EPPO Global Database

Urtica dioica subsp. gracilis(URTLY)

Pests

Organism Type
Diabrotica virgifera zeae (as Urtica) (DIABVZ) Host
* Clark SM, LeDoux DG, Seeno TN, Riley EG, Gilbert AJ, Sullivan JM (2004) Host plants of leaf beetle species occurring in the United States and Canada (Coleoptera: Megalopodidae, Orsodacnidae, Chrysomelidae, excluding Bruchinae). Coleopterists Society, Special Publication 2, 615 pp.
------- Adult host.
Lepyronia quadrangularis (LEPOQU) Host
* Doering KC (1942) Host plant records of Cercopidae in North America, North of Mexico (Homoptera) (continued). Journal of the Kansas Entomological Society 15(3), 73-92.
------- As Urtica gracilis. Nymphs found feeding on this plant.
Phymatotrichopsis omnivora (PHMPOM) Host
* Anonymous (1960) Index of Plant Diseases in the United States. Agriculture Handbook no 165, USDA-ARS (US) 531 pp.
Xylella fastidiosa (XYLEFA) Host
* EFSA (2024) Update of the Xylella spp. host plant database – Systematic literature search up to 31 December 2023. EFSA Journal 22, e8898. https://efsa.onlinelibrary.wiley.com/doi/epdf/10.2903/j.efsa.2024.8898
------- Subspecies unknown.
Graphocephala atropunctata (GRCPAT) Major host
* Hewitt WB, Frazier NW, Freitag JH (1949) Pierce's disease investigations. Hilgardia 19, 207-264.
Popillia japonica (as Urtica) (POPIJA) Wild/Weed
* INTERNET
Regione Piemonte. Servizio fitosanitario. Lotte obbligatorie - Coleottero scarabeide del Giappone (Popillia japonica Newman). Popillia danni e difesa. https://www.regione.piemonte.it/web/sites/default/files/media/documenti/2019-06/popillia_danni_difesa.pdf
------- Attractive plant for the pest but without economic or ornamental relevance (weed).