Flower-Visiting Insects
of Horseweed


Conyza canadensis (Horseweed)
(Bees collect pollen or suck nectar; flies and beetles feed on pollen or suck nectar; other insects suck nectar; some observations are from Robertson, Graenicher, Moure & Hurd, Krombein et al., and Williams as indicated below)

Bees (long-tongued)
Anthophoridae (Epeolini): Epeolus pusillus sn (Rb)

Bees (short-tongued)
Halictidae (Halictinae): Agapostemon sericea sn (Gr), Augochlorella striata sn (Gr), Halictus ligatus (MH), Halictus sp. (Lasioglossum sp.) sn (Gr), Halictus rubicunda sn (Gr), Lasioglossum albipennis sn (Gr), Lasioglossum cinctipes sn (Gr), Lasioglossum connexus sn cp (Gr), Lasioglossum coriaceus sn (Gr), Lasioglossum imitatus sn cp (Gr), Lasioglossum pilosus pilosus sn (Gr), Lasioglossum tegularis sn cp (Gr), Lasioglossum versatus sn cp (Rb, Gr), Lasioglossum zephyrus sn (Gr); Halictidae (Sphecodini): Sphecodes prosphorus sn (Gr); Colletidae (Hylaeinae): Hylaeus mesillae (Kr); Andrenidae (Panurginae): Calliopsis andreniformis cp (Kr)

Wasps
Sphecidae (Crabroninae): Anacrabro ocellatus, Ectemnius dives (Gr), Ectemnius lapidarius (Gr), Lestica confluentus (Gr), Lestica producticollis (Gr); Sphecidae (Larrinae): Larra analis (Gr), Tachytes distinctus (Rb); Sphecidae (Philanthinae): Cerceris clypeata (Rb, Gr), Cerceris deserta (Gr), Eucerceris fulvipes (Gr), Eucerceris zonata (Rb); Vespidae: Dolichovespula arenaria (Gr), Polistes fuscata (Rb); Vespidae (Eumeninae): Ancistrocerus adiabatus (Rb, Gr), Eumenes fraterna (Gr), Euodynerus foraminatus (Gr), Stenodynerus anormis (Gr), Symmorphus cristatus (Gr); Chrysididae: Ceratochrysis perpulchra (Gr); Perilampidae: Perilampus hyalinus sn fq (Gr); Gasteruptiidae: Gasteruption tarsatorius (Gr); Ichneumonidae: Ceratogastra ornata (Rb)


Flies
Syrphidae: Allograpta obliqua (Gr), Eristalis tenax sn (Rb), Paragus bicolor (Gr), Sphaerophoria contiqua (Gr), Syritta pipiens sn (Rb, Gr), Toxomerus geminatus (Gr), Toxomerus marginatus sn (Rb, Gr); Conopidae: Thecophora occidensis sn (Rb); Tachinidae: Cylindromyia dosiades (Gr), Cylindromyia fumipennis sn (Rb), Leucostoma simplex (Gr); Sarcophagidae: Helicobia rapax (Gr), Sarcophaga sp. (Gr), Sarcophaga sarracenioides (Gr), Sphixapata trilineata sn (Rb); Anthomyiidae: Delia platura (Gr); Calliphoridae: Pollenia rudis sn (Rb); Muscidae: Musca domestica sn (Rb), Neomyia cornicina sn (Rb); Sciaridae: Sciara fuliginosus (Gr); Tephritidae: Euraresta bella (Gr); Agromyzidae: Melanagromyza aeneoventris (Gr)

Beetles
Cantharidae:
Chauliognathus pennsylvanicus (Wms); Coccinellidae: Coccinella novemnotata sn (Gr)

Plant Bugs
Miridae: Adelphocoris rapidus (Gr), Cimex ruficornis (Gr), Lygus lineolaris (Gr), Metriorrhynchomiris dislocatus (Gr), Plagiognathus sp. (Gr); Thyreocoridae: Corimelaena pulicarius (Gr)


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