Plant Parasites of Europe

leafminers, galls and fungi

Eucosma metzneriana

Eucosma metzneriana (Treitschke, 1830)

mugwort bell

on Artemisia

cf. Eucosma metzneriana: gall on Artemisia vulgaris

Artemisia vulgaris, Belgium, prov. Antwerp, Mechelen, de Potpolder © Carina Van Steenwinkel; identification uncertain

cf. Eucosma metzneriana: larva in gall on Artemisia vulgaris

young larve in opened gall


inconspicuous fusiform swelling of the stem, recognisable because the frass is ejected as a light coloured lump. Inside a pale yellow caterpillar with a brown head. Pupation in the stem in a flimsy cocoon, close to an already prepared exit opening. The part of the plant above the gall often ultimately dies off.

host plants

Asteraceae, narrowly monophagous

Artemisia absinthium, vulgaris.


Univoltine; hibernation as larva.

distribution within Europe

(PESI, 2019).


Pictures on Lepiforum; ee also Swatschek.


See Patočka & Turčáni.


Grapholitha, Semasia, metzneriana.


Bradley, Tremewan & Smith (1979a), Buhr (1964a), Disqué (1905a), Hancock & Bland (2015b) , Houard (1909a), Huisman & Koster (1996a), Huisman, Koster, van Nieukerken & Ellis (2009a), Lepiforum (2019), Patočka & Turčáni (2005a), Schütze (1931a), Swatschek (1958a), Szőcs (1977a), Tokuda, Kawauchi, Kikuchi & Iwasaki (2015a), Tomasi (2014a), Wimmer (1997a).

Last modified 29.ii.2020