Department of Biology at the University of Rochester
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Centris (Paracentris) caesalpiniae 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 Ph
Agapostemon cockerelli
Agapostemon melliventris
Agapostemon nasutus
Agapostemon tyleri Ph
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 cochimi
Anthidium cockerelli
Anthidium emarginatum
Anthidium jocosum
Anthidium maculifrons
Anthidium maculosum
Anthidium mormonum
Anthidium palmarum
Anthidium paroselae
Anthidium placitum
Anthidium porterae
Anthidium sonorense
Anthidium tenuiflorae
Anthidium utahense
Anthophora affabilis
Anthophora californica Ph
Anthophora centriformis
Anthophora curta
Anthophora edwardsii
Anthophora exigua
Anthophora lesquerellae
Anthophora maculifrons
Anthophora nr. forbseii
Anthophora occidentalis
Anthophora pachyodonta
Anthophora petrophila
Anthophora phenax
Anthophora porterae
Anthophora salazariae
Anthophora urbana
Anthophora vallorum
Anthophora vannigera
Anthophorula albata
Anthophorula asteris
Anthophorula centralis
Anthophorula compactula
Anthophorula completa
Anthophorula consobrina
Anthophorula crenulata
Anthophorula euphorbiae
Anthophorula exilis
Anthophorula gutierreziae
Anthophorula ignota
Anthophorula palmarum
Anthophorula parva
Anthophorula pygmaea
Anthophorula rozeni
Anthophorula rufiventris
Anthophorula scapalis
Anthophorula sonorensis
Anthophorula torticornis
Anthophorula tricinctula
Anthophorula varleyi
Apis mellifera
Ashmeadiella bigeloviae Ph
Ashmeadiella breviceps
Ashmeadiella bucconis
Ashmeadiella cactorum
Ashmeadiella cazieri
Ashmeadiella clypeodentata
Ashmeadiella foveata
Ashmeadiella gillettei
Ashmeadiella hurdiana
Ashmeadiella leucozona
Ashmeadiella meliloti
Ashmeadiella occipitalis
Ashmeadiella opuntiae
Ashmeadiella prosopidis
Ashmeadiella r. rubrella
Ashmeadiella rhodognatha
Ashmeadiella vandykiella
Atoposmia anthodyta
Atoposmia copelandica arefacta
Augochlora pura
Augochlorella n. neglectula
Augochlorella pomoniella
Augochloropsis metallica Ph
Bombus sonorus
Brachynomada margaretae
Calliopsis anomoptera
Calliopsis australior
Calliopsis callops
Calliopsis callosa
Calliopsis coloratipes
Calliopsis crypta
Calliopsis empelia
Calliopsis gilva
Calliopsis helianthi Ph
Calliopsis limbus
Calliopsis macswaini
Calliopsis nigromaculata
Calliopsis obscurella
Calliopsis pectidis
Calliopsis persimilis
Calliopsis puellae Ph
Calliopsis rogeri
Calliopsis rozeni
Calliopsis s. subalpina
Calliopsis squamifera
Calliopsis teucrii
Calliopsis verbenae
Caupolicana elegans
Caupolicana yarrowi
Centris angustifrons
Centris atripes
Centris caesalpiniae
Centris cockerelli
Centris hoffmanseggiae
Centris rhodopus
Centris ruthannae
Ceratina acantha
Ceratina apacheorum Ph
Ceratina arizonensis
Ceratina melanoptera
Ceratina nanula
Ceratina neomexicana
Coelioxys apacheorum
Coelioxys edita
Coelioxys hirsutissima
Coelioxys hunteri
Coelioxys novomexicana
Coelioxys octodentata
Coelioxys texana
Colletes algarobiae
Colletes bryanti
Colletes chamaesarachae
Colletes clypeonitens
Colletes eulophi
Colletes intermixtus
Colletes kincaidii
Colletes louisae
Colletes lutzi
Colletes perileucus
Colletes prosopidis
Colletes s. simulans
Colletes salicicola
Colletes scopiventer
Colletes sphaeralceae
Colletes wootoni
Conanthalictus sp.1
Diadasia afflictula
Diadasia australis
Diadasia diminuta Ph
Diadasia lutzi
Diadasia martialis
Diadasia megamorpha
Diadasia ochracea Ph
Diadasia opuntiae
Diadasia rinconis
Diadasia sphaeralcearum
Diadasia tropicalis
Diadasia vallicola
Dialictus sp?
Dianthidium curvatum sayi
Dianthidium discors
Dianthidium heterulkei
Dianthidium implicatum
Dianthidium parkeri
Dianthidium parvum
Dianthidium platyurum
Dianthidium pudicum
Dianthidium ulkei
Dieunomia nevadensis
Dioxys producta subruber
Dufourea malacothricis
Dufourea mulleri
Dufourea pulchricornis
Epeolus compactus
Epeolus mesillae
Ericrocis lata
Ericrocis pintada
Eucera actuosa
Eucera edwardsii
Eucera phaceliae
Eucera tricinctella
Exomalopsis dimidiata
Exomalopsis mellipes
Exomalopsis solani
Exomalopsis solidaginis
Halictus ligatus Ph
Halictus tripartitus Ph
Heriades crucifer
Heriades micheneri
Heriades micropthalma
Heriades texanus
Heriades timberlakei
Hesperapis cockerelli
Hesperapis fuchsi
Hesperapis larreae
Holcopasites apacheorum
Holcopasites arizonicus
Holcopasites bohartorum
Holcopasites illinoiensis minimus
Holcopasites insoletus
Holcopasites stevensi
Holcopasites tegularis
Hoplitis biscutellae
Hoplitis grinnelli
Hoplitis producta interior
Hoplitis remotula
Hylaeus asininus
Hylaeus episcopalis coquilletti
Hylaeus hurdi
Hylaeus insolitus
Hylaeus mesillae Ph
Lasioglossum acarophilum
Lasioglossum amicum
Lasioglossum angustius
Lasioglossum arcanum
Lasioglossum clematisellum
Lasioglossum comulum
Lasioglossum desertum
Lasioglossum microlepoides
Lasioglossum morrilli
Lasioglossum oleosum
Lasioglossum pectoraloides
Lasioglossum pruinosus
Lasioglossum semibrunneum
Lasioglossum semicaeruleum
Lasioglossum sisymbrii
Lasioglossum unicum
Leiopodus singularis
Lithurgus apicalis
Lithurgus echinocacti
Lithurgus planifrons
Macrotera echinocacti
Macrotera latior
Macrotera mellea
Macrotera portalis
Macrotera rubida
Macrotera solitaria
Macrotera texana
Megachile adelphodonta
Megachile astragali
Megachile bradleyi
Megachile brevis
Megachile chilopsidis
Megachile coquilletti
Megachile discorhina
Megachile exilis
Megachile frugalis
Megachile fucata
Megachile gentilis
Megachile inimica sayi
Megachile integra
Megachile laurita
Megachile lippiae
Megachile lobatifrons
Megachile mendica
Megachile newberryae
Megachile odontostoma
Megachile policaris
Megachile prosopidis
Megachile pugnata
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 batrae
Neolarra californica
Neolarra cockerelli
Neolarra pruinosa
Neolarra rozeni
Neolarra verbesinae
Neolarra vigilans
Neopasites cressoni
Nomada americana
Nomada gutierreziae
Nomada vegana
Nomia mesillensis
Nomia t. tetrazonata
Oreopasites arizonica
Oreopasites favreauae
Oreopasites linsleyi
Oreopasites vanduzeei
Osmia cerasi
Osmia clarescens
Osmia lignaria propinqua
Osmia liogastra
Osmia marginata
Osmia palmula
Osmia prunorum
Osmia subfasciata
Osmia texana
Osmia titusi
Osmia unca
Paranomada nitida
Paranomada velutina
Peponapis pruinosa
Perdita albescens
Perdita albipennis
Perdita albovittata
Perdita amoena
Perdita ashmeadi vierecki
Perdita asteris
Perdita bradleyana
Perdita callicerata Ph
Perdita calloleuca
Perdita chamaesarachae
Perdita cladothricis
Perdita dasylirii
Perdita difficilis
Perdita diversa
Perdita exclamans Ph
Perdita florissantella
Perdita hurdi Ph
Perdita ignota
Perdita larreae Ph
Perdita lenis
Perdita luciae
Perdita malacothricis
Perdita melanochlora
Perdita mimosae
Perdita minima
Perdita munita
Perdita pectidis
Perdita punctifera
Perdita punctosignata Ph
Perdita punctulata
Perdita semicaerulea
Perdita semicrocea
Perdita sexmaculata
Perdita stathamae
Perdita triangulifera
Protandrena arizonicus
Protandrena bancrofti
Protandrena mexicanorum
Protandrena nanulus
Protandrena townsendi
Protoxaea gloriosa
Pseudopanurgus dicksoni
Pseudopanurgus perpunctatus
Ptilothrix sumichrasti
Sphecodes asclepiadis
Sphecodes fortior
Sphecodes mandibularis
Sphecodes perlustrans
Sphecodes semicoloratus
Sphecodes sophiae
Sphecodosoma dicksoni
Sphecodosoma pratti
Stelis elongativentris Ph
Stelis perpulchra
Svastra machaerantherae
Svastra sila
Syntrichalonia exquisita
Tetraloniella eriocarpi
Tetraloniella imitatrix
Tetraloniella sphaeralceae
Townsendiella pulchra
Trachusa larreae
Triepeolus circumculus
Triepeolus concavus
Triepeolus grandis
Triepeolus helianthi
Triepeolus kathrynae
Triepeolus loomisorum
Triepeolus lunatus
Triepeolus pennicilliferus
Triepeolus remigatus
Triepeolus townsendi
Triepeolus verbesinae
Triopasites penniger
Xenoglossa angustior
Xenoglossa patricia
Xenoglossa strenua
Xylocopa californica arizonensis
Xylocopa varipuncta
Zacosmia maculata
Acacia neovernicosa
Allionia incarnata Ph
Anemopsis californica subglabra
Antennaria sp?
Apiaceae sp?
Argemone platyceras Ph
Argemone pleiacantha
Astragalus allochrous
Astragalus sp?
Astragalus thurberi
Atriplex canescens Ph
Baccharis sarothroides
Bahia absinthifolia Ph
Baileya multiradiata Ph
Baileya pleniradiata Ph
Baileya sp?
Boerhaavia sp?
Brassica sp?
Calycoseris wrightii Ph
Cammisonia chamaenerioides
Ceanothus buxifolius
Chaenactis stevoides Ph
Chamaesaracha coronopus Ph
Chamaesaracha sordida Ph
Chenopodium dessicatum
Chenopodium neomexicana
Chilopsis linearis Ph
Compaester sp?
Convolvulus arvensis Ph
Cryptantha angustifolia Ph
Cryptantha sp?
Cucurbita foetidissima Ph
Cucurbita pepo
Dalea formosa Ph
Dasyliron wheeleri Ph
Descurainia pinnata
Descurainia sophia Ph
Descurainia sp?
Dichelostemma pulchellum Ph
Dyssodia acerosa
Eriastrum diffusum Ph
Erigeron divergens
Erigeron sp?
Eriogonum albertianum Ph
Eschscholzia californica
Euphorbia sp?
Fouquieria splendens
Gaillardia pulchella
Gaura parviflora
Gilia sinuata
Gilia sp?
Glandularia gooddingii
Gutierrezia microcephala
Helenium thurberi Ph
Helianthus annuus
Hymenoxys odorata Ph
Hymenoxys sp?
Ipomoea purpurea
Ipomoea sp?
Ipomopsis longiflora Ph
Kallstroemia californica Ph
Kallstroemia grandiflora
Krameria parviflora
Laennecia coulteri
Lappula redowskii
Larrea tridentata Ph
Lepidium sp?
Lepidium thurberi Ph
Leucelene ericoides Ph
Leucophyllum frutescens
Linum lewisii
Lupinus concinnus Ph
Lycium andersonii wrightii
Lycium berlanderi
Lythrum californicum
Machaeranthera gracilis Ph
Machaeranthera sp?
Machaeranthera spinulosa
Malacothrix fendleri Ph
Malacothrix glabrata
Malvella sp?
Marrubium vulgare
Melilotus alba
Melilotus sp?
Mentzelia albicaulis
Mentzelia pumila Ph
Mimulus guttatus Ph
Nama hispidum
Opuntia engelmannii Ph
Opuntia magenta
Opuntia phaeacantha Ph
Opuntia santarita Ph
Opuntia sp?
Opuntia spinosior Ph
Opuntia violacea
Parkinsonia aculeata
Penstemon parryi
Phacelia arizonica Ph
Phacelia coerulea
Phacelia crenulata Ph
Phacelia distans
Phacelia sp?
Physalis acutifolia Ph
Physalis sp?
Physaria fendleri
Physaria gordoni Ph
Porophyllum gracile Ph
Proboscidea althaeifolia Ph
Proboscidea parviflora
Prosopis velutina Ph
Rorippa nasturtium-aquaticum
Salix gooddingii
Salsola iberica Ph
Salsola tragus
Senecio flaccidus
Senna bauhinioides
Sida sp?
Sidalcea neomexicana
Sisymbrium irio
Solanum elaeagnifolium
Sphaeralcea angustifolia
Sphaeralcea laxa
Sphaeralcea sp?
Stephanomeria pauciflora
Stephanomeria sp?
Tamarix aphylla Ph
Tamarix ramosissima Ph
Tidestroemia lanuginosa
Tiquilia canescens Ph
Tithonia fruticosa
Trixis sp?
Verbena plicata
Verbesina enceliodes
Viguiera sp?
Zinnia acerosa Ph
Ziziphus obtusifolia