Helenium autumnale (Sneezeweed)
(Bees collect pollen or suck nectar; beetles and flies suck nectar or feed on pollen; other insects suck nectar; some observations are from Robertson, otherwise they are from Graenicher, Moure & Hurd, and LaBerge as indicated below)
Bees (long-tongued)
Apidae (Apinae): Apis mellifera sn cp (Rb, Gr); Apidae (Bombini): Bombus centralis sn cp (Gr), Bombus fraternus sn, Bombus griseocallis sn (Rb, Gr), Bombus impatiens sn fq, Bombus pensylvanica sn fq (Rb, Gr), Bombus vagans sn cp (Gr), Psithyrus citrinus sn (Gr); Anthophoridae (Ceratinini): Ceratina dupla dupla sn cp (Gr); Anthophoridae (Epeolini): Triepeolus cressonii cressonii sn fq, Triepeolus helianthi helianthi sn (Gr); Anthophoridae (Eucerini): Melissodes agilis sn (Rb, Gr), Melissodes bimaculata bimaculata (LB), Melissodes boltoniae sn cp fq, Melissodes rustica sn cp, Melissodes trinodis sn cp, Svastra obliqua obliqua sn; Anthophoridae (Xylocopini): Xylocopa virginica sn cp (Gr); Megachilidae (Coelioxini): Coelioxys modesta sn (Gr), Coelioxys octodentata sn, Coelioxys rufitarsis rufitarsis sn (Gr); Megachilidae (Megachilini): Megachile brevis brevis sn cp fq, Megachile centuncularis sn cp (Gr), Megachile latimanus sn cp (Rb, Gr), Megachile mendica sn cp
Bees (short-tongued)
Halictidae (Halictinae): Agapostemon sericea sn (Gr), Agapostemon virescens sn (Rb, Gr), Augochlorella striata sn (Gr), Halictus confusus sn cp (Rb, Gr), Halictus ligatus sn (Gr), Halictus sp. (Lasioglossum sp.) sn (Gr), Lasioglossum coriaceus sn (Gr), Lasioglossum zephyrus sn cp (Gr); Halictidae (Nomiinae): Nomia nortoni nortoni (MH); Colletidae (Colletinae): Colletes compactus sn cp; Andrenidae (Andreninae): Andrena chromotricha sn (Gr)
Wasps
Sphecidae (Bembicinae): Bembix americana (Rb, Gr), Bicyrtes ventralis (Rb, Gr) fq; Sphecidae (Sphecinae): Ammophila nigricans, Ammophila procera, Isodontia philadelphica (Gr), Prionyx atrata; Vespidae: Polistes fuscata, Vespula germanica
Flies
Syrphidae: Dasysyrphus venustus sn, Epistrophe emarginata (Gr), Eristalis tenax (Gr), Eristalis transversus (Gr), Syritta pipiens (Gr); Bombyliidae: Poecilanthrax alcyon sn (Rb, Gr), Sparnopolius confusus sn (Rb, Gr); Anthomyiidae: Delia platura (Gr); Calliphoridae: Cochliomyia macellaria (Gr), Lucilia sericata (Gr); Muscidae: Stomoxys calcitrans (Gr); Tachinidae: Archytas analis (Gr)
Butterflies
Nymphalidae: Phyciodes tharos; Pieridae: Colias philodice, Pieris rapae (Gr); Lycaenidae: Lycaena hyllus (Gr)
Skippers
Hesperiidae: Polites themistocles (Rb, Gr)
Moths
Ctenuchidae: Cisseps fulvicollis
Beetles
Cantharidae: Chauliognathus pennsylvanicus sn fq; Chrysomelidae: Diabrotica undecimpunctata fp (Gr); Meloidae: Epicauta pensylvanica fp np
Plant Bugs
Miridae: Lygus lineolaris (Gr), Plagiognathus sp. (Gr); Pentatomidae: Euschistus serva, Euschistus variolaria (Gr)