Plant Parasites of Europe

leafminers, galls and fungi

Grapholita delineana

Grapholita delineana Walker, 1863

eurasian hemp borer

on Cannabis, Humulus


The young larva for a short while lives freely on the leaves, causing window feedings, rarely also as a leaf miner; Soon it bores itself in the stem, causing a one cm long fusiform swelling.

host plants

Cannabaceae, oligophagous

Humulus japonicus lupulus.

In North America a pest on Cannabis sativa.


Several generations; the larva hibernates in the stem.

distribution within Europe

(PESI, 2019).


Body reddish; head light brown, sides darkened; prothoracic and anal plates brownish yellow; see Hinneberg, Swatschek.


Grapholitha, Laspeyresia, tetragrammana Staufinger, 1879.


Hinnegerg (1984a), McPartland (2002a), Meijerman & Ulenberg (2000a), Sch├╝tze (1931a), Swatschek (1958a).

Last modified 18.vii.2022