" Adult Butterfly Feeding-Nectar Flower Associations: Constraints of Taxonomic Affiliation, Butterfly, and Nectar Flower Morphology." Nectar feeding without pollination is sometimes referred to as nectar thievery (Inouye, [9]), nectar robbing (e.g., Agrawal et al., [1]; Bauder et al., [3]), or ineffective legitimate visitation (Castro et al., [4]). Keywords: butterflies; Lycaenidae; nectar larceny; nectar robbing; Penstemon EN butterflies Lycaenidae nectar larceny nectar robbing Penstemon 1 5 5 02/03/23 20230201 NES 230201 The relationships between Lepidoptera and plants are complicated.