Field Guide Descriptions: Covell (1984; as Discestra trifolii); Beadle and Leckie (2012) | Online Resources: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLD | Technical Description, Adults: Forbes (1954), as Scotogramma trifolii | Technical Description, Immature Stages: Forbes (1954); Wagner et al. (2011) | |