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Within the genus Hylaeus subgenus Deranchylaeus, from sub-Saharan Africa, a distinctive new subgroup of species is established. The females of this subgroup share a striking character: the orange-coloured lower face, previously known only in H. xanthostoma. The inter-specific differences are cryptic in both sexes. Seven species are newly described: Hylaeus (Deranchylaeus) aurantiacus sp. nov. ♀♂, H. (D.) burundis sp. nov. ♂, H. (D.) lyriformis sp. nov. ♂, H. (D.) sambiensis sp. nov. ♂, H. (D.) portokalius sp. nov. ♂♀, H. (D.) diastictus sp. nov. ♂ and H. (D.) jemeniticus sp. nov. ♀. This subgroup also includes H. (D.) promontorii (Meade-Waldo, 1923) and H. (D.) venustus Dathe, 2014, whose females are described for the first time. From Cameroon, the male of a second species of the subgenus Pumilaeus is described as new: H. (Pumilaeus) soukontouai sp. nov. New records of species of the genus Hylaeus F. in sub-Saharan Africa are added and a revised identification key to the subgenus Deranchylaeus is presented, to include the new species.

Hylaeus (Prosopis) affinis (Smith, 1853) Counties:Aitkin, Anoka, Becker, Beltrami, Benton, Big Stone, Blue Earth, Brown, Carlton, Carver, Cass, Chippewa, Chisago, Clay, Clearwater, Cottonwood, Dodge, Douglas, Faribault, Fillmore, Freeborn, Goodhue, Grant, Hennepin, Houston, Hubbard, Isanti, Itasca, Jackson, Kandiyohi, Kittson, Lac qui Parle, Lake, Le Sueur, Lincoln, Lyon, Mahnomen, Marshall, Martin, McLeod, Meeker, Morrison, Mower, Murray, Nicollet, Nobles, Norman, Olmsted, Otter Tail, Pennington, Pipestone, Polk, Pope, Ramsey, Red Lake, Redwood, Renville, Rice, Rock, Roseau, Saint Louis, Scott, Sibley, Stearns, Steele, Stevens, Swift, Todd, Traverse, Wabasha, Waseca, Washington, Watonwan, Wilkin, Winona, Wright, Yellow Medicine., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 47, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Metziella) sparsus (Cresson, 1869) Counties: Pine, Red Lake. Comments: Generally rare across its range and known in Minnesota from only two specimens. Material examined: Pine Co.: Chengwatana State Forest (45.8178, -92.7847),: 1 ♀ (MNDNR) 25 Jun 2020, N. Gerjets leg., net, Rubus sp., det. Z. Portman; Red Lake Co.: Plummer: 1 ♀, 19 Jun 1933, D.G. Denning leg., det. J. Gardner and confirmed by Z. Portman. Subgenus Paraprosopis Popov Taxonomy: Snelling (1970)., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on pages 46-47, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569, {"references":["Snelling, R. R. (1970) Studies on North American bees of the genus Hylaeus. 5. The subgenera Hylaeus, S. Str. and Paraprosopis (Hymenoptera: Colletidae). Los Angeles County Museum, Contributions in Science, 180, 1 - 59. https: // doi. org / 10.5962 / p. 241167"]}

Hylaeus (Prosopis) illinoisensis (Robertson, 1896) Counties: Aitkin, Anoka, Brown, Clearwater, Faribault, Hennepin, Houston, Itasca, Kittson, Morrison, Norman, Pine, Polk, Ramsey, Red Lake, Todd, Traverse. Comments: This member of the modestus group requires additional taxonomic investigation to fully delineate the species boundaries. Most recent works have likely lumped this species under “ Hylaeus ‘ modestus group’” (e.g. Lane et al. 2020, 2022). Refer to comments for H. modestus., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 47, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569, {"references":["Lane, I. G., Herron-Sweet, C. R., Portman, Z. M. & Cariveau, D. P. (2020) Floral resource diversity drives bee community diversity in prairie restorations along an agricultural landscape gradient. Journal of Applied Ecology, 57, 2010 - 2018. https: // doi. org / 10.1111 / 1365 - 2664.13694"]}

Hylaeus (Prosopis) modestus Say, 1837 Counties: Aitkin, Anoka, Becker, Big Stone, Blue Earth, Brown, Carlton, Carver, Chippewa, Chisago, Clay, Clearwater, Crow Wing, Dodge, Faribault, Goodhue, Hennepin, Houston, Isanti, Jackson, Kandiyohi, Kittson, Lake of the Woods, Mahnomen, Martin, McLeod, Meeker, Mille Lacs, Morrison, Mower, Nicollet, Norman, Olmsted, Otter Tail, Pennington, Pine, Polk, Pope, Ramsey, Red Lake, Redwood, Renville, Rock, Roseau, Saint Louis, Scott, Sherburne, Sibley, Stearns, Stevens, Swift, Wabasha, Waseca, Washington, Watonwan, Wilkin, Winona, Wright. Comments: Consistent with the findings of Oram (2018) in Canada, what is traditionally known as “ Hylaeus modestus ” is a species complex in Minnesota. As a result, recent collections are referred to as “ Hylaeus ‘ modestus group’” (e.g. Lane et al. 2020, 2022). What we refer to as the “ Hylaeus ‘ modestus group’” likely contains H. modestus, H. illinoisensis, and two unknown or undescribed taxa., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 47, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569, {"references":["Oram, R. J. (2018) Revision of the genus Hylaeus Fabricius (Hymenoptera: Colletidae) in Canada. MSc Thesis, University of Regina, Regina, 165 pp.","Lane, I. G., Herron-Sweet, C. R., Portman, Z. M. & Cariveau, D. P. (2020) Floral resource diversity drives bee community diversity in prairie restorations along an agricultural landscape gradient. Journal of Applied Ecology, 57, 2010 - 2018. https: // doi. org / 10.1111 / 1365 - 2664.13694"]}

Hylaeus (Prosopis) nelumbonis (Robertson, 1890) Counties: Aitkin, Becker, Blue Earth, Clay, Faribault, Freeborn, Grant, Martin, McLeod, Meeker, Redwood, Sibley, Traverse, Watonwan, Wilkin. Comments: What we are calling Hylaeus nelumbonis in Minnesota may in fact be the closely-related species Hylaeus ornatus Mitchell. Additional taxonomic investigation is required., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 47, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Hylaeus) saniculae (Robertson, 1896) Counties: Aitkin, Beltrami, Ramsey, Traverse, Washington, Wright., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Hylaeus) rudbeckiae (Cockerell and Casad, 1895) Counties: Clearwater. Comments: This species is tentatively reported from a single male specimen. There is also a form in the “ mesillae group” that could potentially be H. rudbeckiae. More taxonomic work is needed to clarify this species., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Hylaeus) fedorica (Cockerell, 1909) Counties: Clay, Hennepin, Houston, Norman, Polk, Ramsey, Washington., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Hylaeus) verticalis (Cresson, 1869) Counties: Aitkin, Anoka, Becker, Clay, Clearwater, Cook, Hennepin, Hubbard, Itasca, Lake, Olmsted, Pine, Polk, Ramsey, Rice, Saint Louis, Todd. Subgenus Metziella Michener Taxonomy: Snelling (1968)., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569, {"references":["Snelling, R. R. (1968) Studies on North American bees of the genus Hylaeus. 4. The subgenera Cephalylaeus, Metziella and Hylaeana (Hymenoptera: Colletidae). Los Angeles County Museum, Contributions in Science, 144, 1 - 6. https: // doi. org / 10.5962 / p. 241133"]}

Hylaeus (Hylaeus) annulatus (Linnaeus, 1758) Counties: Aitkin, Beltrami, Clay, Clearwater, Cook, Houston, Isanti, Itasca, Kittson, Lake, Marshall, Pine, Ramsey, Saint Louis, Washington., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Paraprosopis) floridanus (Robertson, 1893) Counties: Becker, Clearwater, Hubbard. Comments: Minnesota represents the northwesternmost edge of the range for this species. Subgenus Prosopis Fabricius, Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 47, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Hylaeus (Hylaeus) mesillae (Cockerell, 1896) Counties: Aitkin, Anoka, Becker, Beltrami, Benton, Big Stone, Brown, Carver, Cass, Chippewa, Chisago, Clay, Clearwater, Cottonwood, Crow Wing, Dodge, Douglas, Faribault, Freeborn, Goodhue, Grant, Hennepin, Houston, Hubbard, Isanti, Itasca, Jackson, Kanabec, Kandiyohi, Kittson, Koochiching, Lac qui Parle, Lake, Lyon, Mahnomen, Marshall, Martin, McLeod, Meeker, Mille Lacs, Morrison, Murray, Nobles, Norman, Olmsted, Otter Tail, Pennington, Pine, Pipestone, Polk, Pope, Ramsey, Red Lake, Redwood, Renville, Rice, Rock, Roseau, Saint Louis, Scott, Sherburne, Stearns, Steele, Stevens, Swift, Traverse, Wabasha, Washington, Watonwan, Wilkin, Winona, Wright, Yellow Medicine. Comments: What has traditionally been called “ Hylaeus mesillae ” or “ Hylaeus mesillae cressoni ” is a species complex containing an estimated three taxa in Minnesota. This complex may include specimens of the similar species H. rudbeckiae, which has the females separated by size alone (Snelling 1970), but the complex does not include H. saniculae, which is morphologically distinct. That H. mesillae is a species complex is consistent with Oram (2018), who also found evidence that H. mesillae is a species complex in Canada containing six distinct DNA barcodes. As a result, most recent collections are referred to as “ Hylaeus ‘ mesillae group’” (e.g. Lane et al. 2020, 2022). These taxonomic issues must be solved by a revision of this species., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569, {"references":["Snelling, R. R. (1970) Studies on North American bees of the genus Hylaeus. 5. The subgenera Hylaeus, S. Str. and Paraprosopis (Hymenoptera: Colletidae). Los Angeles County Museum, Contributions in Science, 180, 1 - 59. https: // doi. org / 10.5962 / p. 241167","Oram, R. J. (2018) Revision of the genus Hylaeus Fabricius (Hymenoptera: Colletidae) in Canada. MSc Thesis, University of Regina, Regina, 165 pp.","Lane, I. G., Herron-Sweet, C. R., Portman, Z. M. & Cariveau, D. P. (2020) Floral resource diversity drives bee community diversity in prairie restorations along an agricultural landscape gradient. Journal of Applied Ecology, 57, 2010 - 2018. https: // doi. org / 10.1111 / 1365 - 2664.13694"]}

Hylaeus (Cephalylaeus) basalis (Smith, 1853) Counties: Becker, Clearwater, Cook, Hubbard, Lake, Red Lake, Sherburne. Subgenus Hylaeus Fabricius s. str. Taxonomy: Snelling (1970)., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 45, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569, {"references":["Snelling, R. R. (1970) Studies on North American bees of the genus Hylaeus. 5. The subgenera Hylaeus, S. Str. and Paraprosopis (Hymenoptera: Colletidae). Los Angeles County Museum, Contributions in Science, 180, 1 - 59. https: // doi. org / 10.5962 / p. 241167"]}

Hylaeus (Hylaeus) leptocephalus (Morawitz, 1871) Counties:Anoka, Benton, Carver, Cass, Clay, Faribault, Freeborn, Hennepin, Jackson, Lyon, Norman, Polk, Ramsey, Rock, Sibley, Stearns. Comments: Non-native. Records of this species in Minnesota go back as far as 1913., Published as part of Portman, Zachary M., Gardner, Joel, Lane, Ian G., Gerjets, Nicole, Petersen, Jessica D., Ascher, John S., Arduser, Mike, Evans, Elaine C., Boyd, Crystal, Thomson, Robin & Cariveau, Daniel P., 2023, A checklist of the bees (Hymenoptera: Apoidea) of Minnesota, pp. 1-95 in Zootaxa 5304 (1) on page 46, DOI: 10.11646/zootaxa.5304.1.1, http://zenodo.org/record/8048569

Masked or yellow-faced bees of the genus Hylaeus (Colletidae) differ in their mode of pollen transportation from most other bees in that they ingest the pollen directly on the flowers and carry it back to the nest inside the crop located in the anterior half of the metasoma. Due to this hidden mode of pollen transportation, the examination of pollen collected by Hylaeus females requires the dissection of the metasoma. Although this method has never been applied in Europe, the great majority of the Central European Hylaeus species were supposed to be pollen generalists based on observations of flower visits. The microscopical analysis of pollen removed from 30 crops each of 36 Central European Hylaeus species revealed that the proportion of species exhibiting an exclusive or strong preference for pollen from a single plant taxon is much higher than hitherto assumed and that the current assumption of the genus Hylaeus to largely consist of pollen generalists is wrong. Nineteen of the 36 species examined are strictly or largely dependent on a single plant taxon for collecting pollen, such as Apiaceae (n = 11 species), Rosaceae (n = 3), Reseda (Resedaceae) (n = 2), Allium (Amaryllidaceae) (n = 1), Asteraceae (n = 1) and Melilotus (Fabaceae) (n = 1). The 36 Hylaeus species examined collected pollen from the flowers of 31 plant families, of which the Apiaceae and Rosaceae (particularly Potentilla and Rubus) were by far the most important contributing almost 60% to the pollen host spectrum of the entire genus. The comparison between pollen host spectrum and flower visiting records showed that the pollen generalists use the flowers of the Asteraceae as nectar rather than pollen sources, corroborating earlier findings that the digestion of Asteraceae pollen requires physiological adaptations to cope with its unfavourable or protective properties. In summary, the patterns of pollen host use by bees of the genus Hylaeus do not substantially differ from those of other Palaearctic bee taxa despite the masked bees’ unusual habit to ingest the pollen directly on the flowers and to transport it inside their body back to the nest.

Hylaeus punctulatissimus SMITH, 1842, Lauch-Maskenbiene N a c h w e i s e: 19. Bez., Sievering, Sieveringer Steinbruch, N 48°15,4 –15,5′, E 16°18,55 –18,65′, 300–340 m SH, F&B-H08, 14. VI.2017, 1♁, ldcHZ; 21. Bez., Stammersdorf, Alte Schanze XI, N 48°19,25′, E 16°25,22′, 221 m SH, F&B-A15, 13.VII.2010, 1♀, ldcHZ; 22. Bez., Lobau, Ölhafen, N 48°10′, E 16°31′, 150 m SH, F&B-S21, 17. VI.2012, 1♀, leg., det. & coll. H. Wiesbauer; 22. Bez., Obere Lobau, Fuchshäufel, Halbtrockenrasen, N 48°11.75′, E 16°28.97′, 156 m SH, F&B-P19, 10.VII.2020, 1♁, ldcEO., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 371, DOI: 10.5281/zenodo.7507600

Hylaeus cornutus CURTIS, 1831, Gehörnte Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,4 –13,6′, E 16°23,4′, 160 m SH, F&B-M13, 27.VII.2016, 3♀♀, ldcHZ & cTLM; 24.VIII.2016, 1♀, 1♁, ldcSS; N 48°13,7′, E 16°23,6′, 165 m SH, F&B-L13, 27.VII.2016, 1♀, ldcHZ, 24.VIII.2016, 1♀, 1♁, 1. IX.2016, 1♀, ldcSS; N 48°13,8′, E 16°23,35′, 164 m SH, F&B-L13, 8.VII.2017, 1♀, ldcSS; N 48°13,7 –13,8′, E 16°23,35 –23,55′, 165 m SH, F&B-L13, 18.V.2017, 3♁♁, 30.V.2017, 1♁, 8.VII.2017, 1♁, 21.VI.2018, 1♁, 7.VI. 2020, 1♁, ldcSS; 12. Bez., ehemaliges Fabriksgelände, N 48°11,03′, E 16°19,53′, 180 m SH, F&B-Q09, 8.VIII.2016, 1♀, lSS, dHZ, cNHMW; 14. Bez., Steinhofgründe, N 48°12,7 –12,9′, E 16°16,3 – 16,7′, 330–340 m SH, F&B-N06, 7.VI.2008, 1♀, ldcHZ; 20. Bez., Bahngelände bei Nordbrücke, N 48°15,2′, E 16°22,5′, 163 m SH, F&B-H05, 25.VI.2020, 1♀, ldcHZ; 21. Bez., Stammersdorf, Brache, N 48°18,86′, E 16°25,03′, 219 m SH, F&B-B15, 26.V.2007, 1♀, 1♁, ldcHZ;22. Bez., Obere Lobau, nahe Vorwerkstrasse, N 48°11,6′, E 16°29,2′, 156 m SH, F&B-P19, 18.VIII.2019, 2♀♀, ldcHZ, 2♀♀, ldcSS, 2.V.2020, 1♀, ldcSS; 22. Bez., Obere Lobau, Franzosenfriedhof, N 48°11,3′, E 16°32,0′, 154 m SH, F&B-Q21, 10.VII.2020, 1♀, ldcHZ; 22. Bez., Süssenbrunn, Umgebung Schöpfleuthner Kapelle, N 48°16,2 –16,4′, E 16°30,3′, 160 m SH, F&B-F20, 1.VIII.2020, 2♀♀, 2♁♁, ldcHZ., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 369, DOI: 10.5281/zenodo.7507600

Hylaeus intermedius FÖRSTER, 1871, Mittlere Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,6 –13,7′, E 16°23,4 –23,6′, 160 m SH, F&B-L13, 3.VIII.2016, 3♁♁, ldcHZ, 4.VIII.2016, 1♀, 9.VIII.2016, 1♀, 24.VIII.2016, 1♀, ldcSS; N 48°13,8′, E 16°23,5′, 163 m SH, F&B-L13, 18.V.2017, 1♁, lSS, dHZ, cSS, 7.VI.2020, 1♁, ldcSS; 2. Bez., Prater, Praterspitz, Wegränder, N 48°10,15′, E 16°29,18′, 155 m SH, F&B-S19, 15.VII.2018, 1♀, ldcSS; 12. Bez., ehemaliges Fabriksgelände, N 48°11,03′, E 16°19,53′, 180 m SH, F&B-Q09, 8.VIII.2016, 2♁♁, lSS, dHZ, cNHMW; 21. Bez., Stammersdorf, Brache E Alte Schanze X, N 48°19,22′, E 16°25,03′, 218 m SH, F&B-A15, 16.VIII.2009, 1♁, lFS & lHZ, dcHZ; 22. Bez., Breitenlee, Schafflerhof, Sandgrube, N 48°14,4′, E 16°32,3′, 155 m SH, F&B-J22, 14.VI.2001, 1♁, ldcHZ; 22. Bez., Obere Lobau, Forstmeistermaiss, N 48°10,9′, E 16°29,6′, 156 m SH, F&B-Q19, 18.VIII.2019, 1♀, ldcHZ; 22. Bez., Obere Lobau, nahe Vorwerkstrasse, N 48°11,6′, E 16°29,2′, 156 m SH, F&B-P19, 18.VIII.2019, 1♀, ldcHZ. 22. Bez., Obere Lobau, E Tischwasser, N 48°11,6′, E 16°29,1′, 154 m SH, F&B-P19, 18.VIII.2019, 1♁, ldcSS., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 370, DOI: 10.5281/zenodo.7507600

Hylaeus duckei (ALFKEN, 1904), Duckes Maskenbiene N a c h w e i s e: 19. Bez., Sievering, Sieveringer Steinbruch, N 48°15,4 –15,5′, E 16°18,55 –18,75′, 300–340 m SH, F&B-H08, 3.VII.1999, 2♀♀, ldcHZ; 22.VI.2001, 1♁, ldcHZ; 26.VI.2001, 1♀, ldcHZ; 14.VI.2017, 1♁, ldcHZ, 4.VII.2020, 4♁♁, 1♀, ldcSS; 17.VI.2022, 1♁, ldcHZ; 23. Bez., Mauer, ohne nähere Angaben, 11.VII.1998, 1♀, ldcHZ., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 370, DOI: 10.5281/zenodo.7507600

Hylaeus cardioscapus COCKERELL, 1924, Herz-Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,8′, E 16°23,35′, 164 m SH, F&B-L13, 9.VIII.2016, 1♀, lFS, dcHZ; 2. Bez., Prater, Au bei Krebsenwasser, N48° 11,57′, E 16°26.88′, 153 m SH, F&B-P16, 22.VII.2017, 1♁, ldcSS; 2. Bez., Prater, Au bei Lusthauswasser, N 48°11,5′, E 016°26,57′, 157 m SH, F&B-P16, 15.VII.2018, 1♀, 19.V.2019, 2♁♁, ldcSS; 22. Bez., Breitenlee, Schafflerhof, Sandgrube, N 48°14,4′, E 16°32,3′, 155 m SH, F&B-J22, 14.VI.2001, 1♀, ldcHZ; 22. Bez., Obere Lobau, Heisslände, N 48°11,6′, E 16°28,7′, 154 m SH, F&B-P18, 13.VI.2013, 1♀, ldcHZ; 22. Bez., Obere Lobau, Panozzalacke, N 48°10,74′, E 16°29,65′, 156 m SH, F&B-Q19, 16.VI.2013, 1♀, ldcHZ; 22. Bez., Obere Lobau, Lager 2, N 48°11,05′, E 16°31,0′, 155 m SH, F&B-Q21, 12.VI.2020, 1♀, ldcHZ., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 369, DOI: 10.5281/zenodo.7507600

Hylaeus styriacus FÖRSTER, 1871, Steirische Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,6 –13,7′, E 16°23,4′, 165 m SH, F&B-L13, 2.VII.2016, 1♁, ldcHZ; N 48°13,55′, E 16°23,6′, 163 m SH, F&B-L13, 2.VII.2016, 1♁, ldSS, cNHMW; N 48°13,8′, E 16°23,5′, 163 m SH, F&B-L13, 15.VI.2017, 1♁, ldcSS; N 48°13,8′, E 16°23,35′, 164 m SH, F&B-L13, 25.VI.2017, 1♀, ldcSS; 2. Bez., Prater, Wiesen bei Bogenschiessplatz, N 48°10,9′, E 016°27,4′, 160 m SH, F&B-Q17, 15.VII.2018, 4♀♀, 1♁, ldcSS; 3. Bez., Botanischer Garten, N 48°11,57′, E 16°23,05′, 185 m SH, F&B-P13, 20.VI.2017, 3♁♁, ldcSS; 13. Bez., Lainzer Tiergarten, Umgebung Hermesvilla, N 48°10,3′, E 16°14,6′, 315 m SH, F&B-R04, 30.VI.2015, 2♁♁, lcdHZ; N 48°10,2′, E 16°14,8′, 300 m SH, F&B-R04, 30.VI.2015, 1♁, lFS, dHZ, cBZL; 13. Bez., Lainzer Tiergarten, Johannser Kogel und Wiese, N 48°11,1′, E 16°13,3′, 300 m SH, F&B-Q03, 15.VI.2017, 1♀, ldcHZ; 16. Bez., Jubiläumswarte, Ruderalfläche W der Warte, N 48°13,3′, E 16°15,9′, 450 m SH, F&B-M05, 22.VII.2007, 1♀, ldcHZ; 19. Bez., zwischen Kahlenberg und Leopoldsberg, N 48°16,8′, E 16°20,4′, 410 m SH, F&B-E10, 9. VI.2014, 1♁, ldcHZ; 19. Bez., Sievering, Sieveringer Steinbruch, N 48°15,4 –15,5′, E 16°18,55 –18,75′, 300– 340 m SH, F&B-H08, 16.VI.2012, 1♁, lFS & lHZ, dcHZ; 21. Bez., Stammersdorf, Alte Schanze X und Umgebung, N 48°19,2′, E 16°25,0′, 223 m SH, F&B-A15, 24.VI.2016, 1♁, lFS & lHZ, dcHZ; 22. Bez., Blumengärten Hirschstetten, N 48°14′, E 16°28′, 159 m SH, F&B-K18, 28.VI.2016, 1♀, 1♁, lFS, dcHZ & cBZL; 22. Bez., Obere Lobau, Plattenmaiss, Randstruktur, N 48°11,43′, E 16°30,4′, 154 m SH, &B-Q21, 9.VII.2020, 11♀♀, 4♁♁, ldcEO, ZF1, Magerwiese, N 48°11,27′, E 16°30,07′, 155 m SH, F&B-Q21, 10.VII.2020, 1♀, ldcEO; 22. Bez., Obere Lobau, Wolfsboden 2B, Randstruktur, N 48°11,25′, E16°31,0′, 153 m SH, F&B-Q20, 8.VII.2020, 5♀♀, 8♁♁, ldcEO, auf Koriander, N 48°11,25′, E16°31,0′, 153 m SH, F&B-Q20, 12.VIII.2020, 1♀, ldcEO; 22. Bez., Obere Lobau, Lager 2, Randstruktur, N 48°11,05′, E 16°31,0′, 153 m SH, F&B-Q21, 9.VII.2020, 2♀♀, 2♁♁, ldcEO; 22. Bez., Obere Lobau, Franzosenfriedhof, auf Koriander, N 48°11,3′, E16°31,9′, 153 m SH, F&B-Q21, 9.VII.2020, 1♀, 1♁, ldcEO; 22. Bez., Obere Lobau, Müllergraben, Brache, N 48°11,5′, E 16°30,73′, 155 m SH, F&B-P20, 8.VII.2020, 1♀, 1♁, ldcEO; 22. Bez., Lobau, Lehnerin S Steinbühelau, N 48°09,8′, E 16°33,1′, 151 m SH, F&B-S21, 22.VI.2013, 2♁♁, lcEO, dHZ; 22. Bez., Untere Lobau, Kreuzgrund, Heisslände, N 48°09,7′, E 16°32,5′, 152 m SH, F& B-T22, 22. VI.2013, 2♁♁, lFS & lHZ, dcHZ; 23. Bez., Mauer, ohne nähere Angaben, 11.VII.1998, 1♁, lcdHZ., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 372, DOI: 10.5281/zenodo.7507600

Hylaeus sinuatus (SCHENCK, 1853), Gebuchtete Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,7 –13,8′, E 16°23,35 –23,55′, 165 m SH, F&B-L13, 15.VI.2017, 3♁♁, ldcSS, 25.VI.2017, 4♁♁, ldcSS, 8.VII.2017, 1♁, ldcSS, 21.VI.2018, 1♁, ldcSS; N 48°13,8′, E 16°23,35′, 164 m SH, F&B-L13, 8.VII.2017, 2♀♀, 1♁, ldcSS; 2. Bez., Prater, Wiesen bei Bogenschiessplatz, N 48°10,9′, E 016°27,4′, 160 m SH, F&B-Q17, 15.VII.2018, 1♁, ldcSS; 13. Bez., Lainzer Tiergarten, Johannser Kogel und Wiese, N 48°11,1′, E 16°13,15 –13,3′, 300 m SH, F&B-Q03, 20.VII.2017, 1♀, ldcHZ; 14. Bez., Hinterhainbach, N 48°14,8′, E 016°13,2′, 380 m SH, F&B-J03, 18.VII.2014, 1♁, lHZ & lFS, dcHZ; 14. Bez., Wolfersberg, N 48°12,6′, E 016°14,8′, 320 m SH, F&B-N04, 23.VII.2016, 2♁♁, lFS, dHZ, cBZL; 16. Bez., Jubiläumswarte, Ruderalfläche W der Warte, N 48°13,3′, E 16°15,9′, 450 m SH, F&B-M05, 22.VII.2007, 1♀, 1♁, ldcHZ; 21. Bez., Jedlesee, Schwarze Lacke, N 48°16,15 –16,5′, E 016°23,1′, 163 m SH, F&B-F13, 24.VI.2016, 2♁♁, lHZ & lFS, dHZ, cHZ & cBZL; 22. Bez., Obere Lobau, Müllergraben, Brache, N 48°11,5′, E 16°30,7′, 155 m SH, F&B-P20, 12.VIII.2020, 1♁, ldcEO; 22. Bez., Obere Lobau, Plattenmaiss, Randstruktur, N 48°11,43′, E 16°30,4′, 154 m SH, F&B-Q21, 9.VII.2020, 1♁, ldcEO; 22. Bez., Obere Lobau, Lager 2, Randstruktur, N 48°11,05′, E 16°31,0′, 153 m SH, F&B-Q21, 9.VII.2020, 1♁, ldcEO., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 371, DOI: 10.5281/zenodo.7507600

Hylaeus sp. " intermedius 2" (sensu SCHODER 2018) N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,8′, E 16°23,35′, 164 m SH, F&B-L13, 9.VIII.2016, 2♁♁, lFS, dcHZ, 15.VI.2017, 1♁, ldcSS; 3. Bez., Botanischer Garten, N 48°11,57′, E 16°23,05′, 185 m SH, F&B-P13, 20.VI.2017, 1♁, ldcSS; 20. Bez., Handelskai, N 48°13,8′, E 16°24,05′, 161 m SH, F&B-L14, 18.VII.2016, 1♁, lFS, dcHZ. A n m e r k u n g: Diese vermutlich noch unbenannte Form unterscheidet sich genetisch (SCHODER 2018) und auch im männlichen Geschlecht deutlich von H. intermedius, wie dieser durch den Holotypus repräsentiert ist. Der stark entwickelte Skapus des Männchens deutet auf eine nahe Verwandtschaft mit H. kahri hin., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on pages 370-371, DOI: 10.5281/zenodo.7507600, {"references":["SCHODER S. (2018): The Hylaeus brevicornis group revisited - an integrative approach to delimit four closely related species of masked bees (Hymenoptera: Apidae). - Master's Thesis, Universitat Wien, 43 pp."]}

Hylaeus nigritus (FABRICIUS, 1798), Rainfarn-Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,6 –13,7′, E 16°23,4′, 165 m SH, F&B-L13, 2.VII.2016, 2♁♁, ldcHZ; 2. Bez., Prater, Wiesen bei Bogenschiessplatz, N 48°10,9′, E 016°27,4′, 160 m SH, F&B-Q17, 15.VII.2018, 1♀, ldcSS; 2. Bez., Prater, Praterspitz, Wegränder, N 48°10,15′, E 16°29,18′, 155 m SH, F&B-S19, 15.VII.2018, 1♀, ldcSS; 11. Bez., Zentralfriedhof, Evangelischer Friedhof, N 48°09,0′, E 16°26,9′, 171 m SH, F&B-U16, 20.VI.2019, 3♀♀, 1♁, lFS & lHZ, dcHZ & cBZL; 19. Bez., Sievering, Hackenberg, N 48°15′, E 16°19′, 270–300 m SH, F&B-J08, 7.VIII.1999, 2♀♀, ldcHZ; 21. Bez., Jedlesee, Schwarze Lacke, N 48°16,15 –16,5′, E 16°23,1′, 163 m SH, F&B-F13, 24.VI.2016, 2♁♁, lSF & lHZ, dcHZ; 23. Bez., Rodaun, Endstelle Strassenbahnlinie 60, N 48°07,9′, E 16°15,75′, 245 m SH, F&B-W05, 29.VI.2001, 2♁♁, ldcHZ., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 371, DOI: 10.5281/zenodo.7507600

Hylaeus moricei (FRIESE, 1898), Röhricht-Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,75′, E 16°23,4′, 163 m SH, F&B-L13, 24.VIII.2016, 1♀, ldcSS; 2. Bez., Prater, Au bei Lusthauswasser, N 48°11,5′, E 016°26,57′, 157 m SH, F&B-P16, 22.VII.2017, 3♀♀, 2♁♁, 11. VI.2018, 2♁♁, 15.VII.2018, 3♁♁, 2♀♀, ldcSS; 9. Bez., Sensengasse, N 48°13,05′, E 16°21,12′, 173 m SH, F&B-M11, 21.VII.2016, 1♀, leg. & coll. J. Lanner,dHZ; 9. Bez., Zoologisches Institut Althanstrasse, N 48°13,8′, E 16°21,5′, 170 m SH, F&B-L11, 9. VI.2017, 1♀, ldcSS, 5.VII.2017, 1♁, ldcSS; 20. Bez., Bahngelände bei Nordbrücke, N 48°15,2′, E 16°22,5′, 163 m SH, F&B-H05, 25. VI.2020, 1♀, ldcHZ; 22. Bez., Breitenlee, Verschiebebahnhof, N 48°15,7′, E 16°29,5′, 150 m SH, F&B-G19, 18. VI.2013, 2♀♀, 1♁, ldcHZ; N 48°15′, E 16°29′, 150 m SH, F&B-H19, 18.VI.2013, 4♀♀, 1♁, ldcHZ., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 371, DOI: 10.5281/zenodo.7507600

Hylaeus imparilis FÖRSTER, 1871, Spitzfleck-Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,6 –13,7′, E 16°23,4′, 165 m SH, F&B-L13, 2.VII.2016, 2♁♁, ldcHZ, 24.VIII.2016, 1♀, 29.VIII.2016, 1♀, ldcSS; N 48°13,7′, E 16°23,6′, 165 m SH, F&B-L13, 25.VIII.2016, 1♀, ldcSS; N 48°13,8′, E 16°23,35′, 164 m SH, F&B-L13, 24.VIII. 2016, 1♀, ldcSS; N 48°13,7 –13,8′, E 16°23,35 –23,55′, 165 m SH, F&B-L13, 18.V.2017, 1♁, ldcSS; 2. Bez., Prater, Wiesen bei Bogenschiessplatz, N 48°10,9′, E 016°27,4′, 160 m SH, F&B-Q17, 2.VII. 2018, 1♁, 15.VII.2018, 1♁, ldcSS., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 370, DOI: 10.5281/zenodo.7507600

Hylaeus incongruus FÖRSTER, 1871, Abweichende Maskenbiene N a c h w e i s e: 2. Bez., Nordbahnhofgelände, N 48°13,7 –13,8′, E 16°23,4′, 165 m SH, F&B-L13, 8.VII.2017, 1♁, ldcHZ; 13. Bez., Lainzer Tiergarten,Wiener Blick, N 48°10,85′, E 16°14,75′, 435 m SH, F&B-Q04, 15.VI.2017, 1♁, lFS, dcHZ; 22. Bez., Alte Donau, Kaiserwasser, N 48°13,9′, E 16°21,1 –21,5′, 160 m SH, F&B-L15, 6.VI.2015, 1♁, ldcHZ; 22. Bez., Obere Lobau, Lager 2, N 48°11,05′, E 16°31,0′, 155 m SH, F&B-Q21, 12.VIII.2019, 1♁, ldcHZ. A n m e r k u n g: Diese Art wurde lange mit Hylaeus gibbus SAUNDERS, 1850 und H. confusus NYLANDER, 1852 vermengt. Eine klare morphologische Unterscheidung ist nach wie vor nur anhand des Genitals der männlichen Tieren möglich., Published as part of Zettel, Herbert, Ockermüller, Esther, Schoder, Sabine & Seyfert, Franz, 2022, Zur Verbreitung der Wildbien en (Hymenoptera, Apidae) in Wien, Österreich, pp. 351-396 in Linzer biologische Beiträge 54 (1) on page 370, DOI: 10.5281/zenodo.7507600

In this study, our aim was to assess several traits of cavity‐nesting Hymenopteran taxa in a low‐intensity agricultural landscape in Transylvania. The study took place between May and August 2018 at eight study sites in the hilly mountainous central part of Romania, where the majority of the landscape is used for extensive farming or forestry. During the processing of the trap nest material, we recorded several traits regarding the nests of different cavity‐nesting Hymenopteran taxa and the spider prey found inside the nests of the spider‐hunting representatives of these taxa. We also evaluated the relationship between the edge density and proportion of low‐intensity agricultural areas surrounding the study sites and some of these traits. The majority of nests were built by the solitary wasp genus Trypoxylon, followed by the solitary wasp taxa Dipogon and Eumeninae. Solitary bees were much less common, with Hylaeus being the most abundant genus. In the nests of Trypoxylon, we mostly found spider prey from the family of Araneidae, followed by specimens from the families of Linyphiidae and Theridiidae. In the nests of Dipogon, we predominantly encountered spider prey from the family of Thomisidae. We found significant effects of low‐intensity agricultural areas for the genera of Auplopus, Megachile, Osmia, and the Thomisid prey of Dipogon. We also found that the spider prey of Trypoxylon was significantly more diverse at study sites with higher proportions of low‐intensity agricultural areas. Our results indicate that solitary bees seem to be more abundant in areas, where the influence of human activities is stronger, while solitary wasps seem to rather avoid these areas. Therefore, we suggest that future studies not only should put more effort into sampling in low‐intensity agricultural landscapes but also focus more on solitary wasp taxa, when sampling such an area., Nowadays, most regions of the European Union face an increasing agricultural intensification and urbanization, which partially caused a dramatic decline of insect diversity in the last few decades. However, even in the European Union, there are still a few regions and areas remaining, which are not under such a strong human influence and still harbor a considerably high insect diversity, like our study area, located in the central part of Romania. In our study, we found several new aspects concerning the diversity and distribution of solitary bees, wasps, and the spider‐hunting wasps' prey and also the effects of landscape context on these groups.

A new species Hylaeus (Paraprospis) guptai Saini & Chandra sp. nov., is described from Jang (Arunachal Pradesh), India. Specimens were collected from flowers of Coriander (Coriandrum sativum L.) du...

Hylaeus anthracinus is an endemic Hawaiian yellow-faced bee (Colletidae) that is federally protected under the Endangered Species Act of 1973. On O‘ahu, H. anthracinus populations are restricted to a few isolated areas of intact coastal strand habitat. A detailed understanding of H. anthracinus nesting ecology is required to protect and expand the remaining fragmented and isolated populations. Here, we explore how nest parameters such as tunnel inside diameter, cell length, cell partition material, and plant species utilization compare among H. anthracinus and three non-native coastal bee species. Solitary bee nests from coastal habitats on O‘ahu, Hawai‘i were dissected and nest parameters were measured, compared, and described. We found overlap in most nest parameters among H. anthracinus and the introduced species: Hylaeus strenuus, Ceratina smaragdula, and Ceratina dentipes. No significant differences for inside diameter of nest entrance, length of tunnel nest, or # of cells/nest were found among the four bee species that were utilizing cavity nests. Thus, competition for nesting resources could be occurring. This increased understanding of H. anthracinus nest ecology will inform future conservation actions that could include the development of captive rearing programs, translocations, use of artificial nest sites, and the enhancement of natural habitat to increase nesting resources to support the existing populations.

A new species of colletid bee, Hylaeus (Hylaeana) dominicalis Gibbs, new species, is described and figured from the Commonwealth of Dominica. The new species can be distinguished from consubgeneric species in the Caribbean Islands based on the integumental coloration, facial fovea, and pubescence. A list of all known Hylaeus from the Caribbean Islands is provided.

A 2009 field survey at Cerro San Cristobal, Santiago, Chile, revealed the presence of Hylaeus (Gnathoprosopis) euxanthus (Cockerell, 1910). Since then, numerous individuals have been observed visiting several plant species around Santiago and Valparaíso. This is the first record of this Australian-native bee in South America.

Hylaeus (Dentigera) imparilis F��rster, 1871 * Distribution: PALAEARCTIC: Mediterranean basin, Europe, Russia (Ascher & Pickering 2021, Kuhlmann et al. 2021). Local distribution fig. 10.3 Material examined. Bekaa: Jdeide, 1000 m, 19.V.1996, 1♀, 1♂, leg. Roche C.G., coll. SEMC; 9.VI.1996, 1♀, leg. Roche C.G.; Hadath, 1610 m, 07.VII.2019, 1♀, leg. Ghisbain G., coll. UMONS. Mount Lebanon: Aley, Ain Es Sayde, 15.VIII.1994, 1♀, 3♂, leg. Roche C.G.; Mansourieh, Al Mountazah, 350 m, 25.VI.1995, 2♀, 1♂, leg. Roche C.G.; 250 m, 26.VI.1996, 1♂, leg. Roche C.G. all coll. SEMC; Souk El Ghareb, Balamand University, 839 m, 23.VII.2019, 1♀, leg. Boustani M., coll MBOU. N. Lebanon: 20 km NE Tripoli, Nahr El Bared, 2.VI.2001, 3♂, Pavett P.M., coll. MPAV; Arz Tannourine, Trail 4, 1786 m, 13.VII.2017, 2♀, 3♂, leg. Boustani M.; Tannourine El Tahta, Wadi Ain El Raha, 1115 m, 19.VIII.2017, 1♀, leg. Boustani M.; Fehta, El Biara, 1632 m, 18.VIII.2018, 1♀, leg. Boustani M., Jabbour J.; Tannourine El Tahta, Mahbase, 936 m, 27.VI.2019, 2♂, leg. Boustani M., all coll. MBOU; Tannourine El Tahta, Mahbase, 926 m, 27.VI.2019, 2♂, leg. Van Achter X.; Hadath El Jebbe, Al Fouar, 1529 m, 25.VII.2019, 1♀, leg. Boustani M., Mouawad G.; Horch Ehden, 1686 m, 31.VII.2019, 1♂, leg. Van Achter X., all coll. XVA. Flower records. Apiaceae: Daucus carota, Eryngium creticum, Eryngium glomeratum; Hypericaceae: Hypericum triquetrifolium, Lamiaceae: Origanum sp., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on pages 14-15, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Dentigera) brevicornis Nylander, 1852 Distribution: PALAEARCTIC (Ascher & Pickering 2021). Mentioned from Lebanon by Ascher & Pickering (2021) and Scheuchl & Willner (2016)., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 118, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018

Hylaeus (Prosopis) maculatus (Alfken, 1904) Distribution: WEST PALAEARCTIC: East Mediterranean to Iran, Algeria (Ascher & Pickering 2021). Mentioned from Lebanon (Ascher & Pickering 2021)., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 118, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018

Hylaeus (Paraprosopis) taeniolatus F��rster, 1871 * Distribution: WEST PALAEARCTIC (Ascher & Pickering 2021, Kuhlmann et al. 2021). Local distribution fig. 10.9 GBIF (2021) SEMC records examined by Dathe H. and included in Material examined below. Material examined. Beirut:Achrafieh, Sioufi Garden, 137 m, 21. VII.2019, 2♂, leg. Boustani M.; 26. VII.2019, 2♂, leg. Boustani M., all coll. MBOU. Mount Lebanon: Mansourieh, Al Mountazah, 250 m, 30.IV.1996, 3♀, 2♂, leg. Roche C.G.; 26.VI.1996, 1♂, leg. Roche C.G.; 350 m, 25.VI.1995, 1♀, 1♂, leg. Roche C.G., all coll. SEMC; Daychounieh, Nahr Beirut Climbing Site, 133 m, 27.IV.2017, 1♂, leg. Boustani M.; Bentael, 337 m, 23.IV.2019, 5♂, leg. Boustani M., all coll. MBOU. N. Lebanon: Bokesmaya, Nahr El Jawz, 250 m, 1.VI.2001, 1♀, 1♂, leg. Pavett P.M., coll. MPAV; Hadath El Jebbe, Chemin Wadi Ain El Raha, 1575 m, 28.VII.2017, 1♀, Boustani M.; Arz Tannourine, 1762 m, 18.VIII.2018, 1♂, leg. Boustani M., Jabbour J.; Hadath El Jebbe, Cedar Forest, 1681 m, 22.VIII.2018, 1♀, 4♂, leg. Boustani M., Jabbour J.; Tannourine El Tahta, Wadi Al Fouar, 1187 m, 22.VIII.2018, 4♂, leg. Boustani M., Jabbour J., all coll. MBOU; Tannourine El Fawka, Salon de l���Eglise, 1244 m, 4.VII.2019, 1♂, leg. Ghisbain G., coll. UMONS. Flower records. Apiaceae: Eryngium glomeratum, Ferulago frigida, Foeniculum vulgare; Lamiaceae: Lamium sp.; Rosaceae: Rubus sanctus; Rutaceae: Ruta chalepensis; Verbenaceae: Duranta erecta., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 18, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Koptogaster) punctulatissimus Smith, 1842 * Distribution: WEST PALAEARCTIC (Ascher & Pickering 2021). Material examined. N. Lebanon: Tannourine El Tahta, Wadi Al Fouar, 1528 m, 17.VI.2016, 1♀, leg. Boustani M., coll. MBOU., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 17, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)"]}

Hylaeus (Dentigera) kahri F��rster, 1871 * Distribution: WEST PALAEARCTIC (Ascher & Pickering 2021, Kuhlmann et al. 2021). Local distribution fig. 10.4 Material examined. Bekaa: Jord Aarsal, Kechek, 2120 m, 11. VII.2019, 1♀, 1♂, leg. Boustani M., coll. MBOU. Mount Lebanon: Aley, Ain Es Sayde, 15. VIII.1994, 1♂, leg. Roche C.G., coll. SEMC. N. Lebanon: Arz Tannourine, Trail 4, 1786 m, 13.VII.2017, 4♂, leg. Boustani M.; Arz Tannourine, Trail 1, 1798 m, 28.VII.2017, 3♀, leg. Boustani M.; Arz Tannourine, Trail 4, 1762 m, 11.VII.2018, 1♂, leg. Boustani M.; Fehta, El Biara, 1632 m, 18.VIII.2018, 1♂, leg. Boustani M., Jabbour J.; Hadath El Jebbe, Border of Cedar Forest, 1681 m, 22.VIII.2018,1 ♂, leg. Boustani M., Jabbour J., all coll. MBOU; Tannourine El Tahta, Mahbase, 926 m, 27.VI.2019, 1♂, leg. Van Achter X., coll. XVA; Arz Tannourine, Gate, 1796 m, 29.VI.2019, 1♀, 1♂, leg. Boustani M.; Arz Bcharre, Forest Limit, 1897 m, 02.VII.2019, 1♂, leg. Boustani M., all coll. MBOU; Arz Tannourine, 1796 m, 04.VII.2019, 1♀, leg. Ghisbain G., coll. UMONS; Arz Tannourine, Gate, 1797 m, 12.VII.2019, 1♀, leg. Van Achter X.; Arz Bcharre, 2042 m, 14.VII.2019, 1♀, leg. Van Achter X.; Arz Tannourine, 1797 m, 14.VII.2019, 2♀, leg. Van Achter X., all coll. XVA; Hadath El Jebbe, Al Fouar, 1529 m, 25.VII.2019, 1♀, leg. Boustani M., Mouawad G., coll. MBOU; Arz Tannourine, 1797 m, 29.VII.2019, 1♂, leg. Van Achter X.; Arz Tannourine, 1797 m, 31.VII.2019, 1♀, leg. Van Achter X., all coll. XVA; Arz Bcharre, Forest Limit, 1873 m, 20.VIII.2019, 1♂, leg. Boustani M.; Arz Tannourine, Gate, 1796 m, 23.VIII.2019, 1♂, leg. Boustani M.; Fehta, El Biara, 1664 m, 23.VIII.2019, 1♀, 1♂, leg. Boustani M., all coll. MBOU. Flower records. Apiaceae: Apium sp., Chaerophyllum aurantiacum, Eryngium billardieri; Eryngium glomeratum; Brassicaceae: Alyssum sp.; Hypericaceae: Hypericum triquetrifolium; Lamiaceae: Origanum sp., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 15, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Hylaeus) angustatus (Schenck, 1859) Distribution: WEST PALAEARCTIC (Ascher & Pickering 2021). Mentioned from Lebanon by Ascher & Pickering (2021) and Scheuchl & Willner (2016)., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 118, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018

Hylaeus (Spatulariella) iranicus Dathe, 1980 * Distribution: EAST MEDITERRANEAN: Turkey, Iran, Lebanon (Ascher & Pickering 2021). Material examined. N. Lebanon: Arz Bcharre, Forest Limit, 1897 m, 02. VII.2019, 1♂, leg. Boustani M.; Bcharre, Dahr El Adib, 2566 m, 24. VII.2019, 1♂, leg. Boustani M.; Harissa, Al Jawar, 1758 m, 23. VIII.2019, 1♀, leg. Boustani M., all coll. MBOU. Flower records. Apiaceae: Eryngium glomeratum; Lamiaceae: Stachys ehrenbergii., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 15, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)"]}

Hylaeus (Hylaeus) crispulus Dathe, 1980 * Distribution: EAST MEDITERRANEAN: Turkey, Iran, Israel, Lebanon (Ascher & Pickering 2021). Material examined. Bekaa: Ainata, 2229 m, 29. VII.2018, 1♂, leg. Boustani M., coll. MBOU. N. Lebanon: Bcharre, Dahr El Adib, 2441 m, 8.VI.2017, 3♂, leg. Boustani M.; Bcharre, Reforestation Area, 2347 m, 27.VI.2017, 2♂, leg. Boustani M.; Bcharre, Qornet Es Sawda, 2911 m, 21.VII.2017, 3♀, 1♂, leg. Boustani M.; Arz tannourine, Trail 4, 1762 m, 5.VII.2018, 1♀, leg. Boustani M.; Bcharre, Plateau Qornet Es Sawda, 2909 m, 12.VII.2018, 1♀, 3♂, leg. Boustani M.; Bcharre, Plateau Qornet Es Sawda, 2882 m, 1.VIII.2018, 1♀, 1♂, leg. Boustani M., all coll. MBOU; Bcharre, Plateau Qornet Es Sawda, 2867 m, 1.VIII.2018, 1♀, leg. Van Achter X., coll. XVA; Bcharre, Dahr El Adib, 2572 m, 25.VIII.2018, 3♀, leg. Boustani M., Jabbour J.; Arz Tannourine, Trail 4, 1781 m, 30.VI.2019, 1♀, leg. Boustani M.; Bcharre, Dahr El Adib, 2566 m, 24.VII.2019, 1♂, leg. Boustani M.; Bcharre, Plateau Qornet Es Sawda, 2882 m, 30.VII.2019, 1♀, leg. Boustani M.; Bcharre, Qornet Es Sawda, 2909 m, 30.VII.2019, 2♀, 3♂, leg. Boustani M.; Bcharre, Dahr El Adib, 2566 m, 20.VIII.2019, 2♀, det. leg. Boustani M., all coll. MBOU. Flower records. Wide range of floral choices. Asphodelaceae: Asphodeline taurica; Asteraceae: Centaurea solstitialis; Cirsium lappaceum; Cousinia libanotica; Euphorbiaceae: Euphorbia macroclada; Fabaceae: Vicia canescens; Lamiaceae: Lamium striatum; Stachys ehrenbergii; Plantaginaceae: Veronica polifolia. Rubiaceae: Asperula taurica., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 14, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)"]}

Hylaeus (Prosopis) meridionalis F��rster, 1871 * Distribution: PALAEARCTIC (Ascher & Pickering 2021, Kuhlmann et al. 2021). Local distribution fig. 10.7 Material examined. Bekaa: Hadath, 1610 m, 7. VII.2019, 1♂, leg. Ghisbain G., coll. UMONS. Mount Lebanon: Laqlouq, Matoube, 1751 m, 6. VII.2019, 1♀, leg. Boustani M., coll. MBOU. N. Lebanon: Qanat, Qornet Dammouaa, 1242 m, 5.VII.2019, 1♀, H. leg. Ghisbain G., coll. UMONS.; Horch Ehden, 1625 m, 14.VII.2019, 2♀, leg. Van Achter X., coll. XVA; Hadath El Jebbe, Cedar Forest, 1646 m, 25.VII.2019, 1♀, leg. Boustani M., coll. MBOU; Jord Tannourine, 2034 m, 27.VII.2019, 1♂, leg. Van Achter X., coll. XVA; Bcharre, Forest of the Cedars of God, 1873 m, 20.VIII.2019, 2♀, 1♂, leg. Boustani M., coll. MBOU. Flower records. Apiaceae: Eryngium billardieri, Eryngium creticum; Lamiaceae: Mentha aquatica, Teucrium orientale., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 16, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Paraprosopis) lineolatus (Schenck, 1861) * Distribution: WEST PALAEARCTIC (Ascher & Pickering 2021, Kuhlmann et al. 2021). Local distribution fig. 10.5 Material examined. Beirut: Achrafieh, Sioufi Garden, 137 m, 21.VI.2019, 1♂, leg. Van Achter X., coll. XVA. Mount Lebanon: Monteverde, 350 m, 22.V.1994, 1♂, leg. Roche C.G.; Monteverde, 350 m, 23.V.1994, 1♀, leg. Roche C.G., all coll. SEMC. Additional 19♀ and 32♂ from 14 records, collected between 15.VIII.1994 and 23.VII.2019, from Aley, Monteverde, Der El Haref, Choueifat, Mansourieh, Jabal Moussa Biospehre Reserve, Bentael, and Souk El Ghareb. N. Lebanon: 20 km NE Tripoli, Nahr El Bared, 2.VI.2001, 2♂,. leg. Pavett P.M.; Horch Ehden Nature Reserve, 1300���1600 m, 13���18.IX.2000, 10♀, leg. Pavett P.M., coll. MPAV.Additional 5♀ and 12♂ from 11 records, collected between 29.V.2001 and 23.VIII.2019, from Horch Ehden Nature Reserve, Arz Tannourine, Tannourine El Tahta, and Hadath El Jebbe. Flower records. Wide range of forage plants. Apiaceae: Eryngium glomeratum, Eryngium creticum, Chaerophyllum aurantiacum, Hippomarathrum sp.; Asteraceae: Carlina curetum ssp. orientalis; Echinops viscosus; Boraginaceae: Echium glomeratum; Caprifoliaceae: Cephalaria setosa; Lamiaceae: Origanum sp.; Plantaginaceae: Anarrhinum orientale, Verbenaceae: Duranta erecta., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on pages 15-16, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Abrupta) cornutus Curtis, 1831 * Distribution: WEST PALAEARCTIC (Ascher & Pickering 2021, Kuhlmann et al. 2021). Material examined. N. Lebanon: Tanourine El Tahta, Mahbaseh, 926 m, 27.VI.2019, 1♀, leg. Van Achter X., coll. XVA. Flower records. Apiaceae: Daucus carota., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 14, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Paraprosopis) styriacus Foerster, 1871 * Distribution: PALAEARCTIC: Southern Europe, Russia (Ascher & Pickering 2021). Material examined. N. Lebanon: Horch Ehden, Nature Reserve, 1300���1600 m, 29.V.2001 ��� 3.VI.2001, 1♀, 1♂, leg. Pavett P.M., coll. MPAV., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 17, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)"]}

Hylaeus (Prosopis) damascenus (Magretti, 1890) * Distribution: WEST PALAEARCTIC: Turkey, Israel, Syria, Iran, Iraq, Lebanon, eastern Europe (Ascher & Pickering 2021, Kuhlmann et al. 2021). Material examined. Mount Lebanon: Mazraat Al Daher, 529 m, 19.VII.2019, 2♀, leg. Boustani M., coll. MBOU. Flower records. Rosaceae: Rubus sanctus., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 14, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}

Hylaeus (Dentigera) rubicola Saunders, 1850 Distribution: WEST PALAEARCTIC: Scattered records from NE Mediterranean, Egypt, Spain (Ascher & Pickering 2021). Mentioned from Lebanon (Ascher & Pickering 2021)., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on page 118, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018

Hylaeus (Dentigera) syriacus (Alfken, 1936) * Distribution: EAST MEDITERRANEAN: Turkey, Jordan, Egypt, Lebanon (Ascher & Pickering 2021). Local distribution fig. 10.8 Material examined. Bekaa: Hadath, 1441 m, 7. VII.2019, 1♀, leg. Ghisbain G., coll. UMONS. Mount Lebanon: Souk El Ghareb, Balamand University, 839 m, 23. VII.2019, 1♂, leg. Van Achter X., coll. XVA. N. Lebanon: Horch Ehden, Nature Reserve, 1300���1600 m, 13���18.IX.2000, 3♀, 5♂, leg. Pavett P.M., coll. MPAV; Tannourine El Tahta, Wadi Al Fouar, 1187 m, 22.VIII.2018, 1♂, leg. Boustani M., Jabbour J.; Arz Tannourine, 1781 m, 23.VIII.2019, 1♂, leg. Boustani M.; Arz Tannourine, 1796 m, 23.VIII.2019, 1♂, leg. Boustani M., all coll. MBOU. Flower records. Apiaceae: Eryngium creticum, Eryngium glomeratum, Foeniculum vulgare., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on pages 17-18, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)"]}

Hylaeus (Prosopis) pictus (Smith, 1853) * Distribution: WEST PALAEARCTIC: Southern Europe, Mediterranean basin and east to Azerbaijan (Ascher & Pickering 2021, Kuhlmann et al. 2021). Material examined. Mount Lebanon: Aley, Ain Es Sayde, 15.VIII.1994, 1♂, leg. Roche C.G.; Mansourieh, Al Mountazah, 11.V.1995, 1♂, leg. Roche C.G.; Mansourieh, Al Mountazah, 250 m, 26.VI.1996, 1♀, leg. Roche C.G., all coll. SEMC., Published as part of Boustani, Mira, Rasmont, Pierre, Dathe, Holger H., Ghisbain, Guillaume, Kasparek, Max, Michez, Denis, M��ller, Andreas, Pauly, Alain, Risch, Stefan, Straka, Jakub, Terzo, Michael, Achter, Xavier Van, Wood, Thomas J. & Nemer, Nabil, 2021, The bees of Lebanon (Hymenoptera: Apoidea: Anthophila), pp. 1-146 in Zootaxa 4976 (1) on pages 16-17, DOI: 10.11646/zootaxa.4976.1.1, http://zenodo.org/record/4819018, {"references":["Ascher, J. S. & Pickering, J. (2021) Discover life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). Available from: http: // www. discoverlife. org / mp / 20 q? guide = Apoidea _ species (accessed 10 September 2020)","Kuhlmann, M., Ascher, J. S., Dathe, H. H., Ebmer, A. W., Hartmann, P., Michez, D., Muller, A., Patiny, S., Pauly, A., Praz, C., Rasmont, P., Risch, S., Scheuchl, E., Schwarz, M., Terzo, M., Williams, P. H., Amiet, F., Baldock, D., Berg, O., Bogusch, P., Calabuig, I., Cederberg, B., Gogala, A., Gusenleitner, F., Josan, Z., Madsen, H. B., Nilsson, A., Odegaard, F., Ortiz- Sanchez, J., Paukkunen, J., Pawlikowski, T., Quaranta, M., Roberts, S. P. M., Saropataki, M., Schwenninger, H. - R., Smit, J., Soderman, G. & Tomozei, B. (2021) Checklist of the Western Palaearctic Bees (Hymenoptera: Apoidea: Anthophila). Available from: http: // westpalbees. myspecies. info (accessed 10 November 2020)"]}