Polemonium reptans (Jacob's Ladder)
(Bees suck nectar or collect pollen; flies suck nectar or feed on pollen; other insects suck nectar; observations are from Robertson)

Bees (long-tongued)
Apidae (Apinae): Apis mellifera sn cp fq; Apidae (Bombini): Bombus auricomus sn, Bombus bimaculatus sn, Bombus griseocallis sn fq, Bombus impatiens sn fq, Bombus pensylvanica sn fq, Bombus vagans sn, Psithyrus variabilis sn; Anthophoridae (Anthophorini): Anthophora ursina sn; Anthophoridae (Ceratinini): Ceratina calcarata sn, Ceratina dupla dupla sn fq; Anthophoridae (Eucerini): Synhalonia belfragii sn cp fq, Synhalonia speciosa sn fq; Anthophoridae (Nomadini): Nomada affabilis sn, Nomada hydrophylli sn fq, Nomada ovatus sn; Megachilidae (Osmiini): Hoplitis pilosifrons sn, Osmia atriventris sn, Osmia conjuncta sn cp fq, Osmia lignaria lignaria sn, Osmia pumila sn cp fq

Bees (short-tongued)
Halictidae (Halictinae): Agapostemon sericea sn, Augochlora purus purus sn cp fq, Augochlorella aurata sn, Augochlorella striata sn cp fq, Halictus rubicunda sn cp, Lasioglossum coreopsis sn cp, Lasioglossum coriaceus sn cp, Lasioglossum obscurus sn, Lasioglossum pilosus pilosus sn cp, Lasioglossum versatus sn; Andrenidae (Andreninae): Andrena carlini sn, Andrena distans sn, Andrena geranii sn fq, Andrena nasonii cp, Andrena polemonii sn cp olg, Andrena sayi sn cp

Flies
Syrphidae: Pipiza femoralis fp np, Rhingia nasica sn fp, Toxomerus marginatus fp np; Empididae: Empis pudica sn; Bombyliidae: Bombylius major sn

Butterflies
Pieridae: Colias philodice fq

Skippers
Hesperiidae: Erynnis brizo, Erynnis juvenalis fq

Moths
Sphingidae: Hemaris thysbe; Noctuidae: Anagrapha falcifera fq

Beetles
Coccinellidae: Coleomegilla maculata; Pyrochroidae: Pedilus terminalis