Andrena aculeata

Vulnerable

Columbia River Basin

Andrena winnemuccana

Vulnerable (data deficient)

OR

Ashmeadiella sculleni

Vulnerable

OR, NV

Bombus affinis (subgenus Bombus)

Vulnerable

Bombus franklini (see also subgenus Bombus)

Franklin bumble bee

Critically imperiled (possibly extinct)

CA, OR

Bombus lucorum (subgenus Bombus)

Vulnerable

Bombus occidentalis (subgenus Bombus)

Vulnerable

Bombus terricola (subgenus Bombus)

Vulnerable

Calliopsis barri

Vulnerable

MB, ON, SK

ID, OR

Epeoloides pilosula

Critically imperiled

CT, GA, MA, MD, MI, MT, NC, ND, NJ, OH, PA, NY, VA, WI, WV

Eucera douglasiana

Vulnerable (data deficient)

WA

Eucera frater lata

Vulnerable (data deficient)

Columbia River Basin

Halictus harmonius

Critically imperiled

CA

Halictus pinguismentus

Data deficient

BN

Hesperapis kayella

Vulnerable (data deficient)

ID, NV

Hoplitis orthognathus

Vulnerable

ID, OR, NV

Hoplitis producta subgracilis

Vulnerable

Columbia River Basin