Nematus septentrionalis (Linnaeus, 1758)
polyfaag
parasite
Some ten oval eggs are deposited just below the epidermis in a row at the underside of the midrib of a leaf. The larvae live freely on the leaves, mostly gregariously, feeding at the leaf margin.
host plants
Alnus glutinosa, incana; Betula pendula, pubescens; Corylus avellana; Populus; .Salix pentandra.
phenology
Several generations; hibernation as a prepupa in a cocoon in the soil.
distribution within Europe
larva
see Prous ao (2019a)
synonyms
Craesus, Croesus, septentrionalis.
references
Beneš & Holuša (2015a), Buhr (1964b), Hoop (1983a), Liston (1996b), Macek (2012c), Prous, Liston, Kramp, ao (2019a), Pschorn-Walcher & Altenhofer (2000a, 2006a), Roskam (2019a), Savina & Chevin (2012a), Schedl (2003a), Stritt (1939a), Taeger, Altenhofer, Blank, ao (1998a), Zwakhals & Blommers (2022a).