Plant Parasites of Europe

leafminers, galls and fungi

Phanacis taraxaci

Phanacis taraxaci (Ashmead, 1897)

dandelion gall wasp

on Taraxacum

Phanacis taraxaci: gall on Taraxacum officinale

Taraxacum officinale, France, dép. Nord, Trélon © Sébastien Carbonnelle

Phanacis taraxaci: gall, section

transverse section through the gall

Phanacis taraxaci: larva



2-4 mm large, hard, unilocular swellings of the midrib, smooth and often red in colour. Often they are aggregated, into masses of upto 3 cm long and a cm thick. This happens in particular in the pedicel, that locally may develop into a sausage-like gall.

host plants

Asteraceae, monophagous

Taraxacum officinale.


Gillettea taraxaci.


Buhr (1965a), Dauphin & Aniotsbehere (1997a), Eady & Quinlan (1963a), Hellrigl & Bodur (2015a), Nieves-Aldrey (1994a, 2008a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a).

Last modified 7.iii.2019