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GENUS   Hylaeus

Author: Fabricius, 1793

Type species: Prosopis annulata Fabricius, 1804 = Apis annulata Linnaeus, 1758, by designation of Latreille, 1810
Subgenera: Abrupta Méhelÿ, 1935; Dentigera Popov, 1939; Hylaeus s. str. Fabricius, 1793; Koptogaster Alfken, 1912; Lambdopsis Popov, 1939; Mehelyana Sandhouse, 1943; Nesoprosopis Perkins, 1899; Paraprosopis Popov, 1939; Prosopis Fabricius, 1804; Spatulariella Popov, 1939.
Synonyms: Prosopis
Clade: Anthophila
Family: Colletidae
Subfamily: Hylaeinae
Tribe: Hylaeini
Estimated min and max body length from the genus.
Countries with known records of the genus (based on Nieto et al. 2014)
Estimated difficulty to accurately identify a specimen as belonging to this genus.
Distinctive traits
  •  Small wasp-like hairless bees
  • Most of the time yellow markings on the face.
  • Two submarginal cells
  • Submarginal cell 1 about twice as long as cell 2.  
  • Glossa ('tongue') bifid
  • Face with eyes converging towards the clypeus

Pictures of distinctive traits.
(If you have some and would like to become a contributor to IDmyBee, please contact us.)
Morphologically close genera and how to distinguish them:
Hylaeus is the only small, hairless bee species in Europe with 2 submarginal cells in which submarginal cell 1 is twice as large as submarginal cell 2, and with a bifid tongue.
General comments on Hylaeus species identification
Species identification is complex, based on criteria linked to the light markings but not only. Pilosity, structure of the propodeum, sternites, punctation of the mesosoma are also important. For males, the genitalia carry useful criteria to distinguish some of the species.
SPECIES IDENTIFICATION TOOL
Sorry, but the species identification tool is not yet available for Hylaeus. 
Please check the reference(s) at the bottom of the page for traditional keys.

List of the 86 Hylaeus species found in Europe (UICN 2014 + Rasmont et al. 2017)

Hylaeus (Abrupta) cornutus Curtis, 1831
Hylaeus (Dentigera) biarmicus (Warncke, 1992)
Hylaeus (Dentigera) brachycephalus (Morawitz, 1868)
Hylaeus (Dentigera) breviceps Morawitz, 1876
Hylaeus (Dentigera) brevicornis Nylander, 1852
Hylaeus (Dentigera) glacialis Morawitz, 1872
Hylaeus (Dentigera) gredleri Förster, 1871
Hylaeus (Dentigera) imparilis Förster, 1871
Hylaeus (Dentigera) intermedius Förster, 1871
Hylaeus (Dentigera) kahri Förster, 1871
Hylaeus (Dentigera) penalaris Dathe, 1979
Hylaeus (Dentigera) pilosulus (Pérez, 1903)
Hylaeus (Dentigera) punctus Förster, 1871
Hylaeus (Dentigera) rubicola Saunders, 1850
Hylaeus (Hylaeus) adriaticus (Warncke, 1972)
Hylaeus (Hylaeus) angustatus (Schenck, 1861)
Hylaeus (Hylaeus) annulatus (Linnaeus, 1758)
Hylaeus (Hylaeus) cardioscapus Cockerell, 1924
Hylaeus (Hylaeus) communis Nylander, 1852
Hylaeus (Hylaeus) deceptorius (Benoist, 1959)
Hylaeus (Hylaeus) difformis (Eversmann, 1852)
Hylaeus (Hylaeus) gracilicornis (Morawitz, 1867)
Hylaeus (Hylaeus) hellenicus Dathe, 2000
Hylaeus (Hylaeus) ibericus Dathe, 2000
Hylaeus (Hylaeus) koenigsmanni Dathe, 1981
Hylaeus (Hylaeus) leptocephalus (Morawitz, 1870)
Hylaeus (Hylaeus) mariannae Theunert, 2013
Hylaeus (Hylaeus) moricei (Friese, 1898)
Hylaeus (Hylaeus) nigritus (Fabricius, 1798)
Hylaeus (Hylaeus) nivaliformis Dathe, 1977
Hylaeus (Hylaeus) nivalis (Morawitz, 1867)
Hylaeus (Hylaeus) paulus Bridwell, 1919
Hylaeus (Hylaeus) pyrenaicus Dathe, 2000
Hylaeus (Hylaeus) scutellaris Morawitz, 1873
Hylaeus (Hylaeus) sidensis (Warncke, 1981)
Hylaeus (Hylaeus) trifidus (Alfken, 1936)
Hylaeus (Hylaeus) tyrolensis Förster, 1871
Hylaeus (Koptogaster) bifasciatus ( Jurine, 1807)
Hylaeus (Koptogaster) punctulatissimus Smith, 1842
Hylaeus (Lambdopsis) annularis (Kirby, 1802)
Hylaeus (Lambdopsis) crassanus (Warncke, 1972)
Hylaeus (Lambdopsis) dilatatus (Kirby, 1802)
Hylaeus (Lambdopsis) euryscapus Förster, 1871
Hylaeus (Lambdopsis) pfankuchi (Alfken, 1919)
Hylaeus (Lambdopsis) rinki (Gorski, 1852)
Hylaeus (Lambdopsis) scutellatus (Spinola, 1838)



Hylaeus (Mehelyana) friesei (Alfken, 1904)
Hylaeus (Nesoprosopis) pectoralis Förster, 1871
Hylaeus (Paraprosopis) ater (Saunders, 1903)
Hylaeus (Paraprosopis) azorae (Warncke, 1992)
Hylaeus (Paraprosopis) canariensis Erlandsson, 1983
Hylaeus (Paraprosopis) clypearis (Schenck, 1853)
Hylaeus (Paraprosopis) hohmanni Dathe, 1993
Hylaeus (Paraprosopis) lineolatus (Schenck, 1861)
Hylaeus (Paraprosopis) maderensis (Cockerell, 1921)
Hylaeus (Paraprosopis) pictipes Nylander, 1852
Hylaeus (Paraprosopis) sinuatus (Schenck, 1853)
Hylaeus (Paraprosopis) soror (Pérez, 1903)
Hylaeus (Paraprosopis) styriacus Förster, 1871
Hylaeus (Paraprosopis) taeniolatus Förster, 1871
Hylaeus (Prosopis) absolutus (Gribodo, 1894)
Hylaeus (Prosopis) confusus Nylander, 1852
Hylaeus (Prosopis) convergens Dathe, 2000
Hylaeus (Prosopis) coriaceus (Pérez, 1895)
Hylaeus (Prosopis) duckei (Alfken, 1904)
Hylaeus (Prosopis) garrulus (Warncke, 1981)
Hylaeus (Prosopis) gazagnairei (Vachal, 1891)
Hylaeus (Prosopis) gibbus Saunders, 1850
Hylaeus (Prosopis) incongruus Förster, 1871
Hylaeus (Prosopis) meridionalis Förster, 1871
Hylaeus (Prosopis) pictus (Smith, 1853)
Hylaeus (Prosopis) praenotatus Förster, 1871
Hylaeus (Prosopis) rugicollis Morawitz, 1873
Hylaeus (Prosopis) signatus (Panzer, 1798)
Hylaeus (Prosopis) stigmorhinus (Pérez, 1896)
Hylaeus (Prosopis) teruelus (Warncke, 1981)
Hylaeus (Prosopis) trinotatus (Pérez, 1895)
Hylaeus (Prosopis) variegatus (Fabricius, 1798)
Hylaeus (Spatulariella) alpinus (Morawitz, 1867)
Hylaeus (Spatulariella) cypricola (Warncke, 1972)
Hylaeus (Spatulariella) hyalinatus Smith, 1842
Hylaeus (Spatulariella) hyperpunctatus (Strand, 1909)
Hylaeus (Spatulariella) longimaculus (Alfken, 1936)
Hylaeus (Spatulariella) milossus (Warncke, 1981
Hylaeus (Spatulariella) punctatus (Brullé, 1832)
Hylaeus (Spatulariella) sulphuripes (Gribodo, 1894)
References with identification keys for some of the species:
  • Benoist R., (1957). Les Hyménoptères Apides des Ardennes. I. Les Prosopis. II. Les Colletes. Bulletin de la Sociétéd’Histoire Naturelle des Ardennes 46: 28-29.
  • Dathe, H. H. (1980). Arten der gattung Hylaeus F. in Europa (Hymenoptera: Apoidea, Colletidae). Mitteilungen aus dem Zoologischen Museum in Berlin.
  • Dathe, H.H. Scheuchl E. & Ockermüller E. (2016). Illustrierte Bestimmungstabelle für die Arten der Gattung Hylaeus F. (Maskenbienen) in Deutschland, Österreich und der Schweiz. Entomologica Austriaca Supplement 1. 1-51.
Online resources:
Atlas hymenoptera (Belgium)
BWARS (UK)
Discover Life (World)
WestPalBees (West Palearctic)
Page contributors:
  • Adrien Perrard (Dec. 2019)

You noticed a mistake? You have a suggestion to improve this page?
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References used to write this page:
  • Michener, C.D. 2007. The Bees of the World, 2nd Edition. The John Hopkins University Press, Baltimore.
  • Michez D., Rasmont P., Terzo, M., Vereecken, N. 2019. Abeilles d'Europes. Hymenoptères d'Europes, Volume 1. N.A.P. Editions.
  • Nieto, A., Roberts, S. P., Kemp, J., Rasmont, P., Kuhlmann, M., García Criado, M., ... & Michez, D. 2014. European red list of bees. Luxembourg: Publication Office of the European Union, 98.
  •  Rasmont, P., Devalez, Jelle, Pauly, A., Michez, D. & Radchenko, V.G. 2017. Addition to the checklist of IUCN European wild bees (Hymenoptera: Apoidea). Annales de la Société entomologique de France 53: 17-32.

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