Table 2: Endemic bees captured and observed as foragers during bloom in blueberry and red clover seed crops in the Willamette Valley in studies conducted between 2005 and 2009.

FamilySpeciesBlueberry1,2Red clover1,3

ColletidaeHylaeus calvus (Metz)
Hylaeus rudbeckiae Cockerell and Casad
HalictidaeAgapostemon texanus Cresson
Agapostemon virescens (Fabricius)
Halictus confusus Smith
Halictus farinosus Smith
Halictus ligatus Say
Halictus rubicundus (Christ)
Halictus tripartitus Cockerell
Lasioglossum mellipes (Crawford)
Lasioglossum olympiae (Cockerell)
Lasioglossum pacificum (Cockerell)
Lasioglossum sisymbrii (Cockerell)
Lasioglossum titusi (Crawford)
Lasioglossum trizonatum (Cresson)
Sphecodes sp.
AndrenidaeAndrena sp.
MeghachilidaeAnthidium sp.
Heriades sp.
Megachile brevis Say
Megachile perihirta Cockerell
Osmia lignaria Say
Osmia sp. (2) (5)
ApidaeAnthophora bomboides stanfordiana Cockerell
Anthophora urbana Cresson
Bombus appositus Cresson
Bombus bifarius nearcticus Handlirsch
Bombus californicus Smith
Bombus caliginosus (Frison)
Bombus griseocollis (DeGeer)
Bombus melanopygus Nylander
Bombus mixtus Cresson
Bombus nevadensis Cresson
Bombus occidentalis Greene
Bombus sitkensis Nylander
Bombus vosnesenskii Radoszkowski
Ceratina acantha Provancher
Ceratina micheneri Daly
Ceratina nanula Cockerell
Melissodes agilis Cresson
Melissodes bimatris LaBerge
Melissodes robustior Cockerell
Psythirus sp.
Synhalonia sp.
Triepeolus sp. (2)

Numbers1 in parenthesis refer to number of species.
2 From [15, 23], and unpublished data.
3 From [16], and unpublished data.