yellow-faced bumble bee

Bombus vosnesenskii

Member of bumble bees (genus Bombus)
apine bees (subfamily Apinae)
bees (epifamily Anthophila)
insects (class Insecta)
hexapods (subphylum Hexapoda)
arthropods (phylum Arthropoda)
animals (kingdom Animalia)

yellow hairs on face and front of thorax (to wing attachment point) and a thin band near the tail (T4)
only black hairs underneath
hairs appear closely cropped
nearly indistinguishable from fog-belt bumble bee (Bombus caliginosus) below

Chris’s observations: 30 (9 are research grade)

Locations:

Big Basin SP: 3
Edgewood Park & Natural Preserve: 3
Sweeney Ridge National Recreation Area: 3
Fremont Older OSP: 2
Murray Ranch SP: 2
Almaden Quicksilver CP
Ansel Adams Wilderness
Castle Rock SP
Coyote Hills RP
Dry Creek Pioneer RP
Ed R. Levin CP
Huckleberry Botanic RP
Lexington Reservoir CP
San Bruno Mountain State & County Park
San Pedro Valley CP
Sanborn CP
Santa Teresa CP
Sierra Azul; OSP
Sierra Vista OSP
Skyline Ridge OSP
Stevens Creek CP
Ulistac Natural Area, Santa Clara

Months:

Jan.: 2
Feb.: 1
Mar.: 1
Apr.: 4
May: 6
Jun.: 9
Jul.: 2
Aug.: 4
Sep.: 1

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Taxon info: iNaturalist – BugGuide

Bay Area species: iNaturalist