List of Bees of Colorado
Browse the list by family using the links below or use your browser's search function to find a particular taxon. You may wish to search for synonyms as well.
Names marked with an asterisk (*) are dubious records that need further investigation. This is a preliminary draft with known errors. Do not use as an authoritative list. Updates to follow. Last revised July 31, 2006.
Colletidae | Andrenidae | Halictidae
Melittidae | Megachilidae | Apidae
- Colletidae - 85 species/subspecies
- Colletinae
-
- Colletes 64 species/subspecies
-
- aberrans Cockerell 1897
- albescens Cresson 1868
- algarobiae Cockerell 1900
- americanus Cresson 1868
- andrewsi Cockerell 1906
- annae annae Cockerell 1897
- aridus Stephen 1954 *
- birkmanni Swenk 1906
- brevicornis Robertson 1897
- bryanti Timberlake 1951 *
- bulbotibialis Stephen 1954 *
- cercidii Timberlake 1951 *
- chamaesarachae Cockerell 1897 *
- ciliatoides Stephen 1954 *
- ciliatus Patton 1879
- clypeonitens Swenk 1906
- compactus compactus Cresson 1868
- compactus hesperius Swenk 1906
- consors consors Cresson 1868
- consors pascoensis Cockerell 1898 *
- daleae Cockerell 1897
- delodontus Viereck 1903 *
- eulophi Robertson 1891
- fulgidus fulgidus Swenk 1904
- gilensis Cockerell 1897
- gypsicolens Cockerell 1897
- hyalinus hyalinus Provancher 1888
- inaequalis Say 1837
- intermixtus Swenk 1905
- kansensis Stephen 1954 *
- kincaidii Cockerell 1898
- laticinctus Timberlake 1951
- latitarsis Robertson 1891
- louisae Cockerell 1897 *
- lutzi lutzi Timberlake 1943
- mandibularis Smith 1853
- metzi Timberlake 1951
- micheneri Stephen 1954 *
- nigrifrons Titus 1900
- nudus Robertson 1898
- paniscus paniscus Viereck 1903
- paniscus sculleni Timberlake 1951 *
- petalostemonis Swenk 1906
- phaceliae Cockerell 1906
- robertsonii Dalla Torre 1896
- rufocinctus Cockerell 1929
- salicicola Cockerell 1897
- simulans armatus Patton 1879
- simulans nevadensis Swenk 1908 *
- simulans simulans Cresson 1868
- skinneri Viereck 1903 *
- slevini Cockerell 1925
- solidaginis Swenk 1906 *
- sphaeralceae Timberlake 1951 *
- susannae Swenk 1925
- swenki Stephen 1954 *
- texanus Cresson 1872 *
- timberlakei Stephen 1954
- trigonatus Cockerell 1933
- wickhami Timberlake 1943
- willistoni Robertson 1891
- wilmattae Cockerell 1904
- wootoni Cockerell 1897
- xerophilus sonoranus Timberlake 1951 *
-
- Colletes 64 species/subspecies
-
- Diphaglossinae
- Caupolicanini
- Caupolicana 2 species/subspecies
- (Caupolicana s. str.)
- ocellata Michener 1966
- yarrowi Cresson 1875
- (Caupolicana s. str.)
- Caupolicana 2 species/subspecies
- Caupolicanini
- Hylaeinae
-
- Hylaeus 19 species/subspecies
- (Cephalylaeus)
- basalis Smith 1853
- (Hylaeus s. str.)
- bisinuatus Forster 1871
- conspicuus Metz 1911
- ellipticus Kirby 1837
- granulatus Metz 1911 *
- mesillae cressoni Cockerell 1907
- mesillae mesillae Cockerell 1896
- rudbeckiae Cockerell and Casad 1895
- verticalis Cresson 1869
- (Paraprosopis)
- coloradensis Cockerell 1896
- megalotis Swenk and Cockerell 1910
- personatellus Cockerell 1915
- seclusus Cockerell and Sumner 1931
- wootoni Cockerell 1896
- (Prosopis)
- affinis Smith 1853
- episcopalis coquilletti Cockerell 1896
- episcopalis episcopalis Cockerell 1896
- modestus citrinifrons Cockerell 1896
- (unassigned)
- tuertonis Cockerell 1906
- (Cephalylaeus)
- Hylaeus 19 species/subspecies
-
- Colletinae
- Andrenidae - 284 species/subspecies
- Andreninae
-
- Andrena 165 species/subspecies
- (Andrena s. str.)
- birtwelli Cockerell 1901
- buckelli Viereck 1924
- ceanothifloris cretata LaBerge 1980
- clarkella Kirby 1802
- durangoensis Viereck and Cockerell 1914
- edwardsi Viereck 1916 *
- frigida Smith 1853
- laminibucca Viereck and Cockerell 1914
- lanhami LaBerge 1980
- macoupinensis Robertson 1900
- mandibularis Robertson 1892
- milwaukeensis Graenicher 1903
- perarmata Cockerell 1898
- rufosignata Cockerell 1902
- schuhi LaBerge 1980 *
- thaspii Graenicher 1903
- topazana Cockerell 1906
- vicinoides Viereck 1904
- (Belandrena)
- sphaeralceae Linsley 1939
- (Callandrena)
- accepta Viereck 1916
- aridis LaBerge 1967
- berkeleyi Viereck and Cockerell 1914
- biscutellata Viereck 1917
- gardineri Cockerell 1906
- haynesi Viereck and Cockerell 1914
- helianthi Robertson 1891
- helianthiformis Viereck and Cockerell 1914
- irrasus LaBerge 1967
- melliventris Cresson 1872 *
- pecosana Cockerell 1913
- rudbeckiae Robertson 1891
- simulata Smith 1879
- tonkaworum Viereck 1917
- utahensis LaBerge 1967
- vulpicolor Cockerell 1897
- (Cnemidandrena)
- apacheorum Cockerell 1897
- canadensis Dalla Torre 1896
- chromotricha Cockerell 1899
- colletina Cockerell 1906
- columbiana Viereck 1917
- costillensis Viereck and Cockerell 1914
- hirticincta Provancher 1888
- mentzeliae Cockerell 1897
- nubecula Smith 1853
- ramaleyi Cockerell 1931
- robervalensis Mitchell 1960
- scutellinitens Viereck 1916
- sulcata Donovan 1977 *
- surda Cockerell 1910
- xanthigera Cockerell 1900
- (Conandrena)
- bradleyi Viereck 1907
- cheyennorum Viereck and Cockerell 1914
- (Dactylandrena)
- berberidis Cockerell 1905
- porterae Cockerell 1900
- (Dasyandrena)
- cristata Viereck 1917
- (Diandrena)
- ablegata Cockerell 1922
- evoluta Linsley and MacSwain 1961
- nothocalaidis Cockerell 1905
- subchalybea Viereck 1916
- (Euandrena)
- algida Smith 1853
- algida Smith 1853
- astragali Viereck and Cockerell 1914
- auricoma Smith 1879
- geranii Robertson 1891
- lawrencei Viereck and Cockerell 1914
- nigrihirta Ashmead 1890
- nigrocaerulea Cockerell 1897
- segregans Cockerell 1900
- (Genyandrena)
- mackieae Cockerell 1937
- (Gonandrena)
- persimulata Viereck 1917
- (Holandrena)
- cressonii cressonii Robertson 1891
- cressonii infasciata Lanham 1949
- cressonii kansensis Cockerell 1899
- moquiorum Viereck and Cockerell 1914
- (Iomelissa)
- violae Robertson 1891
- (Larandrena)
- miserabilis Cresson 1872
- (Leucandrena)
- barbilabris Kirby 1802
- monilicornis Cockerell 1896
- (Melandrena)
- barbara Bouseman and LaBerge 1978
- carlini Cockerell 1901
- cerasifolii Cockerell 1896
- commoda Smith 1879
- lupinorum Cockerell 1906
- nivalis Smith 1853
- pertristis carliniformis Viereck and Cockerell 1914
- platyrhina Cockerell 1930
- sola Viereck 1916
- transnigra Viereck 1904
- vicina Smith 1853
- (Micrandrena)
- candidiformis Viereck and Cockerell 1914
- illinoiensis Robertson 1891
- kristina Lanham 1983
- melanochroa Cockerell 1898
- microchlora Cockerell 1922
- nigrae Robertson 1905
- piperi Viereck 1904
- robinsoni Lanham 1987
- salictaria Robertson 1905
- ziziae Robertson 1891
- (Notandrena)
- nothoscordi Robertson 1897
- (Onagrandrena)
- anograe anograe Cockerell 1901
- blaisdelli Cockerell 1924
- (Parandrena)
- andrenoides Cresson 1878
- wellesleyana Robertson 1897
- (Plastandrena)
- argemonis Cockerell 1896
- crataegi Robertson 1893
- prunorum prunorum Cockerell 1896
- (Ptilandrena)
- distans Provancher 1888
- pallidiscopa pallidiscopa Viereck 1904
- (Rhacandrena)
- brevipalpis Cockerell 1930
- coruscata LaBerge 1977
- cragini Cockerell 1899
- robertsonii Dalla Torre 1896
- (Rhaphandrena)
- prima Casad 1896
- (Scaphandrena)
- bruneri Viereck and Cockerell 1914
- capricornis Casad and Cockerell 1896
- hicksi Cockerell 1925
- merriami Cockerell 1901
- nigerrima Casad 1896
- primulifrons Casad 1896
- scurra Viereck 1904
- sladeni Viereck 1924
- vestali Cockerell 1913
- walleyi Cockerell 1932
- (Scrapteropsis)
- alleghaniensis Viereck 1907
- imitatrix Cresson 1872
- (Simandrena)
- angustitarsata Viereck 1904
- nasonii Robertson 1895
- pallidifovea Viereck 1904
- wheeleri Graenicher 1904
- runcinatae Cockerell 1906
- (Thysandrena)
- bisalicis Viereck 1908 *
- candida Smith 1879
- livida LaBerge 1977
- medionitens Cockerell 1902
- trizonata Ashmead 1890
- vierecki Cockerell 1904
- w-scripta Viereck 1904
- (Trachandrena)
- amphibola Viereck 1904
- ceanothi Viereck 1917
- cleodora cleodora Viereck 1904
- cupreotincta Cockerell 1901
- cyanophila Cockerell 1906
- forbesii Robertson 1891
- hippotes Robertson 1895
- mariae Robertson 1891
- miranda Smith 1879
- nuda Robertson 1891
- quintilis Robertson 1898
- salicifloris Cockerell 1897
- semipunctata Cockerell 1902
- sigmundi Cockerell 1902
- striatifrons Cockerell 1897
- (Tylandrena)
- erythrogaster Ashmead 1890
- hallii Dunning 1898
- mesillae Cockerell 1896
- oreobati Morice and Cockerell
- perplexa Smith 1853
- subaustralis Cockerell 1898
- subtilis Smith 1879
- wilmattae Cockerell 1906
- (unassigned)
- antonitonis Viereck 1914
- casadae Cockerell 1896
- paduocorum Viereck and Cockerell 1914
- purpurina Viereck and Cockerell 1914
- scotoptera Cockerell 1934
- (Andrena s. str.)
- Andrena 165 species/subspecies
-
- Panurginae
- Protandrenini
- Protandrena 26 species/subspecies
- (Heterosarus)
- bakeri Cockerell 1896
- dawsoni Timberlake 1964
- flavotinctus Cockerell 1898
- parvus Robertson 1892
- (Protandrena s. str.)
- bancrofti Dunning 1897
- bancrofti Dunning 1897
- cockerelli Dunning 1897
- mexicanorum Cockerell 1896
- (Pterosarus)
- albitarsis Cresson 1872
- altissimus Cockerell 1922
- andrenoides Smith 1853
- atricornis Cresson 1878
- barberi Cockerell 1899 *
- boylei Cockerell 1896
- citripes Ashmead 1890
- didirupa Cockerell 1908
- innuptus Cockerell 1896
- irregularis Cockerell 1922
- leucopterus Cockerell 1923
- lutzae Cockerell 1922
- nebrascensis nebrascensis Crawford 1903
- ornatipes Cresson 1872
- perlaevis Cockerell 1896
- piercei piercei Crawford 1903
- porterae Cockerell 1900
- pulchricornis Cockerell 1922
- renimaculatus Cockerell 1896
- (Heterosarus)
- Pseudopanurgus 2 species/subspecies
-
- aethiops Cresson 1872
- fraterculus timberlakei Cockerell 1931
-
- Protandrena 26 species/subspecies
- Panurgini
- Panurginus 3 species/subspecies
-
- beardsleyi Cockerell 1904
- cressoniellus Cockerell 1898
- ineptus Cockerell 1922
-
- Panurginus 3 species/subspecies
- Perditini
- Macrotera 1 species/subspecies
- (Cockerellula)
- opuntiae Cockerell 1922
- (Cockerellula)
- Perdita 72 species/subspecies
- (Cockerellia)
- albipennis albipennis Cresson 1868
- albipennis canadensis Crawford 1912 *
- albipennis heliophila Cockerell 1916
- coreopsidis kansensis Timberlake 1953
- imbellis Timberlake 1968
- lepachidis lepachidis Cockerell 1896
- lingualis Cockerell 1896
- utahensis Cockerell 1896
- (Epimacrotera)
- ainsliei Crawford 1932
- (Hexaperdita)
- cambarella platyura Cockerell 1922
- ignota crawfordi Cockerell 1901
- ignota ignota Cockerell 1896
- xanthismae Cockerell 1905
- (Perdita s. str.)
- affinis Cresson 1878
- apacheorum Timberlake 1960
- bigeloviae Cockerell 1896
- brevihirta Timberlake 1962
- bruneri Cockerell 1897
- calloleuca calloleuca Cockerell 1922
- cognata Timberlake 1960 *
- croceipes Timberlake 1960
- crotonis dilucida Timberlake 1960 *
- crotonis perpicta Timberlake 1968
- dolichocephala Swenk and Cockerell 1907
- dubia dubia Cockerell 1896
- dubia parilis Timberlake 1958
- exclamans Cockerell 1895 *
- fallax Cockerell 1896
- florissantella Cockerell 1906
- gutierreziae Cockerell 1896
- halictoides Smith 1853
- holoxantha Timberlake 1962
- kiowi Griswold 1988
- labergei Timberlake 1960
- lasiogastra Timberlake 1929
- laticincta Swenk and Cockerell 1907
- levigata Timberlake 1968
- luteiceps Cockerell 1896
- luteola Cockerell 1894
- maculigera bilineata Timberlake 1929
- melanostoma melanostoma Swenk and Cockerell 1907
- mentzeliae Cockerell 1896
- nigroclypeata Timberlake 1964
- nuda Cockerell 1896
- ordinata Timberlake 1962
- perpallida perpallida Cockerell 1901
- phymatae Cockerell 1895
- rectangulata Cockerell 1896
- reperta Timberlake 1968
- rhodura Cockerell 1897
- salicis coloradana Timberlake 1929
- salicis imperialis Cockerell 1925
- salicis salicis Cockerell 1896
- salicis subtristis Cockerell 1933
- sejuncta Timberlake 1968
- sexmaculata sexmaculata Cockerell 1895
- similis similis Timberlake 1958
- snowii Cockerell 1896
- solidaginis Cockerell 1922
- stottleri Cockerell 1896
- subfasciata Cockerell 1897
- subvestita Timberlake 1968
- tortifoliae tortifoliae Cockerell 1906
- tridentata Stevens 1919
- wilmattae miricornis Cockerell 1922
- wilmattae wilmattae Cockerell 1906
- wootonae Cockerell 1898
- xanthochroa Timberlake 1960
- zebrata flavens Timberlake 1958
- zebrata zebrata Cresson 1878
- (Pygoperdita)
- eriogoni Cockerell 1925
- wyomingensis segona Timberlake 1956 *
- (Cockerellia)
- Macrotera 1 species/subspecies
- Calliopsini
- Calliopsis 15 species/subspecies
- (Calliopsis s. str.)
- andreniformis Smith 1853
- chlorops Cockerell 1899
- coloradensis Cresson 1878
- coloratipes Cockerell 1898
- nebraskensis Crawford 1902
- rhodophilus Cockerell 1897
- teucrii Cockerell 1899
- timberlakei Shinn 1967
- (Hypomacrotera)
- callops callops Cockerell and Porter 1899
- (Nomadopsis)
- australior Cockerell 1897
- helianthi Swenk and Cockerell 1907
- puellae Cockerell 1933
- scitulus scitulus Cresson 1878
- scutellaris scutellaris Fowler 1899
- zebratus zebratus Cresson 1878
- (Calliopsis s. str.)
- Calliopsis 15 species/subspecies
- Protandrenini
- Andreninae
- Halictidae - 162 species/subspecies
- Rophitinae
-
- Dufourea 7 species/subspecies
-
- fimbriata fimbriata Cresson 1878
- marginata halictella Michener 1951
- marginata marginata Cresson 1878
- maura Cresson 1878
- mulleri Cockerell 1898
- oryx Viereck 1903
- trochantera Bohart 1948 *
-
- Dufourea 7 species/subspecies
-
- Nomiinae
-
- Dieunomia 8 species/subspecies
- (Dieunomia s. str.)
- apacha Cresson 1868
- heteropoda heteropoda Say 1824
- heteropoda kirbii Smith 1865
- mesillae Cockerell 1899
- xerophila Cockerell 1899
- (Epinomia)
- nevadensis arizonensis Cockerell 1899
- nevadensis bakeri Cockerell 1898
- triangulifera Vachal 1897
- (Dieunomia s. str.)
- Nomia 4 species/subspecies
- (Acunomia)
- foxii Dalla Torre 1896
- melanderi Cockerell 1906
- nortoni nortoni Cresson 1868
- universitatis Cockerell 1908
- (Acunomia)
- Dieunomia 8 species/subspecies
-
- Halictinae
- Halictini
- Agapostemon 9 species/subspecies
- (Agapostemon s. str.)
- angelicus Cockerell 1924
- cockerelli Crawford 1901
- coloradinus Vachal 1903
- femoratus Crawford 1901
- melliventris Cresson 1874
- sericeus Forster 1771
- splendens Lepeletier 1841
- texanus Cresson 1872
- virescens Fabricius 1775
- (Agapostemon s. str.)
- Halictus 8 species/subspecies
- (Halictus s. str.)
- farinosus Smith 1853
- ligatus Say 1837
- parallelus Say 1837
- rubicundus Christ 1791
- (Seladonia)
- confusus arapahonum Cockerell 1906
- confusus confusus Smith 1853
- tripartitus Cockerell 1895
- virgatellus Cockerell 1901
- (Halictus s. str.)
- Lasioglossum 102 species/subspecies
- (Dialictus)
- abietus Michener 1938
- absimilis Sandhouse 1924
- academicus Sandhouse 1924
- accentus Sandhouse 1924
- actuarius Sandhouse 1924
- albipennis Robertson 1890
- albohirtus Crawford 1907
- anomalus Robertson 1892
- caducus Sandhouse 1924
- clematisellus Cockerell 1904
- crassiceps Ellis 1914
- cressonii Robertson 1890
- disparilis Cresson 1872 *
- evestigatus Sandhouse 1924
- hemimelas Cockerell 1901
- hudsoniellus Cockerell 1919
- imitatus Smith 1853
- jameseae Cockerell 1933
- lactineus Sandhouse 1924
- laevissimus Smith 1853
- latus Sandhouse 1924
- lazulis Ellis 1913
- lineatulus Crawford 1906
- lionotus Sandhouse 1923
- mactus Sandhouse 1924
- meritus Sandhouse 1924
- mollis Sandhouse 1924
- nymphaearum Robertson 1895
- oblongus Lovell 1905
- obnubilus Sandhouse 1924
- occidentalis Crawford 1902
- oleosus Cockerell 1898
- pacatus Sandhouse 1924
- pallidellus Ellis 1914
- paululus Sandhouse 1924
- pavoninus Ellis 1913
- pensitus Sandhouse 1924
- perdifficilis Cockerell 1895
- perpunctatus Ellis 1913
- phaceliarum Cockerell 1919
- pictus Crawford 1902
- pikei Sandhouse 1924
- pilosus pilosus Smith 1853
- praepes Sandhouse 1924
- pruinosiformis Crawford 1906
- pruinosus Robertson 1892
- pudicus Sandhouse 1924
- ruidosensis Cockerell 1897
- sagax Sandhouse 1924
- sandhouseae Michener 1951
- scrophulariae Cockerell 1906
- sedi Sandhouse 1924
- succinipennis Ellis 1913
- supraclypeatus Mitchell 1960
- tegulariformis Crawford 1907
- tenax Sandhouse 1924
- tenuis Ellis 1913
- versatus Robertson 1902
- viridatulus Cockerell 1919
- zephyrus Smith 1853
- zophops Ellis 1914
- "Paralictus sp."
- (Evylaeus)
- aberrans Crawford 1903
- amicus Cockerell 1897 *
- cinctipes Provancher 1888
- cooleyi Crawford 1906
- cordleyi Crawford 1906
- dasiphorae Cockerell 1901
- diatretus Vachal 1904 *
- glabriventris Crawford 1907
- granosus Vachal 1904
- inconditus Cockerell 1916
- niger Viereck 1903
- nigricollis Vachal 1904
- oenotherae Stevens 1920
- ovaliceps Cockerell 1898
- pectoralis Smith 1853
- pectoraloides Cockerell 1895
- peralpinus Cockerell 1919
- peraltus Cockerell 1901
- pulveris Cockerell 1930
- regis Cockerell 1916
- supranitens Cockerell 1919
- synthyridis Cockerell 1906
- truncatus Robertson 1901
- vaporellus Cockerell 1910
- (Lasioglossum s. str.)
- anhypops McGinley 1986 *
- athabascense Sandhouse 1933
- bardum Cresson 1872
- colatum Vachal 1904
- desertum Smith 1879
- egregium Vachal 1904
- heterorhinum Cockerell 1930
- lampronotum McGinley 1986 *
- manitouellum Cockerell 1908
- paraforbesii McGinley 1986
- rupticristum McGinley 1986
- sisymbrii Cockerell 1895
- titusi Crawford 1902
- trizonatum Cresson 1874
- (Sphecodogastra)
- noctivaga Linsley and MacSwain 1962
- texanus Cresson 1872
- (Dialictus)
- Sphecodes 19 species/subspecies
-
- arroyanus Cockerell 1904
- arvensiformis Cockerell 1904
- clematidis Robertson 1897
- confertus Say 1837
- dichroa Smith 1853
- eustictus Cockerell 1906
- fragariae Cockerell 1903
- lautipennis Cockerell 1908
- mandibularis Cresson 1872
- millsi Cockerell 1919
- nitidissimus Cockerell 1910
- pecosensis pecosensis Cockerell 1904
- pulsatillae Cockerell 1906
- pycnanthemi Robertson 1897
- ranunculi Robertson 1897 *
- rhois Cockerell 1904
- rohweri Cockerell 1907
- sophiae Cockerell 1898
- sulcatulus Cockerell 1906
-
- Agapostemon 9 species/subspecies
- Augochlorini
- Augochlora 1 species/subspecies
- (Augochlora s. str.)
- pura Say 1837
- (Augochlora s. str.)
- Augochlorella 2 species/subspecies
- (Augochlorella s. str.)
- pomoniella Cockerell 1915
- striata Provancher 1888
- (Augochlorella s. str.)
- Augochloropsis 2 species/subspecies
- (Paraugochloropsis)
- metallica metallica Fabricius 1793
- sumptuosa Smith 1853
- (Paraugochloropsis)
- Augochlora 1 species/subspecies
- Halictini
- Rophitinae
- Melittidae - 3 species/subspecies
- Dasypodainae
- Dasypodaini
- Hesperapis 2 species/subspecies
- (Panurgomia)
- carinata rodecki Cockerell 1934
- larreae Cockerell 1907
- (Panurgomia)
- Hesperapis 2 species/subspecies
- Dasypodaini
- Melittinae
-
- Macropis 1 species/subspecies
- (Macropis s. str.)
- nuda Provancher 1882
- (Macropis s. str.)
- Macropis 1 species/subspecies
-
- Dasypodainae
- Megachilidae - 251 species/subspecies
- Megachilinae
- Lithurgini
- Lithurge 2 species/subspecies
- (Lithurgopsis)
- apicalis apicalis Cresson 1875
- apicalis opuntiae Cockerell 1902
- (Lithurgopsis)
- Lithurge 2 species/subspecies
- Osmiini
- Ashmeadiella 9 species/subspecies
- (Arogochila)
- lutzi Cockerell 1930
- (Ashmeadiella s. str.)
- aridula aridula Cockerell 1910
- bucconis bucconis Say 1837
- bucconis denticulata Cresson 1878
- cactorum cactorum Cockerell 1897
- californica florissantensis Michener 1936
- gillettei gillettei Titus 1904
- opuntiae Cockerell 1897
- pronitens Cockerell 1906
- (Arogochila)
- Atoposmia 3 species/subspecies
- (Atoposmia s. str.)
- abjecta abjecta Cresson 1878
- elongata Michener 1936
- (Hexosmia)
- copelandica copelandica Cockerell 1908
- (Atoposmia s. str.)
- Chelostoma 1 species/subspecies
- (Prochelostoma)
- philadelphi Robertson 1891
- (Prochelostoma)
- Heriades 7 species/subspecies
- (Neotrypetes)
- carinata Cresson 1864
- cressoni Michener 1938
- gracilior Cockerell 1897
- leavitti Crawford 1913
- micropthalma Michener 1954
- timberlakei Michener 1938
- variolosa variolosa Cresson 1872
- (Neotrypetes)
- Hoplitis 16 species/subspecies
- (Acrosmia)
- plagiostoma Michener 1947 *
- (Alcidamea)
- grinnelli grinnelli Cockerell 1910
- pilosifrons Cresson 1864
- producta interior Michener 1947
- producta producta Cresson 1864
- truncata mescalerium Cockerell 1910
- truncata truncata Cresson 1878
- uvulalis Cockerell 1902
- (Cyrtosmia)
- hypocrita Cockerell 1906
- (Dasyosmia)
- biscutellae Cockerell 1897
- (Formicapis)
- robusta Nylander 1848
- (Monumetha)
- albifrons argentifrons Cresson 1864
- cylindricus Cresson 1864
- fulgida fulgida Cresson 1864
- (Proteriades)
- incanescens nevadensis Timberlake and Michener 1950 *
- (Robertsonella)
- simplex Cresson 1864 *
- (Acrosmia)
- Osmia 68 species/subspecies
- (Acanthosmioides)
- dakotensis Michener 1937
- giliarum Cockerell 1906
- integra Cresson 1878
- kenoyeri Cockerell 1915
- longula Cresson 1864
- nifoata Cockerell 1909
- nigrifrons Cresson 1878
- physariae Cockerell 1907
- sladeni Sandhouse 1925 *
- unca Michener 1937
- (Cephalosmia)
- californica Cresson 1864
- grinnelli Cockerell 1910
- marginipennis Cresson 1878
- montana montana Cresson 1864
- subaustralis Cockerell 1900
- (Diceratosmia)
- subfasciata subfasciata Cresson 1872
- (Helicosmia)
- coloradensis Cresson 1878
- texana Cresson 1872
- (Melanosmia)
- albolateralis albolateralis Cockerell 1906
- atrocyanea atrocyanea Cockerell 1897
- austromaritima Michener 1936
- brevis brevis Cresson 1864
- bruneri Cockerell 1897
- bucephala Cresson 1864
- calla Cockerell 1897
- caulicola Cockerell 1934
- cobaltina Cresson 1878
- cockerelli Sandhouse 1939
- cordata Robertson 1902
- cyanella Cockerell 1897
- cyaneonitens Cockerell 1906
- densa densa Cresson 1864
- distincta Cresson 1864
- dolerosa Sandhouse 1939
- enixa Sandhouse 1924
- exigua Cresson 1878
- gaudiosa Cockerell 1907
- grindeliae Cockerell 1910
- hendersoni Cockerell 1907
- inermis Zetterstedt 1838
- inurbana Cresson 1878
- iridis Cockerell and Titus 1902
- juxta juxta Cresson 1864
- kincaidii Cockerell 1897
- malina Cockerell 1909
- melanopleura Cockerell 1916
- mertensiae Cockerell 1907
- nanula Cockerell 1897
- nigriventris Zetterstedt 1838
- pagosa Sandhouse 1939
- pentstemonis Cockerell 1906
- pikei Cockerell 1907
- pingreeana Michener 1937
- proxima Cresson 1864
- pulsatillae Cockerell 1907
- pusilla Cresson 1864
- raritatis Michener 1957
- rawlinsi Sandhouse 1939 *
- sculleni Sandhouse 1939
- simillima Smith 1853
- tersula Cockerell 1912
- trevoris Cockerell 1897
- tristella tristella Cockerell 1897
- (Osmia s. str.)
- lignaria propinqua Say 1837
- ribifloris biedermannii Cockerell 1900
- ribifloris ribifloris Cockerell 1900
- (Trichinosmia)
- latisulcata Michener 1936
- (unassigned)
- angustipes Cockerell 1933
- (Acanthosmioides)
- Ashmeadiella 9 species/subspecies
- Anthclassiini
- Anthidiellum 2 species/subspecies
- (Anthidiellum s. str.)
- notatum gilense Cockerell 1897
- notatum robertsoni Cockerell 1904
- (Anthidiellum s. str.)
- Anthidium 16 species/subspecies
- (Anthidium s. str.)
- atripes Cresson 1879
- clypeodentatum Swenk 1914
- emarginata Say 1824
- jocosum Cresson 1878
- maculifrons Smith 1854
- maculosum Cresson 1878
- montivagum Cresson 1878
- mormonum Cresson 1878
- placitum Cresson 1879
- porterae Cockerell 1900
- psoraleae Robertson 1902
- rodecki Schwarz 1934
- tenuiflorae Cockerell 1907
- utahense Swenk 1914 *
- (Callanthidium)
- formosum Cresson 1878
- illustre Cresson 1879
- (Anthidium s. str.)
- Dianthidum 11 species/subspecies
- (Adanthidium)
- arizonicum Rohwer 1916
- texanum Cresson 1878
- (Dianthidium s. str.)
- concinnum Cresson 1872
- cressonii Dalla Torre 1896
- curvatum sayi Cockerell 1907
- heterulkei heterulkei Schwarz 1940 *
- parvum parvum Cresson 1878
- pudicum pudicum Cresson 1879
- subparvum Swenk 1914
- ulkei perterritum Cockerell 1913
- ulkei ulkei Cresson 1878
- (Adanthidium)
- Paranthidum 1 species/subspecies
- (Paranthidum s. str.)
- jugatoria perpictum Cockerell 1898
- (Paranthidum s. str.)
- Stelis 16 species/subspecies
- (Stelis s. str.)
- callura Cockerell 1925
- coarctatus Crawford 1916
- crassiceps Cockerell 1926
- cusackae Cockerell 1910
- elegans Cresson 1864
- foederalis Smith 1854
- melanotricha Cockerell 1925
- montana Cresson 1864
- monticola Cresson 1878
- pavonina Cockerell 1908
- permaculata Cockerell 1898
- pulchra Crawford 1902
- rubi Cockerell 1898
- seneciophila Cockerell 1908
- sexmaculata Ashmead 1896
- subemarginata Cresson 1878
- (Stelis s. str.)
- Trachusa 3 species/subspecies
- (Heteranthidium)
- larreae Cockerell 1897
- occidentale Cresson 1868
- zebratum Cresson 1872
- (Heteranthidium)
- Anthidiellum 2 species/subspecies
- Dioxyini
- Dioxys 4 species/subspecies
-
- aurifuscus Titus 1901
- pomonae pomonae Cockerell 1910
- rohweri Cockerell 1908
- pacificus pacificus Cockerell 1916 *
-
- Dioxys 4 species/subspecies
- Megachilini
- Coelioxys 23 species/subspecies
- (Boreocoelioxys)
- banksi Crawford 1914
- funeraria Smith 1854
- insita Cresson 1872
- moesta Cresson 1864
- octodentata Say 1824
- porterae Cockerell 1900
- rufitarsus Smith 1854
- sayi Robertson 1897
- (Coelioxys s. str.)
- mitchelli Baker 1975
- sodalis Cresson 1878
- (Cyrtocoelioxys)
- deani Cockerell 1909
- gilensis Cockerell 1896
- modesta Smith 1854
- (Synocoelioxys)
- alternata Say 1837
- apacheorum Cockerell 1900
- erysimi Cockerell 1912
- hunteri Crawford 1914
- texana Cresson 1872
- (Xerocoelioxys)
- aperta Cresson 1878
- edita Cresson 1872
- galactiae Mitchell 1962
- grindeliae Cockerell 1900
- mesae Cockerell 1921
- (Boreocoelioxys)
- Megachile 69 species/subspecies
- (Argyropile)
- parallela Smith 1853
- townsendiana Cockerell 1898
- (Chelostomoides)
- angelarum Cockerell 1902
- exilis exilis Cresson 1872
- occidentalis Fox 1894
- subexilis Cockerell 1908
- (Eutricharaea)
- concinna Smith 1879
- rotundata Fabricius 1787
- (Leptorachis)
- petulans Cresson 1878
- (Litomegachile)
- brevis brevis Say 1837
- brevis onobrychidis Cockerell 1908
- gentilis Cresson 1872
- lippiae Cockerell 1900
- mendica mendica Cresson 1878
- mendica snowi Cresson 1878
- texana Cresson 1878
- (Megachile s. str.)
- centuncularis Linnaeus 1758
- inermis Provancher 1888
- montivaga Cresson 1878
- nivalis Friese 1903
- relativa Cresson 1878
- (Megachiloides)
- alamosana Mitchell 1934
- anograe Cockerell 1908
- bruneri Mitchell 1934
- casadae Cockerell 1898
- coloradensis Mitchell 1936
- fucata Mitchell 1934
- hilata Mitchell 1934
- hookeri Cockerell 1915
- impartita Mitchell 1934
- latita Mitchell 1934
- legalis Cresson 1879
- manifesta Cresson 1878
- maurata Mitchell 1936
- micheneri Mitchell 1936
- mucorosa Cockerell 1908
- nelsoni Mitchell 1936
- nevadensis Cresson 1879
- oslari Mitchell 1934
- pagosiana Mitchell 1934
- subanograe Mitchell 1934
- subnigra subnigra Cresson 1879
- toscata Mitchell 1934
- umatillensis Mitchell 1927
- wheeleri Mitchell 1927
- xerophila Cockerell 1933
- (Sayapis)
- fidelis Cresson 1878
- frugalis frugalis Cresson 1872
- helianthi Cockerell 1908
- inimica sayi Cresson 1878
- mellitarsis Cresson 1878
- policaris Say 1831
- pugnata pugnata Say 1837
- (Xanthosarus)
- addenda Cresson 1878
- agustini Cockerell 1905
- comata Cresson 1872
- dentitarsus Sladen 1919
- fortis Cresson 1872
- frigida frigida Smith 1853
- gemula gemula Cresson 1878
- giliae Cockerell 1906
- innupta Cockerell 1915
- latimanus Say 1823
- melanophaea calogaster Cockerell 1898
- melanophaea melanophaea Smith 1853
- melanophaea rohweri Cockerell 1906
- melanophaea submelanophaea Mitchell 1935 *
- melanophaea wootoni Cockerell 1898
- perhirta Cockerell 1898
- (Argyropile)
- Coelioxys 23 species/subspecies
- Lithurgini
- Megachilinae
- Apidae - 339 species/subspecies
- Xylocopinae
- Xylocopini
- Xylocopa 3 species/subspecies
- (Notoxylocopa)
- tabaniformis androleuca Michener 1940
- (Xylocopoides)
- californica arizonensis Cresson 1879
- (undetermined)
- "Xylocopa sp."
- (Notoxylocopa)
- Xylocopa 3 species/subspecies
- Ceratinini
- Ceratina 4 species/subspecies
- (Zadontomerus)
- calcarata Robertson 1900
- nanula Cockerell 1897
- neomexicana Cockerell 1901
- pacifica Smith 1907
- (Zadontomerus)
- Ceratina 4 species/subspecies
- Xylocopini
- Nomadinae
- Brachynomadini
- Brachynomada 1 species/subspecies
- (Melanomada)
- grindeliae Cockerell 1903
- (Melanomada)
- Brachynomada 1 species/subspecies
- Nomadini
- Nomada 105 species/subspecies
-
- accepta Cresson 1878
- adducta Cresson 1878
- agynia Cockerell 1905
- alpha alpha Cockerell 1905
- alpha dialpha Cockerell 1921
- alpha paralpha Cockerell 1921
- amorphae Swenk 1913
- aquilarum Cockerell 1903 *
- arenicola Swenk 1913
- articulata Smith 1854
- bella bella Cresson 1863
- bella callura Cockerell 1911
- beulahensis Cockerell 1903
- carinicauda Cockerell 1921
- civilis civilis Cresson 1878
- clarescens Cockerell 1921
- collinsiana Cockerell 1905
- coloradella Cockerell 1905
- coloradensis Cockerell 1903
- concinnula Cockerell 1921
- crawfordi crawfordi Cockerell 1905
- cressonii cressonii Robertson 1893
- crucis Cockerell 1903
- cuneata Robertson 1903
- custeriana Cockerell 1911
- cymbalariae Cockerell 1906
- depressa Cresson 1863
- dilucida Cresson 1878
- ednae Cockerell 1907
- edwardsii edwardsii Cresson 1878
- elegantula Cockerell 1903
- elrodi Cockerell 1903
- fontis Cockerell 1910
- formula Viereck 1903
- fragilis fragilis Cresson 1878
- frankei Cockerell 1929
- frieseana Cockerell 1904
- garciana Cockerell 1907
- gillettei Cockerell 1905
- grandis Cresson 1875
- gutierreziae Cockerell 1896
- hemphilli Cockerell 1903
- illinoiensis Robertson 1900
- itamera Cockerell 1910
- lamarensis Cockerell 1905
- lepida Cresson 1863
- leucozona Rodeck 1931
- libata Cresson 1878
- luteopicta 1905
- maculiventer Cockerell Swenk 1915
- martinella Cockerell 1903
- melanoptera Cockerell 1921
- morrisoni flagellaris Cockerell 1903
- morrisoni morrisoni Cresson 1878
- munda Cresson 1878
- nigrocincta Smith 1879 *
- ornithica Cockerell 1906
- orophila Cockerell 1921
- ovata Robertson 1903
- packardiella Cockerell 1906
- pallidella Cockerell 1905
- parata Cresson 1878
- pecosensis Cockerell 1903
- perbella Viereck 1905
- perivincta perivincta Cockerell 1905
- perivincta semirufula Cockerell 1905
- pulsatillae Cockerell 1906
- putnami Cresson 1876
- pygmaea Cresson 1863 *
- rhodosoma rhodosomella Cockerell 1903
- rhodoxantha Cockerell 1905
- ridingsii Cresson 1878
- rohweri aureopilosa Swenk 1913
- rohweri rohweri Cockerell 1906
- rubrella Cockerell 1905
- ruidosensis Cockerell 1903
- sayi Robertson 1893
- schwarzi schwarzi Cockerell 1903
- scita Cresson 1878
- sedi Cockerell 1919
- semirugosa Cockerell 1929
- semiscita Cockerell 1904
- siccorum Cockerell 1919
- snowii Cresson 1878
- subaccepta Cockerell 1907
- subrutila Lovell and Cockerell 1905
- sulphurata Smith 1854
- superba malvastri Swenk 1913
- superba superba Cresson 1863
- taraxacella Cockerell 1903
- texana Cresson 1872
- uhleri Cockerell 1905
- undulaticornis Cockerell 1906
- utahensis Moalif 1988
- utensis Swenk 1913
- vallesina honorata Cockerell 1922
- vallesina vallesina Cockerell 1906
- vegana Cockerell 1903
- vexator Cockerell 1909
- vicinalis infrarubens Cockerell 1905
- vicinalis vicinalis Cresson 1878
- vierecki Cockerell 1903
- vincta Say 1837
- xantholepis Cockerell 1911
- zebrata Cresson 1878
-
- Nomada 105 species/subspecies
- Epeolini
- Doeringiella 46 species/subspecies
- (Triepeolus)
- alpestris Cockerell 1921
- agaricifer Cockerell 1907 *
- amandus Cockerell 1921
- argyreus Cockerell 1907 *
- balteatus Cockerell 1921
- brunneus Cockerell 1921
- concavus Cresson 1878
- custeri Cockerell 1926
- cyclurus Cockerell 1923
- denverensis Cockerell 1910
- dichropus Cockerell 1921
- donatus Smith 1854
- eldoradensis Cockerell 1910
- eldredi Cockerell 1907 *
- fortis Cockerell 1921
- grindeliae Cockerell 1907
- helianthi grandior Cockerell 1919
- helianthi helianthi Robertson 1897
- helianthi pacificus Cockerell 1919
- heterurus Cockerell and Sandhouse 1924
- insolitus Cockerell 1921
- laticaudus Cockerell 1921
- lestes Cockerell 1921
- loganensis Cockerell 1925
- lunatus concolor Robertson 1898
- lunatus lunatus Say 1824
- lusor Cockerell 1925
- maculiventris Cockerell 1921
- martini Cockerell 1900
- mesillae Cockerell 1904
- nevadensis Cresson 1878
- norae Cockerell 1907
- occidentalis Cresson 1878
- paenepectoralis Viereck 1905
- pectoralisRobertson 1897
- permixtus Cockerell 1923
- rectangularis Cockerell 1921
- remigatus Fabricius 1804
- rhododontus Cockerell 1921
- rohweri Cockerell 1911
- sandhousei Cockerell 1925
- schwarzi schwarzi Cockerell 1921
- sequior Cockerell 1921
- subalpinus Cockerell 1910
- trilobatus Cockerell 1921
- wyomingensis Cockerell 1905 *
- (Triepeolus)
- Epeolus 12 species/subspecies
-
- americanus Cresson 1878
- beulahensis Cockerell 1904
- bifasciatus bifasciatus Cresson 1864
- compactus Cresson 1878
- hitei Cockerell 1908
- interruptus Robertson 1900
- lectiformis Cockerell 1925
- lutzi Cockerell 1921
- minimus Robertson 1902
- pusillus Cresson 1864
- rufomaculatus Cockerell and Sandhouse 1924
- rufulus Cockerell 1941
-
- Doeringiella 46 species/subspecies
- Ammobatoidini
- Holcopasites 6 species/subspecies
-
- arizonicus Linsley 1942
- calliopsidis calliopsidis Linsley 1943
- haematurus Cockerell and Hicks 1926
- heliopsis Robertson 1897
- pulchellus Cresson 1878
- stevensi Crawford 1915
-
- Holcopasites 6 species/subspecies
- Neolarrini
- Neolarra 6 species/subspecies
- (Neolarra s. str.)
- californica Michener 1939
- penicula Shanks 1977 *
- pruinosa Ashmead 1890
- verbesinae Cockerell 1895
- (Phileremulus)
- cockerelli Crawford 1916 *
- vigilans Cockerell 1895
- (Neolarra s. str.)
- Neolarra 6 species/subspecies
- Ammobatini
- Oreopasites 3 species/subspecies
-
- favreauae Rozen 1992
- scituli Cockerell 1906
- vanduzeei Cockerell 1925
-
- Oreopasites 3 species/subspecies
- Brachynomadini
- Apinae
- Exomalopsini
- Anthphorula 4 species/subspecies
- (Anthophorisca)
- pygmaea Cresson 1872
- (Anthophorula s. str.)
- albata Timberlake 1947
- compactula Cockerell 1897
- crenulata Timberlake 1980
- (Anthophorisca)
- Exomalopsis 1 species/subspecies
- (Phanomalopsis)
- solani Cockerell 1896
- (Phanomalopsis)
- Anthphorula 4 species/subspecies
- Emphorini
- Ancyloscelis 1 species/subspecies
-
- sejuncta Cockerell 1933
-
- Diadasia 6 species/subspecies
-
- australis australis Cresson 1878
- australis californica Timberlake 1940
- diminuta Cresson 1878
- enavata Cresson 1872
- lutzi lutzi Cockerell 1924
- ochracea Cockerell 1903
-
- Melitoma 1 species/subspecies
-
- grisella Cockerell and Porter 1899
-
- Ancyloscelis 1 species/subspecies
- Eucerini
- Eucera 18 species/subspecies
- (Synhalonia)
- acerba Cresson 1879
- actuosa Cresson 1878
- aragalli Cockerell 1904
- chrysobotryae Cockerell 1908
- chrysophila Cockerell 1914
- cordleyi Viereck 1905
- edwardsii Cresson 1878
- frater frater Cresson 1878
- fulvitarsis annae Cockerell 1937
- fulvitarsis fulvitarsis Cresson 1878
- hamata Bradley 1942
- lepida Cresson 1878
- lutziana Cockerell 1933
- pagosana Cockerell 1925
- pallidihirta Timberlake 1969
- phaceliae Cockerell 1911
- speciosa Cresson 1878
- suavis Cresson 1878
- (Synhalonia)
- Florilegus 1 species/subspecies
- (Florilegus s. str.)
- condigna Cresson 1878
- (Florilegus s. str.)
- Martinapis 1 species/subspecies
- (Martinapis s. str.)
- luteicornis Cockerell 1896
- (Martinapis s. str.)
- Melissodes 40 species/subspecies
- (Apomelissodes)
- fimbriata Cresson 1878
- (Callimelissodes)
- coloradensis Cresson 1878
- coloradensis Cresson 1878
- composita Tucker 1909
- glenwoodensis Cockerell 1905
- lupina Cresson 1878
- metenua Cockerell 1924 *
- tuckeri Cockerell 1909
- (Eumelissodes)
- agilis Cresson 1878
- bimatris LaBerge 1961
- confusa Cresson 1878
- coreopsis Robertson 1905
- gelida LaBerge 1961
- grindeliae Cockerell 1898
- hymenoxidis Cockerell 1906
- lutulenta LaBerge 1961
- menuachus Cresson 1868
- microsticta Cockerell 1905
- montana Cresson 1878
- pallidisignata Cockerell 1905
- perlusa Cockerell 1925
- perpolita LaBerge 1961
- rustica Say 1837
- saponellus Cockerell 1908
- semilupina Cockerell 1905
- snowii Cresson 1872
- subagilis Cockerell 1905
- submenuacha Cockerell 1897
- tristis Cockerell 1894
- utahensis LaBerge 1961
- verbesinarum Cockerell 1905
- vernoniae Robertson 1902
- wheeleri Cockerell 1906
- (Heliomelissodes)
- desponsa Smith 1854 *
- rivalis Cresson 1872
- (Melissodes s. str.)
- bimaculata bimaculata Lepeletier 1825
- communis communis Cresson 1878
- comptoides Robertson 1898
- gilensis gilensis Cockerell 1896
- (Tachymelissodes)
- dagosa Cockerell 1909
- opuntiella Cockerell 1911
- (Apomelissodes)
- Peponapis 2 species/subspecies
-
- pruinosa Say 1837
- utahensis Cockerell 1905 *
-
- Svastra 9 species/subspecies
- (Anthedonia)
- compta Cresson 1878
- (Brachymelissodes)
- cressonii Dalla Torre 1896
- (Epimelissodes)
- atripes atripes Cresson 1872
- comanche Cresson 1872
- helianthelli Cockerell 1905
- obliqua expurgata Cockerell 1925
- obliqua obliqua Say 1837
- petulca suffusa Cresson 1878
- texana texana Cresson 1878
- (Anthedonia)
- Tetraloniella 7 species/subspecies
-
- albata Cresson 1872
- cressoniana Cockerell 1905
- eriocarpi Cockerell 1898
- excurrens Cockerell 1903
- imitatrix Cockerell and Porter 1899
- paenalbata LaBerge 2001
- spissa Cresson 1872
-
- Xenoglossa 2 species/subspecies
- (Eoxenoglossa)
- kansensis Cockerell 1905
- strenua Cresson 1878
- (Eoxenoglossa)
- Eucera 18 species/subspecies
- Anthophorini
- Anthophora 17 species/subspecies
- (Anthophoroides)
- californica Cresson 1869
- (Clisodon)
- terminalis Cresson 1869
- (Heliophila)
- albata Cresson 1876
- arthuri Cockerell 1906
- flexipes Cresson 1879
- peritomae Cockerell 1905
- squammulosa Dours 1869
- (Lophanthophora)
- affabilis Cresson 1878
- pacifica Cresson 1878
- porterae Cockerell 1900
- ursina Cresson 1869
- (Melea)
- bomboides Kirby 1837
- occidentalis Cresson 1869
- (Mystacanthophora)
- montana Cresson 1869
- urbana Cresson 1878
- walshii Cresson 1869
- (Pyganthophora)
- edwardsii Cresson 1878
- (Anthophoroides)
- Habropoda 5 species/subspecies
-
- cineraria Smith 1879
- citula Cockerell 1929
- cressoni Dalla Torre 1896
- morrisoni Cresson 1878
- vierecki Cockerell 1909
-
- Anthophora 17 species/subspecies
- Centridini
- Centris 1 species/subspecies
- (Paracentris)
- caesalpiniae Cockerell 1897
- (Paracentris)
- Centris 1 species/subspecies
- Ericrocidini
- Ericrocis 1 species/subspecies
-
- lata Cresson 1878 *
-
- Ericrocis 1 species/subspecies
- Melectini
- Melecta 4 species/subspecies
- (Melecta s. str.)
- pacifica fulvida Cresson 1878
- separata callura Cockerell 1926
- separata johnsoni Cockerell 1905
- thoracica Cresson 1875
- (Melecta s. str.)
- Xeromelecta 2 species/subspecies
- (Melectomorpha)
- californica Cresson 1878
- interrupta Cresson 1872
- (Melectomorpha)
- Zacosmia 1 species/subspecies
-
- maculata maculata Cresson 1878
-
- Melecta 4 species/subspecies
- Bombini
- Bombus 28 species/subspecies
- (Alpinobombus)
- balteatus Dahlbom 1832
- (Bombias)
- nevadensis auricomus Robertson 1903
- nevadensis nevadensis Cresson 1874
- (Bombus s. str.)
- terricola occidentalis Greene 1858
- (Cullumanobombus)
- rufocinctus Cresson 1863
- (Fervidobombus)
- fervidus californicus Smith 1854
- fervidus fervidus Fabricius 1798
- pensylvanicus pensylvanicus DeGeer 1773
- (Fraternobombus)
- fraternus Smith 1854
- (Psithyrus)
- fernalde Franklin 1911
- insularis Smith 1861
- suckleyi Greene 1860
- variabilis Cresson 1872
- (Pyrobombus)
- bifarius bifarius Cresson 1878
- centralis Cresson 1864
- cockerelli Franklin 1913
- flavifrons flavifrons Cresson 1863
- frigidus Smith 1854
- huntii Greene 1860
- impatiens Cresson 1863 *
- melanopygus Nylander 1848
- mixtus Cresson 1878
- sitkensis Nylander 1848 *
- sylvicola Kirby 1837
- ternarius Say 1837
- (Separatobombus)
- griseocollis DeGeer 1773
- morrisoni Cresson 1878
- (Subterraneobombus)
- appositus Cresson 1878
- (Alpinobombus)
- Bombus 28 species/subspecies
- Apini
- Apis 1 species/subspecies
-
- mellifera Linnaeus 1758
-
- Apis 1 species/subspecies
- Exomalopsini
- Xylocopinae
UNIVERSITY OF COLORADO MUSEUM OF NATURAL HISTORY
Henderson Building, 15th and Broadway, Boulder, CO 80309
tel: 303.492.6892 fax: 303.492.4195
For questions or comments, please email cumuseum@colorado.edu
© Regents of the University of Colorado.