Plant Parasites of Europe

leafminers, galls and fungi

Thrips linarius

Thrips linarius Uzel, 1895

flax thrips

on Linum


Larvae and adults free on the young leaves at the tip of the stem.

host plants

Linaceae, monophagous

Linum usitatissimum.

Adults can be found on various different herbs, bud breed exclusively on flax.


Univoltine; hibernation as winged adults, in the soil.

distribution within Europe

(PESI, 2020).


Together with, but to a lesser degree than, Thrips angusticeps, responsible for the flax disease known as “bad heads”. Initially, the plants develop a yellowish hue, while the tips stand erect, rather than droop. Furthermore the growing points are swollen; de leaves develop, mainly at the edges, silvery decolourations that later turn brown. The leaves curl away from the stem, giving the top of the plants a rough aspect, rather than the smooth outline of healthy plants.


Buhr (1964b), Franssen & Mantel (1960a, 1962a), Raspudić, Ivezić, Brmež & Trdan (2009a), Roskam (2009a, 2019a).

Last modified 20.viii.2020