* Caldwell JA (2020) California plants as resources for Lepidoptera: a guide for gardeners, restorationists, and naturalists. 575 pp. https://www.katemarianchild.com/child-wp/wp-content/uploads/2019/04/CALIFORNIA-PLANTS-FOR-LEPIDOPTERA-22-FEB-2018.pdf
* Bastas KK (2012) First report of Erwinia amylovora on firethorn (Pyracantha coccinea) and mountainash (Sorbus sp.) in Turkey. Plant Disease 96(12), p 1818.
* Gavrilovic V, Obradovic A, Milajasevic S, Zivkovic S, Arsenijeviec M, Vojinovic M (2008) Sorbus sp. - New host of Erwinia amylovora in Serbia. Acta Horticulturae 793, 351-355.
* Robinson GS, Ackery PR, Kitching IJ, Beccaloni GW & Hernández LM (2010) HOST - A database of the world's Lepidopteran hostplants. Natural History Museum, London. https://www.nhm.ac.uk (Accessed on 7 December 2020 and 21 March 2021)
* Yee WL, Norrbom AL (2017) Provisional List of Suitable Host Plants of the Apple Maggot Fly, Rhagoletis pomonella (Walsh) (Diptera: Tephritidae), Version 1.0, 20pp, in USDA Compendium of Fruit Fly Host Information (CoFFHI)
Edition 2.0; https://coffhi.cphst.org/.
------- confirmed host
* Yee WL, Goughnour RB (2008) Host use by and new host records of apple maggot, western cherry fruit fly, and other Rhagoletis species (Diptera: Tephritidae) in western Washington state. Pan-Pacific Entomologist 84: 179–193
* Stigter H, Geraedts WHJM, Spijkers HCP (1997) Thaumetopoea processionea in the Netherlands: Present status and management perspectives (Lepidoptera: Notodontidae). Proceedings of the Section Experimental and Applied Entomology of the Netherlands Entomological Society (N.E.V.) 3-16.
------- Occasional larval feeding.