Plant Parasites of Europe

leafminers, galls and fungi

Nematus septentrionalis

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

(PESI, 2019).

synonyms

Craesus, Croesus, septentrionalis.

references

Beneš & Holuša (2015a), Buhr (1964b), Hoop (1983a), Liston (1996b), Macek (2012c), Pschorn-Walcher & Altenhofer (2000a, 2006a), Roskam (2019a), Savina & Chevin (2012a), Schedl (2003a), Stritt (1939a), Taeger, Altenhofer, Blank, ao (1998a).

Last modified 25.iv.2020