Department of Biology at the University of Rochester
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Centris (Paracentris) ceasalpiniae Cockerell male. Photo taken by Lucia de las Salas Arcos


Female Calliopsis (Hypomacrotera) subalpinus Cockerell collecting pollen from Sphaeralcea laxa. Photo taken by Rich Hatfield


One of our pollination sites taken early, April Spring 2005. Most of the flowers in the picture are Lesquerella gordoni, Eschscholziacalifornica and Phacelia spp. Photo by T.H. Roulston

Night blooming cereus (Peniocereus greggii (Engel.) Britt. and Rose. Photo by R.L. Minckley

 

Below is a list of bee species and their floral hosts collected in the San Bernardino Valley from the year 2000 to 2006. Many specimens of bees and plants are not identified, or have not had their identities adequately confirmed. Periodic updates of the data will be made to reflect these changes.

Besides ongoing identifications, another word of caution is that visits to floral hosts are scored regardless of the number of visits to the host, and regardless of sex or if the bee visit was to collect pollen, nectar, or both. Therefore, any conclusions about the significance to the pollination relationship from these tables would be tenuous, and possibly incorrect.

All bee species collected on flowers
Family   
Genus   
All Plant Species from Which Bees Were Collected
Agapostemon angelicus
Agapostemon cockerelli
Agapostemon melliventris
Agapostemon nasutus
Agapostemon tyleri
Ancylandrena koebelei
Ancyloscelis melanostomus
Andrena auricoma
Andrena fracta
Andrena olivacea
Andrena prima
Andrena primulifrons
Andrena prunorum
Andrena semipunctata
Anthidiellum ehrhorni
Anthidiellum notatum
Anthidium atripes
Anthidium cockerelli
Anthidium emarginatum
Anthidium jocosum
Anthidium maculifrons
Anthidium maculosum
Anthidium mormonum
Anthidium nr. paroselae
Anthidium palmarum
Anthidium paroselae
Anthidium porterae
Anthidium sonorense
Anthocopa copelandica arefacta
Anthocopa enceliae mortua
Anthophora affabilis
Anthophora californica Ph
Anthophora centriformis
Anthophora curta
Anthophora edwardsi gohrmanae
Anthophora lesquerellae
Anthophora maculifrons
Anthophora nr. forbseii
Anthophora petrophila
Anthophora phenax
Anthophora porterae
Anthophora salazariae
Anthophora urbana
Anthophora vallorum
Anthophora vannigera
Anthophorula albata
Anthophorula compactula
Anthophorula completa
Anthophorula consobrina
Anthophorula euphorbiae
Anthophorula exilis
Anthophorula gutierreziae
Anthophorula nr. crassicornis
Anthophorula palmarum
Anthophorula pygmaea
Anthophorula rozeni
Anthophorula rufiventris
Anthophorula scapalis
Anthophorula tricinctula
Apis mellifera
Ashmeadiella bigeloviae
Ashmeadiella biscopula
Ashmeadiella breviceps
Ashmeadiella bucconis
Ashmeadiella bucconis bucconis
Ashmeadiella cactorum
Ashmeadiella cazieri
Ashmeadiella clypeodentata
Ashmeadiella clypeodentata simplicior
Ashmeadiella cubiceps clypeata
Ashmeadiella digiticauda
Ashmeadiella femorata
Ashmeadiella foveata
Ashmeadiella gillettei
Ashmeadiella gillettei gillettei
Ashmeadiella gillettei rubra
Ashmeadiella gillettei rufiventris
Ashmeadiella holtii
Ashmeadiella hurdiana
Ashmeadiella leucozona
Ashmeadiella meliloti
Ashmeadiella meliloti meliloti
Ashmeadiella neomexicana
Ashmeadiella opuntiae
Ashmeadiella prosopidis
Ashmeadiella rhodognatha
Ashmeadiella rubrella
Ashmeadiella rufiventris
Ashmeadiella truncativentris
Ashmeadiella vandykiella
Atoposmia abjecta bequaerti
Atoposmia copelandica
Atoposmia hypostomalis
Atoposmia robustula
Augochlora pomoniella
Augochlorella neglectula
Augochlorella pomoniella
Augochloropsis metallica
Augochloropsis metallica metallica
Bombus pensylvanicus sonorus
Bombus sonorus
Calliopsis anomoptera
Calliopsis australior
Calliopsis callops
Calliopsis coloratipes
Calliopsis crypta
Calliopsis empelia
Calliopsis euphorbiae
Calliopsis gilva
Calliopsis limbus
Calliopsis macswaini
Calliopsis nigromaculata
Calliopsis obscurella
Calliopsis pectidis
Calliopsis persimilis
Calliopsis puellae
Calliopsis rogeri
Calliopsis rozeni
Calliopsis squamifera
Calliopsis subalpinus subalpinus
Calliopsis verbenae
Caupolicana yarrowi
Centris angustifrons
Centris atripes
Centris ceasalpiniae
Centris cockerelli
Centris hoffmanseggiae
Centris rhodopus
Centris ruthannae
Ceratina acantha
Ceratina apacheorum
Ceratina arizonensis
Ceratina melanoptera
Ceratina metallica
Ceratina nanula
Ceratina neomexicana
Ceratina pacifica
Coelioxys apacheorum
Coelioxys edita
Coelioxys hirsutissima
Coelioxys novomexicana
Coelioxys octodentata
Coelioxys texana
Colletes algarobiae
Colletes bryanti
Colletes chamaesarachae
Colletes clypeonitens
Colletes intermixtus
Colletes kincaidii
Colletes louisae
Colletes perileucus
Colletes prosopidis
Colletes salicicola
Colletes scopiventer
Colletes simulans simulans
Colletes sphaeralceae
Colletes wootoni
Conanthalictus new sp. 1
Diadasia afflicta
Diadasia afflictula
Diadasia diminuta
Diadasia lutzi
Diadasia martialis
Diadasia megamorpha
Diadasia ochracea
Diadasia opuntiae
Diadasia rinconis
Diadasia sphaeralcearum sphaeralcearum
Diadasia tropicalis
Diadasia vallicola
Dianthidium curvatum
Dianthidium heterulkei
Dianthidium implicatum
Dianthidium parvum
Dianthidium platyurum
Dianthidium pudicum
Dieunomia nevadensis
Dioxys productus
Dolichostelis perpulchra
Dufourea malacothricis
Dufourea mulleri
Dufourea pulchricornis
Dufourea trochantera
Epeolus compactus
Epeolus mesillae
Ericrocis lata
Ericrocis pintada
Eucera actuosa
Eucera mohavensis
Eucera nr. astragalis
Eucera phaceliae
Eucera tricinctella
Exomalopsis dimidiata
Exomalopsis similis aridis
Exomalopsis solani
Exomalopsis solidaginis
Halictus ligatus
Halictus tripartitus
Heriades cruciferus
Heriades micheneri
Heriades micropthalma
Heriades texana
Heriades timberlakei
Hesperapis cockerelli
Hesperapis larreae
Heterosarus arizonicus
Holcopasites calliopsidis
Holcopasites illinoiensis minimus
Holcopasites insoletus
Holcopasites rozeni
Holcopasites stevensi
Holcopasites tegularis
Hoplitis biscutellae
Hoplitis grinnelli grinnelli
Hoplitis truncata mescalerium
Hylaeus asininus
Hylaeus cressoni mesillae
Hylaeus episcopalis coquilletti
Hylaeus hurdi
Hylaeus insolitus
Lasioglossum acarophilum
Lasioglossum amicum
Lasioglossum arcanum
Lasioglossum clematisellum
Lasioglossum comulum
Lasioglossum lampropotum
Lasioglossum microlepoides
Lasioglossum morrilli
Lasioglossum nr. comulum
Lasioglossum nr. lionotum
Lasioglossum nr. perparvum
Lasioglossum nr. persimilis
Lasioglossum oleosum
Lasioglossum pectoraloides
Lasioglossum pruinosiforme
Lasioglossum semibrunneum
Lasioglossum semicaeruleum
Lasioglossum sisymbrium
Lasioglossum tegularis
Lasioglossum unicum
Leiopodus singularis
Lithurgus apicalis
Lithurgus echinocacti apicalis
Lithurgus planifrons
Macrotera echinocacti
Macrotera latior
Macrotera portalis
Macrotera rubida
Macrotera solitaria
Megachile adelphodonta
Megachile astragali
Megachile bradleyi
Megachile brevis
Megachile chilopsidis
Megachile coquilletti
Megachile dischorina
Megachile exilis
Megachile frugalis frugalis
Megachile frugalis pseudofrugalis
Megachile gentilis
Megachile inimica sayi
Megachile laurita
Megachile lippiae
Megachile lobatifrons
Megachile mendica
Megachile newberryae
Megachile odontostoma
Megachile policaris
Megachile pollicaris
Megachile prosopidis
Megachile reflexa
Megachile sidalceae
Megachile spinotulata
Megachile texana
Megachile xerophila
Melecta bohartorum
Melissodes agilis
Melissodes communis
Melissodes limbus
Melissodes paroselae
Melissodes subagilis
Melissodes thelypodii
Melissodes tristis
Neolarra alba
Neolarra batrae
Neolarra californica
Neolarra pruinosa
Neolarra rozeni
Neolarra verbesinae
Neolarra vigilans
Neopasites cressoni
Nomada americana
Nomada gutierreziae
Nomada vegana
Nomia mesillensis
Nomia nevadensis
Nomia tetrazonata tetrazonata
Oreopasites arizonica
Oreopasites linsleyi
Osmia clarescens?
Osmia marginata
Osmia subfasciata
Osmia titusi
Paranomada nitida
Paranomada velutina
Peponapis michelbacherorum
Peponapis pruinosa
Peponapis timberlakei
Perdita albipennis
Perdita albovittata
Perdita ashmeadi
Perdita ashmeadi vierecki
Perdita asteris
Perdita callicerata
Perdita chamaesarachae
Perdita cladothricis
Perdita dasylirii
Perdita diversa
Perdita efferta
Perdita exclamans
Perdita hurdi
Perdita ignota
Perdita larreae
Perdita latior
Perdita lenis
Perdita luciae luciae
Perdita luciae decora
Perdita malacothricis
Perdita marcialis
Perdita melanochlora
Perdita mentzeliae
Perdita mimosae
Perdita minima
Perdita munita
Perdita nr. punctifera
Perdita pectidis
Perdita portalis
Perdita punctifera
Perdita punctosignata
Perdita semicaerulea
Perdita semicrocea
Perdita sexmaculata
Perdita solitaria
Perdita stathamae
Perdita triangulifera
Protandrena arizonicus
Protandrena bancrofti
Protandrena mexicanorum
Protandrena nanulus
Protandrena townsendi
Protoxea gloriosa
Pseudopanurgus dicksoni
Pseudopanurgus perpunctatus
Ptilothrix sumichrasti
Specodosoma pratti
Sphecodes asclepiadis
Sphecodes fortior
Sphecodes mandibularis
Sphecodes perlustrans
Sphecodes semicoloratus
Sphecodes sophiae
Sphecodosoma dicksoni
Stelis elongativentris
Stelis perpulchra
Svastra machaerantherae
Svastra sila
Synhalonia virgata
Syntrichalonia exquisita
Townsendiella pulchra
Trachusa larreae
Triepeolus concavus
Triepeolus donatus
Triepeolus grandis
Triepeolus kathrynae
Triepeolus lunatus
Triepeolus pennicilliferus
Triepeolus remigatus
Triepeolus verbesinae
Triopasites penniger
Xenoglossa angustior
Xenoglossa strenua
Xylocopa californica arizonensis
Xylocopa varipuncta
Zacosmia maculata
Acacia_constricta
Alliona_incarnata
Allionia_incarnata Ph
Antennaria_sp?
Apiaceae_sp?
Argemone_platyceras
Argemone_pleiacantha Ph
Argemone_sp?
Asteraceae_sp.1
Aster_sp?
Astragalus_allochrous
Astragalus_sp?
Atriplex_canescens Ph
Baccharis_sarothroides
Bahia_absinthifolia Ph
Baileya_multiradiata Ph
Baileya_pleniradiata Ph
Baileya_sp?
Boerhaavia_sp?
Brassicaceae_sp?
Brassica_sp?
Caesalpinia_sp?
Calycoseris_wrightii Ph
Cammisonia_chamaenerioides
Cassia_sp?
Ceonathus_sp?
Cercidium_aculeata
Chaenactis_stevioides
Chamaesaracha_coronopus Ph
Chamaesaracha_sordida Ph
Chamaesyce_sp?
Chenopodium_neomexicana
Chilopsis_linearis
Compaester_sp?
Convolvulus_arvensis Ph
Cryptantha_angustifolia Ph
Cryptantha_sp?
Cucurbita_foetidissima Ph
Cucurbita_pepo
Dalea_formosa Ph
Dasylirion_wheeleri
Descurainia_pinnata
Descurainia_sophia Ph
Descurainia_sp?
Dichelostemma_pulchellum Ph
Dyssodia_acerosa
Dyssodia_sp?
Eriastrum_diffusum Ph
Erigeron_sp?
Eriogonum_albertianum Ph
Eschscholzia_californica
Euphorbia_sp?
Fouquieria_splendens
Gaillardia_pulchella
Gilia_sp?
Glandularia_wrightii Ph
Guara_sp?
Gutierrezia_microcephala
Helenium_thurberi Ph
Helianthus_annuus
Hymenoxys_odorata Ph
Hymenoxys_sp?
Ipomoea_sp?
Ipomopsis_longiflora Ph
Kallstroemia_californica Ph
Kallstroemia_grandiflora
Kallstroemia_sp?
Krameria_parviflora
Laenecia_coulteri
Lappula_redowskii
Larrea_tridentata Ph
Lepidium_sp?
Lepidium_thurberi
Lesquerella_fendleri
Lesquerella_gordoni Ph
Leucelene_ericoides
Leucophyllum_frutescens
Linum_lewisii
Lycium_andersonii
Lycium_sp?
Machaeranthera_canescens canescens
Machaeranthera_gracilis
Machaeranthera_sp?
Machaeranthera_spinulosa
Malacothrix_fendleri
Malacothrix_glabrata
Malacothrix_sp?
Malvaceae_sp?
Malvella_sp?
Marrubium_vulgare
Melilotus_alba
Mentzelia_albicaulis
Mentzelia_pumila
Mimulus_guttatus
Nama_hispidum
Nama_sp?
Opuntia_(Platyopuntia)_sp?
Opuntia_engelmannii Ph
Opuntia_leptocaulis?
Opuntia_magenta
Opuntia_phaeacantha Ph
Opuntia_santa_rita
Opuntia_sp?
Opuntia_spinosior
Penstemon_parryi
Phacelia_arizonica
Phacelia_coerulea
Phacelia_crenulata
Phacelia_distans
Phacelia_sp?
Physalis_acutifolia
Physalis_sp?
Porophyllum_gracile
Proboscidea_althaeifolia
Proboscidea_parviflora
Prosopis_juliflora
Prosopis_velutina
Prunus_sp?
Rafinesquia_neomexicana
Rafinesquia_sp?
Salix_gooddingii
Salsola_iberica
Salsola_tragus
Sida_sp?
Sisymbrium_irio
Solanum_elaeagnifolium
Sphaeralcea_angustifolia
Sphaeralcea_laxa
Sphaeralcea_sp?
Stephanomeria_sp?
Tamarix_aphylla
Tamarix_ramosissima
Tidestroemia_lanuginosa
Tiquilia_canescens
Tithonia_fruticosa
Trixis_sp?
Verbena_plicata
Verbesina_enceliodes_exauriculata
Viguiera_sp?
Zinnia_acerosa
Ziziphus_obtusifolia