List of Hylaeus species
# 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 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

