* Capinera JL (2001) Heliothis virescens (Fabricius) (Insecta: Lepidoptera: Noctuidae) EENY-219 (latest revision Dec. 2018). Featured Creatures. University of Florida. https://entnemdept.ufl.edu/creatures/field/tobacco_budworm.htm
------- common pest of snapdragon.
* Cranshaw WS (2020) Tobacco (Geranium) Budworm. Fact Sheet 5.581. Colorado State University Extension. Available at: extension.colostate.edu
* Edde PA (2018) Principal Insects Affecting Tobacco Plants in the Field. Contributions to Tobacco Research 28, 117-165.
* EPPO (2024) EPPO Technical Document No. 1091. Pest risk analysis for Chloridea virescens. EPPO, Paris. Available at https://gd.eppo.int/taxon/HELIVI/documents
------- Main host (evidence that the plant supports populations of the pest in several generations or years, i.e. true hosts, or plant mentioned as common or preferred host – see PRA for further details on the host)
* Chadwick CF (1965) Checklist of the Brachyderinae (Col. Curculionidae) occurring in Australia. Journal of the Entomological Society of Australia (NSW) 2, 21-34.
* British Columbia Ministry of Agriculture. Western yellowstriped armyworm (Spodoptera praefica). https://rdno.civicweb.net/document/127358/western-yellowstriped-armyworm.pdf?handle=3CD053B4F8D54F9CBB93F8D6D5572C27
