References

1.
Alexander BA, Schwarz M. A catalog of the species of nomada (hymenoptera:apoidea) of the world. University of Kansas Science Bulletin. 1994;55(7):239–70.
2.
Ascher JS, Pickering J. Discover life bee species guide and world checklist (hymenoptera: Apoidea: anthophila). http://www.discoverlife.org/mp/20q?guide=Apoidea_species; 2013.
3.
Ashmead WH. Papers from the harriman alaska expedition. XXVIII. hymenoptera. Proceedings of the Washington Academy of Sciences. 1902;4:117–274.
4.
Ashmead WH. A new paranomia from british columbia. The Canadian Entomologist. 1903;35(9):243.
5.
Baker JR. Taxonomy of five nearctic subgenera of coelioxys (hymenoptera: megachilidae). Vol. 50. University of Kansas Science Bulletin; 1975.
6.
Government of British Columbia. Bees and bee-health in british columbia [Internet]. Government of British Columbia fact sheet; 2019. Available from: https://news.gov.bc.ca/factsheets/bees-and-bee-health-in-british-columbia
7.
Biodiversity galiano lifelist. https://biogaliano.org/taxa/;
8.
Bouseman JK, LaBerge WE. A revision of the genus andrena of the western hemisphere. Part IX. Subgenus melandrena. Transactions of the American Entomological Society. 1978;104:275–389.
9.
Broemeling DK. A revision of the nomada subgenus nomadita of north america. Pan-Pacific Entomologist. 1988;64(4):321–44.
10.
Brooks RW. Systematics and bionomics of anthophora: The bomboides group and species groups of the new world (hymenoptera: Apoidea, anthophoridae). Vol. 98. University of California Publications in Entomology; 1983.
11.
Brooks RW. Systematics and phylogeny of the anthophorine bees (hymenoptera: Anthophoridae; anthophorini). The University of Kansas Science Bulletin. 1988;53(9):436–575.
12.
Brown WJ. The entomological record, 1929. Annual Report of the Entomological Society of Ontario. 1930;60:146–57.
13.
Brown WJ. The entomological record 1931, 1932, 1933. Report of the Quebec Society for the Protection of Plants 1932-1934. 1934;25–26:140–62.
14.
Brumley RL. A revision of the bee genus epeolus latreille of western america north of mexico [Master’s thesis]. Utah State University, Dept. of Zoology, Logan, Utah; 1965. p. 92.
15.
Buckell ER. Records of bees from british columbia: megachilidae. Proceedings of the Entomological Society of British Columbia. 1950;46:21–9.
16.
Buckell ER. Records of bees from british columbia: bombidae. Proceedings of the Entomological Society of British Columbia. 1951;47:7–24.
17.
Buckell ER. Record of bees from british columbia (andrenidae). Proceedings of the Entomological Society of British Columbia. 1949;45:27–30.
18.
Cannings R. Checklist of the bumble bees of british columbia. Boreus. 2011;31(1):19–21.
19.
Cannings RA. The ecozones of british columbia, with special reference to lepidoptera. 2016.
20.
Clausen M. Evaluating field margins for wild bee conservation at the farm-and landscape-scale in the agricultural land reserve of delta, british columbia [PhD thesis]. University of British Columbia; 2017.
21.
Cockerell TDA. The north american bees of the family anthophoridae. Transactions of the American Entomological Society. 1906;32:63–116.
22.
Cockerell TDA. The halictine bees of america. The American Naturalist. 1905;39(458):89–91.
23.
Cockerell TDA. North american bees of the genus nomada. Proceedings of the Academy of Natural Sciences of Philadelphia. 1903;55:580–614.
24.
Cockerell TDA. Notes on some bees in the british museum. Transactions of the American Entomological Society. 1905;31:309–64.
25.
Cockerell TDA. Descriptions and records of bees. XX. The Annals and Magazine of Natural History. 1908;2(8):323–34.
26.
Cockerell TDA. Names applied to the bees of the genus nomada found in north america. Proceedings of the United States National Museum. 1912;41:225–43.
27.
Cockerell TDA. Two bees new to canada. Canadian Entomologist. 1912;44(1):293.
28.
Cockerell TDA. Some parasitic bees (coelioxys). Canadian Entomologist. 1912;44(6):165–70.
29.
Cockerell TDA. Canadian bees in the british museum. Canadian Entomologist. 1912;44(12):354–8.
30.
Cockerell TDA. Two new canadian bees. Canadian Entomologist. 1913;45:12–4.
31.
Cockerell TDA. Names applied to the north american bees of the genera lithurgus, anthidium, and allies. Proceedings of the United States National Museum. 1915;47:86–94.
32.
Cockerell TDA. Some bees in the british museum. Canadian Entomologist. 1916;48(8):272–4.
33.
Cockerell TDA. Records and descriptions of bees LXXII. Annals and Magazine of Natural History. 1916;17:428–35.
34.
Cockerell TDA. The bee-genus halictoides in north america (hym.). Entomological News, and Proceedings of the entomological Section of the Academy of Natural Sciences of Philadelphia. 1916;27:61–3.
35.
Cockerell TDA. Bees in the collection of the california academy of sciences. Proceedings of the California Academy of Science. 1925;14(11):185–215.
36.
Cockerell TDA. Rocky mountain bees. II. American Museum Novitates. 1931;(458):1–20.
37.
Cockerell TDA. A new canadian andrena. Canadian Entomologist. 1932;64(12):285–7.
38.
Cockerell TDA. New records of bees. American Museum Novitates. 1935;(766):1–8.
39.
Cockerell TDA, Sandhouse GA. Parasitic bees (epeolinae and melectinae) in the collection of the california academy of sciences. Proceedings of the California Academy of Science. 1924;13(19):305–24.
40.
Cockerrel TDA. On some panurgine and other bees. Transactions of the American Entomological Society. 1898;25:185–98.
41.
Cockerrel TDA. Bees from northern california. The Pan-Pacific Entomologist. 1936;12(3):133–64.
42.
Cockle JW. Strange action of bombus occidentalis. The Canadian Entomologist. 1913;45(10):347–8.
43.
Corner J. Annual report. Apiculture program, BC department of agriculture. 1963.
44.
Cresson ET. List of the north american species of bombus and apathus. Proceedings of the Entomological Society of Philadelphia. 1863;2:83–116.
45.
Cresson ET. Descriptions of new species of north american bees. Proceedings of the Academy of natural Sciences of Philadelphia. 1878;181–221.
46.
Cresson ET. Synopsis of the families and genera of the hymenoptera of america, north of mexico, together with a catalogue of the described species, and bibliography. Transactions of the American Entomological Society, Suppl Vol. 1887;1–351.
47.
Cresson ET. Catalogue of north american apidae. Transactions of the American Entomological Society and Proceedings of theEntomological Section of the Academy of Natural Sciences. 1878;7:215–32.
48.
Cresson ET. The types of hymenoptera in the academy of natural sciences of philadelphia other than those of ezra townsend cresson. Memoirs of the American Entomological Society; 1928.
49.
Criddle N, Curran CH, Viereck HL, Buckell ER. The entomologcal record, 1923. Annual Report of the Entomological Society of Ontario. 1924;54:87–102.
50.
Criddle N. The entomological record, 1924. Annual Report of the Entomological Society of Ontario. 1925;55:89–106.
51.
Criddle N. The entomological record, 1925. Annual Report of the Entomological Society of Ontario. 1926;56:94–107.
52.
Criddle N. The entomological record, 1926. Annual Report of the Entomological Society of Ontario. 1927;57:47–62.
53.
Dalla Torre CGD. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen x. Apidae (anthophila). Vol. 10. Lipsiae: G. Engelmann; 1896.
54.
Daly HV. Bees of the genus ceratina in america north of mexico (hymenoptera: apoidea). Vol. 74. University of California Publications in Entomology; 1973.
55.
Demarchi D. An introduction to the ecoregions of british columbia [Internet]. 3rd ed. 2011. Available from: https://www2.gov.bc.ca/assets/gov/environment/plants-animals-and-ecosystems/ecosystems/broad-ecosystem/an_introduction_to_the_ecoregions_of_british_columbia.pdf
56.
Donovan BJ. A revision of north american bees of the subgenus cnemidandrena (hymenoptera, andrenidae). Vol. 81. University of California publications in entomology; 1977.
57.
Droege S, Rightmyer MG, Sheffield CS, Brady SG. New synonymies in the bee genus nomada from north america (hymenoptera: apidae). Zootaxa. 2010;2661:1–32.
58.
Dumesh S, Sheffield CS. Bees of the genus dufourea LePeletier (hymenoptera: Halictidae: Rophitinae) of canada. Canadian Journal Arthropod Identification. 2012;(20).
59.
Evans DL. A revision of the subgenus holonomada of the genus nomada. The WAsmann Journal of Biology. 1972;30:1–34.
60.
Fan SL. Socioecological factors affecting plant-pollinator systems in metro vancouver’s butterflyway gardens [Master’s thesis]. University of British Columbia; 2024.
61.
Fletcher J. The entomological record, 1901. Annual Report of the Entomological Society of Ontario. 1902;32:87–101.
62.
Fletcher J, Gibson A. The entomological record, 1906. Annual Report of the Entomological Society of Ontario. 1907;37:113–33.
63.
Fletcher J, Gibson A. The entomological record 1908. Annual Report of the Entomological Society of Ontario. 1908;38:99–116.
64.
Franklin HJ. New north american bombidae. Transactions of the American Entomological Society. 1911;37:157–68.
65.
Franklin HJ. The bombidae of the new world part i. Transactions of the American Entomological Society. 1913;38(3–4):177–482.
66.
Fraser DF, Copley CR, Elle E, Cannings RA. Changes in the status and distribution of the yellow-faced bumble bee (bombus vosnesenskii) in british columbia. J Entomol Soc Brit Columbia. 2012;109:31–7.
67.
Frison TH. Descriptions and records of north american bremidae, together with notes on the synonymy of certain species. Transactions of the American Entomological Society. 1926;52(2):129–45.
68.
Frison TH. Records and descriptions of western bumblebees (bremidae). Proceedings of the California Academy of Sciences. 1927;16(12):365–80.
69.
Frison TH. Additional descriptions, synonymy and records of north america bumblebees. Transactions of the American Entomological Society. 1929;55(2):103–17.
70.
GBIF global biodiversity information facility. https://www.gbif.org/;
71.
Gibbs J, Sheffield CS. Rapid range expansion of the wool-carder bee, anthidium manicatum (linnaeus) (hymenoptera: Megachilidae), in north america. Journal of the Kansas Entomological Society. 2009;82(1):21–9.
72.
Gibbs J. Revision of the metallic species of lasioglossum (dialictus) in canada (hymenoptera, halictidae, halictini). Zootaxa. 2010;2591:1–382.
73.
Gibbs J. Revision of the metallic lasioglossum (dialictus) of eastern north america (hymenoptera: Halictidae: halictini). Zootaxa. 2011;3073:1–216.
74.
Gibbs J, Packer L, Dumesh S, Danforth BN. Revision and reclassification of lasioglossum (evylaeus), l. (Hemihalictus) and l. (Sphecodogastra) in eastern north america. Zootaxa. 2013;3672(1):001–117.
75.
Gibson A. The entomological record, 1910. Annual Report of the Entomological Society of Ontario. 1911;41:101–20.
76.
Gibson A. The entomological record, 1911. Annual Report of the Entomological Society of Ontario. 1912;42:89–112.
77.
Gibson A. The entomological record, 1912. Annual Report of the Entomological Society of Ontario. 1913;43:113–50.
78.
Gibson A. The entomological record, 1913. Annual Report of the Entomological Society of Ontario. 1914;44:106–29.
79.
Gibson A. The entomological record, 1914. Annual Report of the Entomological Society of Ontario. 1915;45:123–50.
80.
Gibson A. The entomological record, 1915. Annual Report of the Entomological Society of Ontario. 1916;46:194–230.
81.
Gibson A. The entomological record, 1916. Annual Report of the Entomological Society of Ontario. 1917;47:137–71.
82.
Gibson A. The entomological record, 1917. Annual Report of the Entomological Society of Ontario. 1918;48:99–127.
83.
Gibson A. The entomological record, 1918. Annual Report of the Entomological Society of Ontario. 1919;49:97–123.
84.
Gibson A, Criddle N. The entomological record, 1919. Annual Report of the Entomological Society of Ontario. 1920;50:112–34.
85.
Gonzalez VH, Griswold TL. A review of the north and central american megachile subgenus argyropile mitchell. Zootaxa. 2007;1461:1–14.
86.
Gonzalez VH, Griswold TL. Wool carder bees of the genus anthidium in the western hemisphere (hymenoptera: Megachilidae): Diversity, host plant associations, phylogeny, and biogeography. The Zoological Journal of the Linnean Society. 2013;168:221–425.
87.
Grigarick AA, Stange LA. The pollen-collecting bees of the anthidiini of california (hymenoptera: megachilidae). Vol. 9. Bulletin of the California Insect Survey; 1968.
88.
89.
Handlirsch A. Die hummelsammlung des k. K. Naturhistorischen hofmuseums. Annalen des Naturhistorischen Museums in Wien. 1888;3:209–50.
90.
Handlirsch A. Hummelstudien. Annalen des Naturhistorischen Museums in Wien. 1891;6:446–54.
91.
Herrich-Schäffer GAW. Auseinandersetzung der europäischen arten einiger bienengattungen. Gattung nomada. Zeitschrift für die Entomologie (Germar). 1839;1(2):267–88.
92.
Hurd PDJr, Michener CD. The megachiline bees of california. (Hymenoptera: megachilidae). Vol. 3. Bulletin of the California Insect Survey; 1955.
93.
Hurd PDJr, LaBerge WE, Linsley EG. Principal sunflower bees of north america with emphasis on the southwestern united states. Vol. 310. Smithsonian Contributions to Zoology; 1980.
94.
Krombein KV. Hymenoptera of america north of mexico. Synoptic catalog. First supplement. Washington, DC: USDA Agricult. Monograph No. 2; 1958.
95.
Krombein KV, Burks BD. Hymenoptera of america north of mexico. Synoptic catalog. Second supplement. Washington, DC: USDA Agricult. Monograph No. 2; 1967.
96.
Krombein KV, Hurd PDJr, Smith DR, Burks BD. Catalog of hymenoptera in america north of mexico. Volume 2. Apocrita (aculeata). Washington: Smithsonian Institution Press; 1979.
97.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part XI. Minor subgenera and subgeneric key. Transactions of the American Entomological Society. 1985;111:441–567.
98.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part XII. Subgenera leucandrena, ptilandrena, scoliandrena and melandrena. Transactions of the American Entomological Society. 1986;112(3):191–248.
99.
LaBerge WE. A revision of the bees of the genus melissodes in north and central america. Part i (hymenoptera, apidae). The University of Kansas Science Bulletin. 1956;37:911–1194.
100.
LaBerge WE. A revision of the bees of the genus melissodes in north and central america. Part II (hymenoptera, apidae). The University of Kansas Science Bulletin. 1956;38:533–78.
101.
LaBerge WE. A revision of the bees of the genus melissodes in north and central america. Part III (hymenoptera, apidae). The University of Kansas Science Bulletin. 1961;42:283–663.
102.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part i. Callandrena. (Hymenoptera: andrenidae). Vol. 7. The University of Kansas Science Bulletin; 1967.
103.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part II. Plastandrena, aporandrena, charitandrena. Transactions of the American Entomological Society. 1969;95:1–47.
104.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part VI. Subgenus trachandrena. Transactions of the American Entomological Society. 1973;99:235–371.
105.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part VIII. Subgenera thysandrena, dasyandrena, psammandrena, rhacandrena, euandrena, oxyandrena. Transactions of the American Entomological Society. 1977;103:1–143.
106.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part x. Subgenus andrena. Transactions of the American Entomological Society. 1980;106:395–525.
107.
LaBerge WE. A revision of the bees of the genus andrena of the western hemisphere. Part XIII. Subgenera simandrena and taeniandrena. Transactions of the American Entomological Society. 1989;115:1–56.
108.
LaBerge WE, Ribble DW. A revision of the bees of the genus andrena of the western hemisphere. Part v. Gonandrena, geissandrena, parandrena, pelicandrena. Transactions of the American Entomological Society. 1972;98:271–358.
109.
LaBerge WE, Ribble DW. A revision of the bees of the genus andrena of the western hemisphere. Part VII. Subgenus euandrena. Transactions of the American Entomological Society. 1975;101:371–446.
110.
LaBerge WE, Bouseman JK. A revision of the bees of the genus andrena of the western hemisphere. Part III. tylandrena. Transactions of the American Entomological Society. 1970;96:543–605.
111.
Leech HB. Anthidiellum robertsoni and its nest. Proceedings of the Entomological Society of British Columbia. 1947;44:39.
112.
Linnaeus C. Systema naturae. Regnum animale. 10th ed. Vol. 1. Holmiae: Salvii; 1758.
113.
Linsley EG. Notes on the synonymy and distribution of some north american bees of the genus bombomelecta (hymenoptera). Entomological News. 1938;49:160–3.
114.
Linsley EG. A revision of the nearctic melectinae (hymenoptera, anthophoridae). Annals of the Entomological Society of America. 1939;32:429–68.
115.
Lutz FE. The geographic distribution of bombidae (hymenoptera), with notes on certain species of boreal america. Bulletin of the American Museum of Natural History. 1916;35:501–21.
116.
MacKenzie KE, Winston ML. Diversity and abundance of native bee pollinators on berry crops and natural vegetation in the lower fraser valley, british columbia. The Canadian Entomologist. 1984;116:965–74.
117.
McGinley RJ. Studies of halictinae (apoidea: Halictidae), i: Revision of new world lasioglossum curtis. Vol. 429. Smithsonian Contributions in Zoolology; 1986.
118.
Metz CW. A revision of the genus prosopis in north america. Transactions of the American Entomological Society. 1911;37:85–156.
119.
Michener CD. American bees of the genus heriades. Annals of the Entomological Society of America. 1938;31:514–31.
120.
Michener CD. The bees of the genera chelostomopsis, formicapis, robertsonella, and prochelostoma (hymen.: megachiolidae). Entomological News. 1938;49:127–32.
121.
Michener CD. A revision of the genus ashmeadiella (hymen., megachilidae). The American Midland Naturalist. 1939;22(1):1–84.
122.
Michener CD. A revision of the american species of the genus hoplitis (hymenoptera, megachilidae). Bulletin of the American Museum of Natural History. 1947;89(4):257–318.
123.
Michener CD. A character analysis of a solitary bee, hoplitis albifrons. Evolution. 1947;1(3):172–85.
124.
Michener CD. Records and descriptions of american megachilid bees (hymenoptera). Journal of the Kansas Entomological Society. 1949;22(2):41–59.
125.
Michener CD. The bees of the world. Baltimore: Johns Hopkins University Press; 2007.
126.
Michener CD, McGinley RJ, Danforth BN. The bee genera of north and central america (hymenoptera: apoidea). Washington: Smithsonian Institution Press; 1994.
127.
Miliczky ER. Observations on the bionomics of the bee andrena (tylandrena) erythrogaster ashmead (hymenoptera:andrenidae) with notes on a.(micrandrena) personata robertson and a. (Holandrena) c. Cressonii robertson. Illinois Natural History Survey Biological Notes; 1988 p. 1–18. Report No.: 130.
128.
Milliron HE. A monograph of the western hemisphere bumblebees (hymenoptera: Apidae; bombinae) i. The genera bombus and megabombus subgenus bombias. Vol. 82. Memoirs of the Entomological Society of Canada; 1971.
129.
Milliron HE. A monograph of the western hemisphere bumblebees (hymenoptera: Apidae; bombinae) II. The genus megabombus subgenus megabombus. Vol. 89. Memoirs of the Entomological Society of Canada; 1973.
130.
Milliron HE. A monograph of the western hemisphere bumblebees (hymenoptera: Apidae; bombinae) III. The genus pyrobombus subgenus cullumanobombus. Vol. 91. Memoirs of the Entomological Society of Canada; 1973.
131.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part i. Classification and descriptions of new species (hymenoptera: megachilidae). Transactions of the American Entomological Society. 1933;59(4):295–361.
132.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part II. Morphology of the male sternites and genital armature and the taxonomy of the subgenera litomegachile, neomegachile and cressoniella (hymenoptera: megachilidae). Transactions of the American Entomological Society. 1935;61(1):1–44.
133.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part III. Taxonomy of subgenera anthemois and delomegachile (hymenoptera: megachilidae). Transactions of the American Entomological Society. 1935;61(3):155–205.
134.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part IV. Taxonomy of subgenera xanthosarus, phaenosarus, megachiloides and derotropis (hymenoptera: megachilidae). Transactions of the American Entomological Society. 1936;62(2):117–66.
135.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part v. Taxonomy of subgenus xeromegachile (hymenoptera: megachilidae). Transactions of the American Entomological Society. 1936;62(4):323–82.
136.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part VI. Taxonomy of subgenera argyropile, leptorachis, pseudocentron, acentron and melanosarus (hymenoptera:megachilidae). Transactions of the American Entomological Society. 1937;63(1):45–83.
137.
Mitchell TB. A revision of the genus megachile in the nearctic region. Part VII. Taxonomy of the subgenus sayapis (hymenoptera: megachilidae). Transactions of the American Entomological Society. 1937;63(2):175–206.
138.
Mitchell TB. Bees of the eastern united states. Volume i. North Carolina Ag. Ex. St. Tech. Bull.; 1960.
139.
Mitchell TB. Bees of the eastern united states. Volume II. North Carolina Ag. Ex. St. Tech. Bull.; 1962.
140.
MOE. Environmental management regions of british columbia. http://www.env.gov.bc.ca/main/regions.html; 2013.
141.
Moure JS, Hurd PD Jr. An annotated catalog of the halictid bees of the western hemisphere (hymenoptera: halictidae). Washington, D.C.: Smithsonian Institution Press; 1987.
142.
Muesebeck CFW, Krombein KV, Townes HK. Hymenoptera of america north of mexico-synoptic catalog. Washington, DC: USDA Agricult. Monograph No. 2; 1951.
143.
Parker F, Griswold T. New species of the cleptoparasitic bee genus stelis (hymenoptera: Megachilidae, anthidiini) from the nearctic region. Zootaxa. 2013;3646(5):529–44.
144.
Provancher L. Additions et corrections au volume II de la faune entomologique du canada. Traitant des hymenopteres. 1888.
145.
Ratti C, Colla S. Discussion of the presence of an eastern bumble bee species (bombus impatiens cresson) in western canada. The Pan-Pacific Entomologist. 2010;86(2):29–31.
146.
Ratti C, Higo H, Griswold T, Winston ML. Bumble bees influence berry size in commercial vaccinium spp. Cultivation in british columbia. The Canadian Entomologist. 2008;140:348–63.
147.
Ribble DW. The monotypic north american subgenus larandrena of andrena (hymenoptera: apoidea). Bulletin of the University of Nebraska State Museum. 1967;6:27–42.
148.
Ribble DW. Revisions of two subgenera of andrena: Micrandrena ashmead and derandrena, new subgenus (hymenoptera: apoidea) [PhD thesis]. The University of Nebraska; 1967. p. 246.
149.
Ribble DW. Revisions of two subgenera of andrena: Micrandrena ashmead and derandrena, new subgenus (hymenoptera: apoidea). Bulletin of the University of Nebraska State Museum. 1968;8:237–394.
150.
Ribble DW. A revision of the bees of the genus andrena of the western hemisphere, subgenus scaphandrena. Transactions of the American Entomological Society. 1974;100:101–89.
151.
152.
Rightmyer MG. A review of the cleptoparasitic bee genus triepeolus (hymenoptera: Apidae). Part i. Zootaxa. 2008;1710:1–170.
153.
Rightmyer MG, Griswold T, Arduser MS. A review of the non-metallic osmia (melanosmia) found in north america, with additional notes on palearctic melanosmia (hymenoptera, megachilidae). ZooKeys. 2010;60:37–77.
154.
Ritsema C. Verslag van de dertiende wintervergadering der nederlandsche entomologische vereeniging. Tijdschrift voor Entomologie. 1880;23:LXXXIV–XCIX.
155.
Roberts RB. Revision of the bee genus agapostemon (hymenoptera: halictidae). The University of Kansas Science Bulletin. 1972;49:437–590.
156.
Roberts RB. Bees of northwestern america: Agapostemon (hymenoptera: halictidae). Technical Bulletin. Oregon State University. Agricultural Experiment Station; 1973.
157.
Roberts RB. Bees of northwestern america: Halictus (hymenoptera: halictidae). Technical Bulletin. Oregon State University. Agricultural Experiment Station; 1973.
158.
Robertson C. Synopsis of nomadinae. The Canadian Entomologist. 1903;35:172–9.
159.
Rodeck HG. North american bees of the genus nomada, subgenus callinomada. Annals of the Entomological Society of America. 1949;42:174–86.
160.
Rozen Jr J. G. Monographic study of the genus nomadopsis ashmead. Vol. 15. University of California Publications in Entomology; 1958.
161.
Rust RW. The systematics and biology of the genus osmia, subgenera osmia, chalcosmia, and cephalosmia. The Wasmann Journal of Biology. 1974;32(1):1–93.
162.
Sandhouse GA. Bees of the genus osmia in the collection of the california academy of sciences. Proceedings of the California Academy of Sciences, 4th Series. 1924;13(22):341–72.
163.
Sandhouse GA. Canadian bees of the genus osmia. Canadian Entomologist. 1925;57(3):33–41, 60–5.
164.
Sandhouse GA. Notes on some north american species of halictus with the description of an apparently new species. Proceedings of the Entomological Society of Washington. 1933;35(5):78–83.
165.
Sandhouse GA. The bees of the genus agapostemon (hymenoptera: Apoidea) occurring in the united states. Journal of the Washington Academy of Sciences. 1936;26(2):70–83.
166.
Sandhouse GA. The north american bees of the genus osmia (hympenoptera: apoidea). Vol. 1. Memoirs of the Entomological Society of Washington; 1939.
167.
Sandhouse GA. The american bees of the subgenus halictus. Entomologica Americana. 1941;21:23–38.
168.
Sarazin MJ. Primary types of aculeata (hymenoptera) in the canadian national collection. Canadian Entomologist. 1986;118:287–318.
169.
Schrader MN, LaBerge WE. The nest biology of the bees andrena (melandrena) regularis malloch and andrena (melandrena) carlini cockerell (hymenoptera: andrenidae). Illinois Natural History Survey Biological Notes. 1976;108:1–24.
170.
Schwarz HF. North american bees of the genus anthidium. American Museum Novitates. 1927;(252):1–22.
171.
Schwarz HF. Additional north american bees of the genus anthidium. American Museum Novitates. 1927;(253):1–17.
172.
Schwarz HF. Anthidiinae mostly collected in canada (hymenop.). Canadian Entomologist. 1928;60:212–7.
173.
Schwarz HF. Anthidiine bees from oregon with a description of a new species. Journal of the New York Entomological Society. 1930;38(1):9–14.
174.
Schwarz HF. A key to the known anthidiine bees of oregon, with description of some new forms. American Museum Novitates. 1940;(1058):1–8.
175.
Scudder GGE. Threatened and endangered invertebrates of the south okanagan. In: Rautio S, editor. Community action for endangered species. Vancouver, B.C.: Federation of B.C. Naturalists & Northwest Preservation Society; 1992. p. 47–57.
176.
Sheffield C. The bees of british columbia (hymenoptera: Apoidea, apiformes) - occurrences dataset. https://doi.org/10.5886/inga8z; Royal Saskatchewan Museum; 2019.
177.
Sheffield C, Heron J. A new western canadian record of epeoloides pilosulus (cresson), with discussion of ecological associations, distribution, and conservation status in canada. Biodiversity Data Journal. 2018;(6).
178.
Sheffield C, Heron J. The bees of british columbia (hymenoptera: Apoidea, apiformes). Journal of the Entomological Society of British Columbia. 2018;115:44–85.
179.
Sheffield C, Ratti C, Packer L, Griswold T. Leafcutter and mason bees of the genus megachile latreille (hymenoptera: Megachilidae) in canada and alaska. Canadian Journal of Arthropod Identification. 2011;(18).
180.
Sladen F. Inquiline bumble-bees in british columbia. Canadian Entomologist. 1915;47:84.
181.
Sladen F. Canadian species of the bee genus stelis panz. Canadian Entomologist. 1916;48(9):312–4.
182.
Sladen F. Notes on the canadian representatives of british species of bees. Canadian Entomologist. 1919;51:124–30.
183.
Smith F. Descriptions of new genera and species of exotic hymenoptera. The Journal of Entomology (London). 1861;1:146–55.
184.
Smith F. Descriptions of new species of hymenoptera in the collection of the british museum. British Museum (Natural History), London; 1879.
185.
Smith F. Catalogue of hymenopterous insects in the collection of the british museum: Part 1: Andrenidae and apidae. 1853.
186.
Smith F. Catalogue of hymenopterous insects in the collection of the british museum: Part 1: Andrenidae and apidae. 1853.
187.
Snelling R. Studies on north american bees of the genus hylaeus. 1. Distribution of the western species of the subgenus prosopis with descriptions of new forms (hymenoptera: colletidae). Contributions in Science, Los Angeles County Museum of Natural History. 1966;(98):1–18.
188.
Snelling R. 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. 1968;(144):1–6.
189.
Snelling R. Studies on north american bees of the genus hylaeus. 5. The subgenera hlylaeus, s.str., and paraprosopis (hymenoptera: colletidae). Los Angeles County Museum Contributions in Science. 1970;(180):1–59.
190.
Snelling R. A review of the native north american bees of the genus chalicodoma. Contributions in Science, Natural History Museum of Los Angeles County. 1990;(421):1–39.
191.
Snelling R, Stage G. A revision of the nearctic melittidae: The subfamily melittinae. Natural History Museum of Los Angeles County, Contributions in Science. 1995;(451):19–31.
192.
Spencer entomological collection, beaty biodiversity museum, UBC. https://www.zoology.ubc.ca/entomology/;
193.
Stephen W. A revision of the bee genus colletes in america north of mexico. University of Kansas Science Bulletin. 1954;36:149–527.
194.
Stephen W. Bumble bees of western america. Agricultural Experiment Station, Oregon State College, Corvallis; 1957 p. 163. Report No.: 40.
195.
Swenk M. I - studies of north american bees. II – family stelididae. University Studies, University of Nebraska. 1914;14(1):1–36.
196.
The ecological framework of canada. http://www.ecozones.ca/;
197.
Thorp R. Systematics and ecology of bees of the subgenus diandrena (hymenoptera: andrenidae). University of California Publications in Entomology. 1969;(52):1–146.
198.
Thorp R, Horning DJ, Dunning L. Bumble bees and cuckoo bumble bees of california. Bulletin of the California Insect Survey. 1983. p. ’i-viii + 1-79’.
199.
Timberlake P. Records of western species of perdita with descriptions of two new species. Pan-Pacific Entomologist. 1929;6:49–56.
200.
Timberlake P. A contribution to the systematics of the north american species of synhalonia. University of California Publications in Entomology. 1969;(57):1–76.
201.
Timberlake P. Supplementary studies on the systematics of the genus perdita (hymenoptera, andrenidae). University of California Publications in Entomology. 1971;(66):1–63.
202.
Timberlake P. The north american species of heterosarus robertson (hymenoptera, apoidea). University of California Publications in Entomology. 1975;(77):1–54.
203.
Timberlake P. Revision of the north american bees of the genus protandrena cockerell (hymenoptera: apoidea). Transactions of the American Entomological Society. 1976;102:133–227.
204.
Titus E. Some new osmiinae of the united states national museum. Proceedings of the Entomological Society of Washington. 1904;6(1):98–102.
205.
Tommasi D, Miro A, Higo H, Winston M. Bee diversity and abundance in an urban setting. The Canadian Entomologist. 2004;136:851–69.
206.
Vachal J. Halictus nouveaux ou presumes nouveaux d’amerique (hymenoptera). Bulletin de la Societe Scientifique, Historique et Archeologique de la Correze. 1904;26:469–86.
207.
Venables. Some observations of hymenoptera of the okanagan. Proceedings of the Entomological Society of British Columbia. 1914;4:61–3.
208.
Viereck H. Synopsis of the bees of oregon, washington, british columbia, and vancouver. Canadian Entomologist. 1904;36:93–100.
209.
Viereck H. Synopsis of the bees of oregon, washington, british columbia, and vancouver II. Canadian Entomologist. 1904;36:157–61.
210.
Viereck H. Synopsis of the bees of oregon, washington, british columbia, and vancouver III. Canadian Entomologist. 1904;36:’189–196, 221–232’.
211.
Viereck H. Synopsis of the bees of oregon, washington, british columbia, and vancouver IV. Canadian Entomologist. 1905;37:’277–287, 313–321’.
212.
Viereck H. Synopsis of the bees of oregon, washington, british columbia, and vancouver v. Canadian Entomologist. 1906;38:297–304.
213.
Viereck H. New species of north american bees of the genus andrena from west of the 100th meridian contained in the collections of the academy of natural sciences of philadelphia. Proceedings of the Academy of Natural Sciences of Philadelphia. 1916;68:550–608.
214.
Viereck H. New species of north american bees of the genus andrena (contained in the collection of the collections of the academy of natural sciences of philadelphia). Transactions of the American Entomological Society. 1917;43:365–407.
215.
Viereck H. Descriptions of two canadian bees of the genus melecta. Canadian Entomologist. 1924;56(1):15–5.
216.
Viereck H. Prodromus of andrena, a genus of bees. Canadian Entomologist. 1924;56(4):’19–24, 28–32, 76–81, 237–244’.
217.
White J. A revision of the genus osmia, subgenus acanthosmioides (hymenoptera, megachilidae). University of Kansas Science Bulletin. 1952;35(1):219–307.