beaumonti (Benoist, 1943)$^{icg}$
* Hylaeus bellicosus (Cameron, 1897)$^{icg}$
* Hylaeus benguetensis (Cockerell, 1919)$^{icg}$
* Hylaeus benoisti Michener, 2000$^{icg}$
* Hylaeus bequaerti (Schrottky, 1910)$^{icg}$
* Hylaeus bequaertianus Bridwell, 1919$^{icg}$
* Hylaeus bernhardi Dathe, 2014$^g$
* Hylaeus bertonii (Schrottky, 1907)$^{icg}$
* Hylaeus bevisi (Cockerell, 1917)$^{icg}$
* Hylaeus biarmicus (Warncke, 1992)$^{icg}$
* Hylaeus bicoloratus (Smith, 1853)$^{icg}$
* Hylaeus bicolorellus Michener, 1965$^{icg}$
* Hylaeus bicuneatus (Cockerell, 1910)$^{icg}$
* Hylaeus bidentatus (Smith, 1853)$^{icg}$
* Hylaeus bifasciatus (Jurine, 1807)$^{icg}$
* Hylaeus binotatus (Alfken, 1914)$^{icg}$
* Hylaeus binus (Vachal, 1909)$^{icg}$
* Hylaeus bipunctatus (Fabricius, 1798)$^{icg}$
* Hylaeus biscutellus (Vachal, 1909)$^{icg}$
* Hylaeus bituberculatus (Smith, 1879)$^{icg}$
* Hylaeus blanchae Rayment, 1953$^{icg}$
* Hylaeus bolivianus (Schrottky, 1910)$^{icg}$
* Hylaeus boninensis Yasumatsu, 1955$^{icg}$
* Hylaeus borchii Rayment, 1935$^{icg}$
* Hylaeus borneensis (Cockerell, 1920)$^{icg}$
* Hylaeus bothros (Schrottky, 1910)$^{icg}$
* Hylaeus bouyssoui (Vachal, 1899)$^{icg}$
* Hylaeus brachycephalus (Morawitz, 1868)$^{icg}$
* Hylaeus brachyceratomerus (Moure, 1941)$^{icg}$
* Hylaeus brasiliensis (Schrottky, 1910)$^{icg}$
* Hylaeus braunsi (Alfken, 1905)$^{icg}$
* Hylaeus breviceps Morawitz, 1876$^{icg}$
* Hylaeus brevicornis Nylander, 1852$^{icg}$
* Hylaeus brevior (Cockerell, 1918)$^{icg}$
* Hylaeus breviradius (Vachal, 1901)$^{icg}$
* Hylaeus bridwelli Ikudome, 1989$^{icg}$
* Hylaeus buddhae Meade-Waldo, 1923$^{icg}$
* Hylaeus burnsi (Michener, 1965)$^{ic}$
* Hylaeus caarendyensis (Schrottky, 1906)$^{icg}$
* Hylaeus callosulus Meade-Waldo, 1923$^{icg}$
* Hylaeus callosus (Cockerell, 1910)$^{icg}$
* Hylaeus calvus (Metz, 1911)$^{icgb}$
* Hylaeus camerunensis Dathe, 2014$^g$
* Hylaeus canariensis Erlandsson, 1983$^{icg}$
* Hylaeus capicola (Alfken, 1914)$^{icg}$
* Hylaeus capitosus (Smith, 1876)$^{icg}$
* Hylaeus cardioscapus Cockerell, 1924$^{icg}$
* Hylaeus cecidonastes Moure, 1972$^{icg}$
* Hylaeus ceniberus (Cockerell, 1910)$^{icg}$
* Hylaeus certus (Cockerell, 1921)$^{icg}$
* Hylaeus cervinus (Warncke, 1992)$^{icg}$
* Hylaeus chasanensis (Romankova, 1995)$^{icg}$
* Hylaeus chimani Dathe, 2014$^g$
* Hylaeus chlorosomus (Cockerell, 1913)$^{icg}$
* Hylaeus chlorostictus (Perkins, 1899)$^{icg}$
* Hylaeus chromaticus (Cockerell, 1912)$^{icg}$
* Hylaeus chrysaspis (Cockerell, 1910)$^{icg}$
* Hylaeus chukar (Warncke, 1992)$^{icg}$
* Hylaeus cinereus (Warncke, 1992)$^{icg}$
* Hylaeus claviger (Cockerell)$^g$
* Hylaeus clavigerus (Cockerell, 1936)$^{icg}$
* Hylaeus cliffordiellus Rayment, 1953$^{icg}$
* Hylaeus clypearis (Schenck, 1853)$^{icg}$
* Hylaeus cockerelli (Schrottky, 1906)$^{icg}$
* Hylaeus colei Rayment, 1935$^{icg}$
* Hylaeus coloradensis (Cockerell, 1896)$^{icg}$
* Hylaeus communis Nylander, 1852$^{icg}$
* Hylaeus concinnus Cockerell, 1924$^{icg}$
* Hylaeus confluens (Smith, 1853)$^{icg}$
* Hylaeus conformis Förster, 1871$^{icg}$
* Hylaeus confusus Nylander, 1852$^{icg}$
* Hylaeus coniceps (Blackburn, 1886)$^{icg}$
* Hylaeus connectens (Perkins, 1899)$^{icg}$
* Hylaeus conspicuus (Metz, 1911)$^{icg}$
* Hylaeus constrictiformis (Cockerell, 1910)$^{icg}$
* Hylaeus constrictus (Cockerell, 1905)$^{icg}$
* Hylaeus contradictus (Cockerell, 1919)$^{icg}$
* Hylaeus convergens Dathe, 2000$^{icg}$
* Hylaeus cookii (Metz, 1911)$^{icg}$
* Hylaeus coriaceus (Pérez, 1895)$^{icg}$
* Hylaeus cornutus Curtis, 1831$^{icg}$
* Hylaeus coroicensis (Cockerell, 1918)$^{icg}$
* Hylaeus coronatulus (Cockerell, 1914)$^{icg}$
* Hylaeus coronatus (Cockerell, 1905)$^{icg}$
* Hylaeus costaricensis (Friese, 1917)$^{ic}$
* Hylaeus crabronoides (Perkins, 1899)$^{icg}$
* Hylaeus crassanus (Warncke, 1972)$^{icg}$
* Hylaeus crassifemoratus (Cockerell, 1922)$^{icg}$
* Hylaeus cribellatus (Vachal, 1901)$^{icg}$
* Hylaeus cribratus (Bridwell, 1919)$^{icg}$
* Hylaeus crispulus Dathe, 1980$^{icg}$
* Hylaeus cruentus (Vachal, 1910)$^{icg}$
* Hylaeus crustatus (Vachal, 1909)$^{icg}$
* Hylaeus culiciformis (Schrottky, 1906)$^{icg}$
* Hylaeus cuneiferus (Cockerell, 1919)$^{icg}$
* Hylaeus curtellus Moure, 1960$^{icg}$
* Hylaeus curtulus (Vachal, 1910)$^{icg}$
* Hylaeus curvicarinatus (Cameron, 1905)$^{icg}$
* Hylaeus cuscoanus (Strand, 1911)$^{icg}$
* Hylaeus cyaneomicans (Cockerell, 1910)$^{icg}$
* Hylaeus cyanophilus (Cockerell, 1910)$^{icg}$
* Hylaeus cyanurus (Kirby, 1802)$^{icg}$
* Hylaeus cypricolus (Warncke, 1972)$^{icg}$
* Hylaeus damascenus (Magretti, 1890)$^{icg}$
* Hylaeus dathei Chen & Xu$^g$
* Hylaeus daviesiae Houston, 1981$^{icg}$
* Hylaeus decaoctus (Warncke, 1992)$^{icg}$
* Hylaeus deceptorius (Benoist, 1959)$^{icg}$
* Hylaeus delicatus (Cockerell, 1911)$^{icg}$
* Hylaeus dentiferellus (Strand, 1912)$^{icg}$
* Hylaeus desertoris Houston, 1981$^{icg}$
* Hylaeus dictyotus Snelling, 1982$^{icg}$
* Hylaeus difficilis (Perkins, 1899)$^{icg}$
* Hylaeus difformis (Eversmann, 1852)$^{icg}$
* Hylaeus digitatus (Houston, 1975)$^{icg}$
* Hylaeus dilatatus (Kirby, 1802)$^g$
* Hylaeus dimidiatus (Perkins, 1899)$^{icg}$
* Hylaeus dinkleri (Friese, 1898)$^{icg}$
* Hylaeus diplonymus (Schulz, 1906)$^{icg}$
* Hylaeus disjunctus (Cockerell, 1905)$^{icg}$
* Hylaeus distractus (Cockerell, 1914)$^{icg}$
* Hylaeus dolichocephalus Morawitz, 1876$^{icg}$
* Hylaeus dominae Cockerell, 1936$^{icg}$
* Hylaeus donbakeri Dathe, 1995$^{icg}$
* Hylaeus dorni Dathe, 1986$^{icg}$
* Hylaeus douglasi Michener, 1965$^{icg}$
* Hylaeus dregei (Strand, 1912)$^{icg}$
* Hylaeus dromedarius (Cockerell, 1910)$^{icg}$
* Hylaeus dubiosus (Cresson, 1869)$^{icg}$
* Hylaeus duckei (Alfken, 1904)$^{icg}$
* Hylaeus dumetorum (Perkins, 1899)$^{icg}$
* Hylaeus eardleyi Dathe, 2014$^g$
* Hylaeus ebmeri Dathe, 1980$^{icg}$
* Hylaeus elatus (Warncke, 1981)$^{icg}$
* Hylaeus elegans (Smith, 1853)$^{ic}$
* Hylaeus elongatus (Smith, 1879)$^{icg}$
* Hylaeus emir Dathe, 2000$^{icg}$
* Hylaeus episcopalis (Cockerell, 1896)$^{icgb}$
* Hylaeus eugeniellus (Cockerell, 1910)$^{icg}$
* Hylaeus euphorbiae Dathe, 2015$^g$
* Hylaeus eurygnathus Snelling, 1980$^{icg}$
* Hylaeus euryscapus Förster, 1871$^{icg}$
* Hylaeus euxanthus (Cockerell, 1910)$^{icg}$
* Hylaeus excelsus (Alfken, 1931)$^{icg}$
* Hylaeus exiguus (Schrottky, 1902)$^{icg}$
* Hylaeus exleyae (Houston, 1975)$^{icg}$
* Hylaeus expansus (Vachal, 1909)$^{icg}$
* Hylaeus extensicornis Cockerell, 1936$^{icg}$
* Hylaeus extensus (Cockerell, 1916)$^{icg}$
* Hylaeus extrinsecus Snelling, 1982$^{icg}$
* Hylaeus facilis (Smith, 1879)$^{icg}$
* Hylaeus feai (Vachal, 1895)$^{icg}$
* Hylaeus fedorica (Cockerell, 1909)$^{icg}$
* Hylaeus fedtschenkoi Cockerell, 1906$^g$
* Hylaeus femoralis (Schrottky, 1902)$^{icg}$
* Hylaeus fertoni (Vachal, 1891)$^{icg}$
* Hylaeus fijiensis (Cockerell, 1909)$^{icg}$
* Hylaeus filicum (Perkins, 1911)$^{icg}$
* Hylaeus finitimus (Perkins, 1899)$^{icg}$
* Hylaeus fissus (Vachal, 1901)$^{icg}$
* Hylaeus flammipes (Robertson, 1893)$^{icg}$
* Hylaeus flavifrons (W. F. Kirby, 1880)$^{icg}$
* Hylaeus flavipes (Smith, 1853)$^{icg}$
* Hylaeus flaviscutum (Alfken, 1914)$^{icg}$
* Hylaeus flavohumeralis (Cockerell, 1918)$^{icg}$
* Hylaeus flavojugatus (Cockerell, 1912)$^{icg}$
* Hylaeus floralis (Smith, 1873)$^{icg}$
* Hylaeus floridanus (Robertson, 1893)$^{icg}$
* Hylaeus formosus Krombein, 1953$^{icg}$
* Hylaeus fortis Cockerell, 1936$^{icg}$
* Hylaeus fossifer Dathe, 1995$^{icg}$
* Hylaeus foveatus (Rayment, 1950)$^{icg}$
* Hylaeus fraternus (Bingham, 1898)$^{icg}$
* Hylaeus frederici (Cockerell, 1905)$^{ic}$
* Hylaeus friesei (Alfken, 1904)$^{icg}$
* Hylaeus frontalis Morawitz, 1876$^{icg}$
* Hylaeus fuliginosus (Warncke, 1970)$^{icg}$
* Hylaeus fumata (Strand, 1912)$^{icg}$
* Hylaeus funereus (Warncke, 1992)$^{icg}$
* Hylaeus fuscipennis (Smith, 1879)$^{icg}$
* Hylaeus gabonicus (Vachal, 1899)$^{icg}$
* Hylaeus gaigei (Cockerell, 1916)$^{icg}$
* Hylaeus garrulus (Warncke, 1981)$^{icg}$
* Hylaeus garzettus (Warncke, 1992)$^{icg}$
* Hylaeus gaullei (Vachal, 1899)$^{icg}$
* Hylaeus gazagnairei (Vachal, 1891)$^{icg}$
* Hylaeus geminus (Vachal, 1910)$^{icg}$
* Hylaeus genualis (Vachal, 1909)$^{icg}$
* Hylaeus georgicus (Cockerell, 1898)$^{icg}$
* Hylaeus gessianus Dathe, 2014$^g$
* Hylaeus gibbus Saunders, 1850$^{icg}$
* Hylaeus gigas (Friese, 1911)$^{icg}$
* Hylaeus glacialis Morawitz, 1872$^{icg}$
* Hylaeus gliddenae Magnacca & Daly, 2003$^{icg}$
* Hylaeus globula (Vachal, 1903)$^{icg}$
* Hylaeus globuliferus (Cockerell, 1929)$^{icg}$
* Hylaeus graafii Cockerell, 1936$^{icg}$
* Hylaeus gracilicornis (Morawitz, 1867)$^{icg}$
* Hylaeus gracillimus (Schrottky, 1902)$^{icg}$
* Hylaeus graenicheri Mitchell, 1951$^{icgb}$
* Hylaeus granulatus (Metz, 1911)$^{icg}$
* Hylaeus greavesi (Rayment, 1935)$^{icg}$
* Hylaeus gredleri Förster, 1871$^{icg}$
* Hylaeus gressitti Hirashima, 1979$^{icg}$
* Hylaeus gribodoi (Vachal, 1895)$^{icg}$
* Hylaeus grossus (Cresson, 1869)$^{icg}$
* Hylaeus gualanicus (Cockerell, 1912)$^{icg}$
* Hylaeus guamensis (Cockerell, 1914)$^{icg}$
* Hylaeus guaraniticus (Schrottky, 1906)$^{icg}$
* Hylaeus gujaraticus (Nurse, 1903)$^{icg}$
* Hylaeus haematopodus (Cockerell, 1913)$^{icg}$
* Hylaeus haemorrhous (Benoist, 1946)$^{icg}$
* Hylaeus haladanius Dathe, 2015$^g$
* Hylaeus haleakalae (Perkins, 1899)$^{icg}$
* Hylaeus halictiformis (Perkins, 1912)$^{icg}$
* Hylaeus hameri Dathe, 1995$^{icg}$
* Hylaeus haygoodi Bridwell, 1919$^{icg}$
* Hylaeus heliacus (Warncke, 1992)$^{icg}$
* Hylaeus hellenicus Dathe, 2000$^{icg}$
* Hylaeus hemirhodus Michener, 1965$^{icg}$
* Hylaeus heraldicus (Smith, 1853)$^{icg}$
* Hylaeus heteroclitus Hirashima, 1967$^{icg}$
* Hylaeus hilaris (Smith, 1879)$^{icg}$
* Hylaeus hirashimai Ikudome, 1989$^{icg}$
* Hylaeus hirsutulus (Perkins, 1899)$^{icg}$
* Hylaeus hirticaudus Cockerell, 1939$^{icg}$
* Hylaeus hobartiellus Cockerell, 1929$^{icg}$
* Hylaeus hohmanni Dathe, 1993$^{icg}$
* Hylaeus honestus (Smith, 1879)$^{icg}$
* Hylaeus hostilis (Perkins, 1899)$^{icg}$
* Hylaeus hula (Perkins, 1911)$^{icg}$
* Hylaeus hungaricus (Alfken, 1905)$^{icg}$
* Hylaeus hurdi Snelling, 1966$^{icg}$
* Hylaeus huselus (Cockerell, 1910)$^{icg}$
* Hylaeus hyalinatus Smith, 1842$^{icgb}$
* Hylaeus hydrophilus (Schrottky, 1906)$^{icg}$
* Hylaeus hyperpunctatus (Strand, 1909)$^{icg}$
* Hylaeus hypoleucus (Cockerell, 1918)$^{icg}$
* Hylaeus hyrcanius Dathe, 1980$^{icg}$
* Hylaeus ibericus Dathe, 2000$^{icg}$
* Hylaeus iheringi (Schrottky, 1910)$^{icg}$
* Hylaeus ikedai (Yasumatsu, 1936)$^{icg}$
* Hylaeus illinoisensis (Robertson, 1896)$^{icg}$
* Hylaeus immarginatus (Alfken, 1914)$^{icg}$
* Hylaeus imparilis Förster, 1871$^{icg}$
* Hylaeus implicatus Dathe, 1980$^{icg}$
* Hylaeus impressiventris (Benoist, 1960)$^{icg}$
* Hylaeus incomitatus Snelling, 1970$^{icg}$
* Hylaeus incongruus Förster, 1871$^g$
* Hylaeus indecisus Cockerell, 1929$^{icg}$
* Hylaeus indistinctus Morawitz, 1890$^{icg}$
* Hylaeus infans (Cockerell, 1910)$^{icg}$
* Hylaeus infulatus Snelling, 1985$^{icg}$
* Hylaeus innocens (Cameron, 1898)$^{icg}$
* Hylaeus inquilina (Perkins, 1899)$^{icg}$
* Hylaeus insolitus Snelling, 1966$^{icg}$
* Hylaeus insularum Yasumatsu & Hirashima, 1965$^{icg}$
* Hylaeus iranicus Dathe, 1980$^{icg}$
* Hylaeus iridipennis (Schrottky, 1906)$^{icg}$
* Hylaeus irritans Dathe, 1980$^{icg}$
* Hylaeus isochromus Cockerell, 1936$^{icg}$
* Hylaeus itapuensis (Schrottky, 1906)$^{icg}$
* Hylaeus izikosalis Dathe, 2014$^g$
* Hylaeus jacksoniae Houston, 1981$^{icg}$
* Hylaeus jacobsoni (Friese, 1914)$^{icg}$
* Hylaeus jantaris Dathe, 1980$^{icg}$
* Hylaeus jirisanensis Chen & Xu$^g$
* Hylaeus joergenseni (Schrottky, 1906)$^{icg}$
* Hylaeus kahri Förster, 1871$^{icg}$
* Hylaeus kashmirensis (Nurse, 1903)$^{icg}$
* Hylaeus kasindensis Cockerell, 1936$^{icg}$
* Hylaeus kaszabi Dathe, 1986$^{icg}$
* Hylaeus kauaiensis (Perkins, 1899)$^{icg}$
* Hylaeus kelvini (Cockerell, 1912)$^{icg}$
* Hylaeus kermadecensis Donovan, 2007$^{icg}$
* Hylaeus knabi (Cockerell, 1918)$^{icg}$
* Hylaeus koenigsmanni Dathe, 1981$^{icg}$
* Hylaeus kokeensis Magnacca & Daly, 2003$^{icg}$
* Hylaeus kona (Blackburn, 1886)$^{icg}$
* Hylaeus koreaensis Chen & Xu$^g$
* Hylaeus kotschisus (Warncke, 1981)$^{icg}$
* Hylaeus kozlovi Dathe & Proshchalykin$^g$
* Hylaeus krebsianus (Strand, 1912)$^{icg}$
* Hylaeus krombeini Snelling, 1980$^{icg}$
* Hylaeus kuakea Magnacca & Daly, 2003$^{icg}$
* Hylaeus kukui Magnacca & Daly, 2003$^{icg}$
* Hylaeus kurdus (Warncke, 1981)$^{icg}$
* Hylaeus labiatifrons (Cockerell, 1896)$^{icg}$
* Hylaeus lactiferus (Cockerell, 1910)$^{icg}$
* Hylaeus lactipennis (Benoist, 1957)$^{icg}$
* Hylaeus laetus (Perkins, 1899)$^{icg}$
* Hylaeus larocai Moure, 1972$^{icg}$
* Hylaeus lateralis (Smith, 1879)$^{icg}$
* Hylaeus leai (Cockerell, 1912)$^{icg}$
* Hylaeus lemuriae (Benoist, 1945)$^{icg}$
* Hylaeus lepidulus Cockerell, 1924$^{icg}$
* Hylaeus leptocephalus (Morawitz, 1870)$^{icgb}$
* Hylaeus leptospermi (Cockerell, 1922)$^{icg}$
* Hylaeus leucolippa (Friese, 1913)$^{icg}$
* Hylaeus leviceps (Houston, 1975)$^{icg}$
* Hylaeus libericus (Cockerell, 1936)$^{icg}$
* Hylaeus lightfooti Bridwell, 1919$^{icg}$
* Hylaeus limbifrons (Cresson, 1869)$^{icg}$
* Hylaeus lineaticeps (Friese, 1913)$^{icg}$
* Hylaeus lineolatus (Schenck, 1861)$^{icg}$
* Hylaeus liogonius (Vachal, 1899)$^{icg}$
* Hylaeus littleri (Cockerell, 1918)$^{ic}$
* Hylaeus livius (Warncke, 1992)$^{icg}$
* Hylaeus longiceps (Perkins, 1899)$^{icg}$
* Hylaeus longimaculus (Alfken, 1936)$^{icg}$
* Hylaeus longulus (Pérez, 1903)$^{icg}$
* Hylaeus lubbocki (Cockerell, 1905)$^{icg}$
* Hylaeus luctuosus (Benoist, 1944)$^{icg}$
* Hylaeus lumbellus (Vachal, 1910)$^{icg}$
* Hylaeus lunicraterius Snelling, 1970$^{icg}$
* Hylaeus luteobalteatus (Dours, 1872)$^{icg}$
* Hylaeus luzonicus (Cockerell, 1914)$^{icg}$
* Hylaeus lychnis (Vachal, 1910)$^{icg}$
* Hylaeus macilentus Ikudome, 1989$^{icg}$
* Hylaeus maculatus (Alfken, 1904)$^{icg}$
* Hylaeus maculipennis (Smith, 1879)$^{icg}$
* Hylaeus maculipes (Cockerell, 1936)$^{icg}$
* Hylaeus maculosus (Friese, 1921)$^{icg}$
* Hylaeus maderensis (Cockerell, 1921)$^g$
* Hylaeus magnificus Cockerell, 1942$^{icg}$
* Hylaeus magrettii (Vachal, 1892)$^{icg}$
* Hylaeus mahafaly Hensen, 1987$^{icg}$
* Hylaeus maiellus Rayment, 1935$^{icg}$
* Hylaeus major (Strand, 1912)$^{icg}$
* Hylaeus makaha $^g$
* Hylaeus malagassus (Benoist, 1945)$^{icg}$
* Hylaeus mana Magnacca & Daly, 2003$^{icg}$
* Hylaeus mapirensis (Schrottky, 1910)$^{icg}$
* Hylaeus margaretae Hirashima & Tadauchi, 1984$^{icg}$
* Hylaeus maritimus Bridwell, 1910$^{icg}$
* Hylaeus matamoko Donovan, 2007$^{icg}$
* Hylaeus matsumurai Bridwell, 1919$^{icg}$
* Hylaeus mauiensis (Perkins, 1899)$^{icg}$
* Hylaeus maximilianus Dathe, 2006$^{icg}$
* Hylaeus medialis Morawitz, 1890$^{icg}$
* Hylaeus mediolucens Cockerell, 1911$^g$
* Hylaeus mediovirens (Cockerell, 1913)$^{icg}$
* Hylaeus megalotis (Swenk & Cockerell, 1910)$^{icg}$
* Hylaeus melaleucae Rayment, 1953$^{icg}$
* Hylaeus melanocephalus (Cockerell, 1922)$^{icg}$
* Hylaeus melanosoma (Cockerell, 1920)$^{icg}$
* Hylaeus melanothrix (Perkins, 1899)$^{icg}$
* Hylaeus melba (Warncke, 1992)$^{icg}$
* Hylaeus mellon Dathe & Proshchalykin$^g$
* Hylaeus meridianus Yasumatsu & Hirashima, 1965$^{icg}$
* Hylaeus meridionalis Förster, 1871$^{icg}$
* Hylaeus meriti Rayment, 1935$^{icg}$
* Hylaeus mesillae (Cockerell, 1896)$^{icgb}$
* Hylaeus mexicanus (Cresson, 1869)$^{ic}$
* Hylaeus microphenax (Cockerell, 1910)$^{icg}$
* Hylaeus microstictus Cockerell, 1942$^{icg}$
* Hylaeus mimicus Magnacca & Daly, 2003$^{icg}$
* Hylaeus mindanensis (Cockerell, 1915)$^{icg}$
* Hylaeus minusculus (Cockerell, 1913)$^{icg}$
* Hylaeus mirandus (Rayment, 1930)$^{icg}$
* Hylaeus modestus Say, 1837$^{icgb}$
* Hylaeus monedulus (Warncke, 1992)$^{icg}$
* Hylaeus mongolicus Morawitz, 1890$^{icg}$
* Hylaeus monilicornis Motschulski, 1863$^{icg}$
* Hylaeus monostictus Cockerell, 1924$^{icg}$
* Hylaeus montacuti (Cockerell, 1942)$^{icg}$
* Hylaeus montanus (Nurse, 1903)$^{icg}$
* Hylaeus monticola Bridwell, 1919$^{icg}$
* Hylaeus montivagus Dathe, 1986$^{icg}$
* Hylaeus moricei (Friese, 1898)$^{icg}$
* Hylaeus multigibbosus Michener, 1965$^{icg}$
* Hylaeus munageus Ikudome, 2004$^{icg}$
* Hylaeus muranus (Warncke, 1970)$^{icg}$
* Hylaeus murihiku Donovan, 2007$^{icg}$
* Hylaeus murrayensis Rayment, 1935$^{icg}$
* Hylaeus murrumbidgeanus Houston, 1981$^{icg}$
* Hylaeus musgravei Cockerell, 1929$^{icg}$
* Hylaeus mustelus (Vachal, 1894)$^{icg}$
* Hylaeus mutatus (Perkins, 1899)$^{icg}$
* Hylaeus nalo Magnacca & Daly, 2003$^{icg}$
* Hylaeus namaquensis Cockerell, 1942$^{icg}$
* Hylaeus nanseiensis Ikudome, 1989$^{icg}$
* Hylaeus nasalis Morawitz, 1876$^{icg}$
* Hylaeus nasutus (Vachal, 1910)$^{icg}$
* Hylaeus neavei Cockerell, 1942$^{icg}$
* Hylaeus nelumbonis (Robertson, 1890)$^{icg}$
* Hylaeus nesoprosopoides Bridwell, 1919$^{icg}$
* Hylaeus nevadensis (Cockerell, 1896)$^{icg}$
* Hylaeus niger Bridwell, 1919$^{icg}$
* Hylaeus nigrescens (Cockerell, 1918)$^{icg}$
* Hylaeus nigricallosus Morawitz, 1890$^{icg}$
* Hylaeus nigricans (Friese, 1913)$^{icg}$
* Hylaeus nigriconcavus (Houston, 1975)$^{icg}$
* Hylaeus nigripennis (Vachal, 1909)$^{icg}$
* Hylaeus nigritus (Fabricius, 1798)$^{icg}$
* Hylaeus niloticus (Warncke, 1970)$^{icg}$
* Hylaeus nimbatus Dathe, 1986$^{icg}$
* Hylaeus nippon Hirashima, 1977$^{icg}$
* Hylaeus nivaliformis Dathe, 1977$^{icg}$
* Hylaeus nivalis (Morawitz, 1867)$^{icg}$
* Hylaeus niveofasciatus (Dours, 1872)$^{icg}$
* Hylaeus nivicola Meade-Waldo, 1923$^{icg}$
* Hylaeus noomen Hirashima, 1977$^{icg}$
* Hylaeus nottoni Dathe, 2014$^g$
* Hylaeus nubilosus (Smith, 1853)$^{icg}$
* Hylaeus nunenmacheri Bridwell, 1919$^{icg}$
* Hylaeus nyassanus (Strand, 1912)$^{icg}$
* Hylaeus nyrocus (Warncke, 1992)$^{icg}$
* Hylaeus oblitus (Warncke, 1970)$^{icg}$
* Hylaeus obtusatus (Smith, 1879)$^{icg}$
* Hylaeus odontophora Strand, 1914$^g$
* Hylaeus oehlkei Dathe, 2010$^g$
* Hylaeus oenanthe (Warncke, 1992)$^{icg}$
* Hylaeus ofarrelli Michener, 1965$^{icg}$
* Hylaeus ogilviei Cockerell, 1936$^{icg}$
* Hylaeus omanicus Dathe, 1995$^{icg}$
* Hylaeus ombrias (Perkins, 1910)$^{icg}$
* Hylaeus opacissimus (Cockerell, 1919)$^{icg}$
* Hylaeus opaciventris (Friese, 1925)$^{icg}$
* Hylaeus orbicus (Vachal, 1910)$^{icg}$
* Hylaeus oresbius Snelling, 1980$^{icg}$
* Hylaeus orientalicus (Warncke, 1981)$^{icg}$
* Hylaeus ornatus Mitchell, 1951$^{icgb}$
* Hylaeus oromialis Dathe, 2014$^g$
* Hylaeus palavanicus (Cockerell, 1915)$^{icg}$
* Hylaeus pallidicornis Morawitz, 1876$^{icg}$
* Hylaeus palmaris (Vachal, 1901)$^{icg}$
* Hylaeus pamelae Dathe, 2014$^g$
* Hylaeus panamensis Michener, 1954$^{icgb}$
* Hylaeus pannosus (Vachal, 1909)$^{icg}$
* Hylaeus pannuceus Snelling, 1980$^{icg}$
* Hylaeus papuanus (Hirashima & Roberts, 1986)$^{icg}$
* Hylaeus paradifformis Ikudome, 1989$^{icg}$
* Hylaeus paradisicola Hirashima & Tadauchi, 1984$^{icg}$
* Hylaeus paradoxicus (Perkins, 1899)$^{icg}$
* Hylaeus paradoxus (Schrottky, 1907)$^{icg}$
* Hylaeus paraguayensis (Schrottky, 1906)$^{icg}$
* Hylaeus parmatus Snelling, 1980$^{icg}$
* Hylaeus paulistanus (Schrottky, 1906)$^{icg}$
* Hylaeus paulus Bridwell, 1919$^{icg}$
* Hylaeus paulyi Dathe, 2014$^g$
* Hylaeus paumako (Magnacca, 2025)
* Hylaeus pectoralis Förster, 1871$^{icg}$
* Hylaeus pele (Perkins, 1911)$^{icg}$
* Hylaeus peltates Snelling, 1980$^{icg}$
* Hylaeus penalaris Dathe, 1979$^{icg}$
* Hylaeus penangensis (Cockerell, 1920)$^{icg}$
* Hylaeus perater Cockerell, 1936$^{icg}$
* Hylaeus perdensus Cockerell, 1936$^{icg}$
* Hylaeus peregrinus Dathe, 1986$^{icg}$
* Hylaeus perforatus (Smith, 1873)$^{icg}$
* Hylaeus pergibbosus Cockerell, 1926$^{icg}$
* Hylaeus perhumilis (Cockerell, 1914)$^{icg}$
* Hylaeus peringueyi (Bridwell, 1919)$^{icg}$
* Hylaeus perkinsianus (Timberlake, 1926)$^{icg}$
* Hylaeus perpictus Rayment, 1935$^{icg}$
* Hylaeus perplexus (Smith, 1854)$^{ic}$
* Hylaeus perrufus Cockerell, 1929$^{icg}$
* Hylaeus personatellus (Cockerell, 1915)$^{icg}$
* Hylaeus perspicuus (Perkins, 1899)$^{icg}$
* Hylaeus peruvianus (Schrottky, 1910)$^{icg}$
* Hylaeus pesenkoi Proshchalykin & Dathe, 2016$^g$
* Hylaeus petroselini (Schrottky, 1906)$^{icg}$
* Hylaeus pfankuchi (Alfken, 1919)$^{icg}$
* Hylaeus phaeoscapus Snelling, 1982$^{icg}$
* Hylaeus philoleucus (Cockerell, 1910)$^{icg}$
* Hylaeus pictipes Nylander, 1852$^{icg}$
* Hylaeus pictulus Michener, 1965$^{icg}$
* Hylaeus pictus (Smith, 1853)$^{icg}$
* Hylaeus pilosulus (Pérez, 1903)$^{icg}$
* Hylaeus pirus Dathe, 1986$^{icg}$
* Hylaeus polifolii (Cockerell, 1901)$^{icgb}$
* Hylaeus polybiaeformis (Schrottky, 1907)$^{icg}$
* Hylaeus polybioides (Schrottky, 1906)$^{icg}$
* Hylaeus pomarinus (Warncke, 1992)$^{icg}$
* Hylaeus porcatus Snelling, 1980$^{icg}$
* Hylaeus potaninii Morawitz, 1890$^{icg}$
* Hylaeus praenotatus Förster, 1871$^{icg}$
* Hylaeus preposterosus Snelling, 1982$^{icg}$
* Hylaeus primulipictus (Cockerell, 1905)$^{icg}$
* Hylaeus probligenatus Houston, 1981$^{icg}$
* Hylaeus procurvus (Rayment, 1939)$^{icg}$
* Hylaeus promontorii Meade-Waldo, 1923$^{icg}$
* Hylaeus proteae Cockerell, 1942$^{icg}$
* Hylaeus proximus (Smith, 1879)$^{icg}$
* Hylaeus przewalskyi Morawitz, 1886$^{icg}$
* Hylaeus psaenythioides Snelling, 1985$^{icg}$
* Hylaeus psammobius (Perkins, 1911)$^{icg}$
* Hylaeus psammophilus (Schrottky, 1906)$^{icg}$
* Hylaeus pubescens (Perkins, 1899)$^{icg}$
* Hylaeus puerulus (Vachal, 1910)$^{icg}$
* Hylaeus pumilus Dathe, 2015$^g$
* Hylaeus punctatus (Brullé, 1832)$^{icgb}$
* Hylaeus punctiferus Cockerell, 1936$^{icg}$
* Hylaeus punctulatissimus Smith, 1842$^{icg}$
* Hylaeus punctus Förster, 1871$^{icg}$
* Hylaeus pyrenaicus Dathe, 2000$^{icg}$
* Hylaeus quadratifer (Cockerell, 1912)$^{icg}$
* Hylaeus quadratus (Smith, 1853)$^{icg}$
* Hylaeus quadriceps (Smith, 1879)$^{icg}$
* Hylaeus quadricornis (Hedicke, 1926)$^{icg}$
* Hylaeus quartinae (Gribodo, 1894)$^{icg}$
* Hylaeus rawi Snelling, 1982$^{icg}$
* Hylaeus recisus (Vachal, 1910)$^{icg}$
* Hylaeus reditus Cockerell, 1936$^{icg}$
* Hylaeus relegatus (Smith, 1876)$^{icg}$
* Hylaeus repentens (Nurse, 1903)$^{icg}$
* Hylaeus rhodesicus (Cockerell, 1942)$^{icg}$
* Hylaeus rhodognathus Cockerell, 1936$^{icg}$
* Hylaeus riekianus Houston, 1981$^{icg}$
* Hylaeus rinki (Gorski, 1852)$^{icg}$
* Hylaeus rivalis (Schrottky, 1906)$^{icg}$
* Hylaeus robertianus (Cameron, 1906)$^{icg}$
* Hylaeus rotensis (Yasumatsu, 1939)$^{icg}$
* Hylaeus rotundiceps (Smith, 1879)$^{icg}$
* Hylaeus royesi Raw, 1984$^{icg}$
* Hylaeus rubicola Saunders, 1850$^{icg}$
* Hylaeus rubrifacialis (Strand, 1912)$^{icg}$
* Hylaeus rubroplagiatus (Cameron, 1905)$^{icg}$
* Hylaeus rudbeckiae (Cockerell & Casad, 1895)$^{icg}$
* Hylaeus ruficeps (Smith, 1853)$^{icg}$
* Hylaeus rufipedoides (Strand, 1911)$^{icg}$
* Hylaeus rufipes (Smith, 1853)$^{ic}$
* Hylaeus rufipictus (Strand, 1912)$^{icg}$
* Hylaeus rufoclypeatus (Friese, 1917)$^{icg}$
* Hylaeus rufulus (Friese, 1908)$^{icg}$
* Hylaeus rugicollis Morawitz, 1873$^{icg}$
* Hylaeus rugipunctus (Alfken, 1914)$^{icg}$
* Hylaeus rugosus (Smith, 1879)$^{icg}$
* Hylaeus rugulosus (Perkins, 1899)$^{icg}$
* Hylaeus saltensis (Friese, 1908)$^{icg}$
* Hylaeus sanctus Cockerell, 1936$^{icg}$
* Hylaeus sandacanensis (Cockerell, 1919)$^{icg}$
* Hylaeus sanguinipictus (Cockerell, 1914)$^{icg}$
* Hylaeus saniculae (Robertson, 1896)$^{icg}$
* Hylaeus sansibaribius (Strand, 1912)$^{icg}$
* Hylaeus sariensis Dathe, 1980$^{icg}$
* Hylaeus satelles (Blackburn, 1886)$^{icg}$
* Hylaeus schwarzii (Cockerell, 1896)$^{icgb}$
* Hylaeus scintillans (Cockerell, 1922)$^{icg}$
* Hylaeus scintilliformis (Cockerell, 1913)$^{icg}$
* Hylaeus scintillus (Cockerell, 1912)$^{icg}$
* Hylaeus scrobicauda (Vachal, 1901)$^{icg}$
* Hylaeus scrupeus (Vachal, 1909)$^{icg}$
* Hylaeus sculptilis (Schrottky, 1910)$^{icg}$
* Hylaeus sculptus (Cockerell, 1911)$^{icg}$
* Hylaeus scutaticornis Michener, 1965$^{icg}$
* Hylaeus scutellaris Morawitz, 1873$^{icg}$
* Hylaeus scutellatus (Spinola, 1838)$^{icg}$
* Hylaeus scutispinus (Alfken, 1914)$^{icg}$
* Hylaeus scutulus (Vachal, 1894)$^{icg}$
* Hylaeus seabrai Urban & Moure, 2002$^{icg}$
* Hylaeus seclusus Cockerell & Sumner, 1931$^{icg}$
* Hylaeus secretus (Nurse, 1903)$^{icg}$
* Hylaeus sedens Snelling, 1980$^{icg}$
* Hylaeus sejunctus Snelling, 1970$^{icg}$
* Hylaeus semicastaneus (Cockerell, 1918)$^{icg}$
* Hylaeus semipersonatus Cockerell, 1929$^{icg}$
* Hylaeus semirufus (Cockerell, 1914)$^{icg}$
* Hylaeus serotinellus (Cockerell, 1906)$^{icg}$
* Hylaeus setosifrons (Perkins, 1899)$^{icg}$
* Hylaeus sibiricus (Strand, 1909)$^{icg}$
* Hylaeus sidensis (Warncke, 1981)$^{icg}$
* Hylaeus signatus (Panzer, 1798)$^{icg}$
* Hylaeus simplex (Perkins, 1899)$^{icg}$
* Hylaeus simplior Meade-Waldo, 1923$^{icg}$
* Hylaeus simplus Houston, 1993$^{icg}$
* Hylaeus simpsoni Cockerell, 1942$^{icg}$
* Hylaeus simulans Cockerell, 1942$^{icg}$
* Hylaeus simus (Vachal, 1895)$^{icg}$
* Hylaeus sinensis Dathe, 2005$^{icg}$
* Hylaeus sinuatus (Schenck, 1853)$^{icg}$
* Hylaeus solaris Magnacca & Daly, 2003$^{icg}$
* Hylaeus sonorensis Cockerell, 1924$^{icg}$
* Hylaeus soror (Pérez, 1903)$^{icg}$
* Hylaeus sparsus (Cresson, 1869)$^{icg}$
* Hylaeus specularis (Perkins, 1899)$^{icg}$
* Hylaeus sphecodoides (Perkins, 1899)$^{icg}$
* Hylaeus spilotus Förster, 1871$^{icg}$
* Hylaeus stenops (Schrottky, 1910)$^{icg}$
* Hylaeus stentoriscapus Dathe, 1986$^{icg}$
* Hylaeus stictifrons (Cockerell, 1936)$^{icg}$
* Hylaeus stilbaspis (Vachal, 1901)$^{icg}$
* Hylaeus strenuus (Cameron, 1897)$^{icg}$
* Hylaeus stubbei Dathe, 1986$^{icg}$
* Hylaeus styriacus Förster, 1871$^{icg}$
* Hylaeus subbutea (Warncke, 1992)$^{icg}$
* Hylaeus subconstrictus (Cockerell, 1922)$^{icg}$
* Hylaeus subcoronatus Rayment, 1935$^{icg}$
* Hylaeus subfortis (Cockerell, 1942)$^{icg}$
* Hylaeus subgriseus (Cockerell, 1918)$^{icg}$
* Hylaeus sublateralis (Cockerell, 1914)$^{icg}$
* Hylaeus sublucens Cockerell, 1936$^{icg}$
* Hylaeus submonticola Ikudome, 1989$^{icg}$
* Hylaeus subplebeius (Cockerell, 1905)$^{icg}$
* Hylaeus subreditus Cockerell, 1942$^{icg}$
* Hylaeus suffusus (Cockerell, 1896)$^{icg}$
* Hylaeus sulphuripes (Gribodo, 1894)$^{icg}$
* Hylaeus taclobanus (Cockerell, 1915)$^{icg}$
* Hylaeus taeniolatus Förster, 1871$^{icg}$
* Hylaeus tagala (Ashmead, 1905)$^{icg}$
* Hylaeus taihorinica Strand, 1914$^g$
* Hylaeus takumiae Magnacca & Daly, 2003$^{icg}$
* Hylaeus tardus (Warncke, 1981)$^{icg}$
* Hylaeus telmenicus Dathe, 1986$^{icg}$
* Hylaeus tenuis (Alfken, 1914)$^{icg}$
* Hylaeus tephronotus (Warncke, 1992)$^{icg}$
* Hylaeus teruelus (Warncke, 1981)$^{icg}$
* Hylaeus tetris Dathe, 2000$^{icg}$
* Hylaeus theodorei (Perkins, 1912)$^{icg}$
* Hylaeus thyreus Snelling, 1980$^{icg}$
* Hylaeus timberlakei Snelling, 1970$^{icg}$
* Hylaeus tinctulus Cockerell, 1932$^{icg}$
* Hylaeus titanius (Friese, 1925)$^{icg}$
* Hylaeus torquatus (Warncke, 1992)$^{icg}$
* Hylaeus transversicostata $^g$
* Hylaeus transversus (Vachal, 1909)$^{icg}$
* Hylaeus transvittatus (Cockerell, 1917)$^{icg}$
* Hylaeus triangulum Fabricius, 1793$^{icg}$
* Hylaeus tricolor (Schrottky, 1906)$^{icg}$
* Hylaeus trifidus (Alfken, 1936)$^{icg}$
* Hylaeus trilobatus (Cockerell, 1910)$^{icg}$
* Hylaeus trimerops (Cockerell, 1916)$^{icg}$
* Hylaeus trinotatus (Pérez, 1895)$^{icg}$
* Hylaeus trisignatus Morawitz, 1876$^{icg}$
* Hylaeus trisulcus (Vachal, 1910)$^{icg}$
* Hylaeus trivittatus (Friese, 1917)$^{icg}$
* Hylaeus tsingtauensis Strand, 1915$^g$
* Hylaeus tuamotuensis Michener, 1965$^{icg}$
* Hylaeus tuertonis (Cockerell, 1906)$^{icg}$
* Hylaeus turgicollaris Michener, 1965$^{icg}$
* Hylaeus tyrolensis Förster, 1871$^{icg}$
* Hylaeus ubertus (Vachal, 1910)$^{icg}$
* Hylaeus uelleburgensis (Strand, 1912)$^{icg}$
* Hylaeus ugandicus (Cockerell, 1939)$^{icg}$
* Hylaeus ulanus Dathe, 1986$^{icg}$
* Hylaeus ulaula $^g$
* Hylaeus umtalicus (Cockerell, 1936)$^{icg}$
* Hylaeus unicus (Perkins, 1899)$^{icg}$
* Hylaeus vachali Meade-Waldo, 1923$^{icg}$
* Hylaeus vachalianus Moure, 1960$^{icg}$
* Hylaeus valinis Dathe, 1986$^{icg}$
* Hylaeus varians Cockerell, 1936$^{icg}$
* Hylaeus variegatus (Fabricius, 1798)$^{icg}$
* Hylaeus variolosus (Smith, 1853)$^{icg}$
* Hylaeus venustus Dathe, 2014$^g$
* Hylaeus versicolor Saunders, 1850$^{icg}$
* Hylaeus verticalis (Cresson, 1869)$^{icgb}$
* Hylaeus vetustus (Nurse, 1903)$^{icg}$
* Hylaeus vigilans (Smith, 1879)$^{ic}$
* Hylaeus villosellus Moure, 1960$^{icg}$
* Hylaeus violaceus (Smith, 1853)$^{icg}$
* Hylaeus vittatifrons (Cockerell, 1913)$^{icg}$
* Hylaeus volatilis (Smith, 1879)$^{icg}$
* Hylaeus volcanicus (Perkins, 1899)$^{icg}$
* Hylaeus volusiensis Mitchell, 1951$^{icg}$
* Hylaeus vulgaris Morawitz, 1876$^{icg}$
* Hylaeus williamsi (Bridwell, 1919)$^{icg}$
* Hylaeus wilsoni (Rayment, 1928)$^{icg}$
* Hylaeus wootoni (Cockerell, 1896)$^{ic}$
* Hylaeus worcesteri (Cockerell, 1919)$^{icg}$
* Hylaeus woyensis Rayment, 1939$^{icg}$
* Hylaeus wynyardensis Cockerell, 1929$^{icg}$
* Hylaeus xanthaspis (Cockerell, 1910)$^{icg}$
* Hylaeus xanthocephalus (Schrottky, 1906)$^{icg}$
* Hylaeus xanthognathus Rayment, 1935$^{icg}$
* Hylaeus xanthopoda (Vachal, 1895)$^{icg}$
* Hylaeus xanthopsyche (Cockerell, 1922)$^{icg}$
* Hylaeus xanthostoma (Alfken, 1914)$^{icg}$
* Hylaeus yaguarae (Schrottky, 1913)$^{icg}$
* Hylaeus yapensis (Yasumatsu, 1942)$^{icg}$
* Hylaeus yasumatsui Snelling, 1970$^{icg}$
* Hylaeus yoruba (Bridwell, 1919)$^{icg}$
* Hylaeus zamoranicus (Cockerell, 1949)$^{icg}$
Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net