Urophora affinis (Frauenfeld, 1857)

on Centaurea

gall

one or more larvae (maggots) live, each in its own vertical cell, in the thickened and lignified receptacle; here also the pupation takes place. Because the gall acts as a nutrient sink, the plant’s vitality is reduced.

hostplants

Asteraceae, narrowly monophagous

Centaurea arenaria, cariensis, diffusa, paniculata, pinetorum, spinosa, stoebe, virgata.

Exclusively on species of the subgenus Centaurea (Acrolophus).

synonyms

Euribia affinis.

notes

applied in the United States in the biological control of the host plant.

references

Buhr (1964b), Klasa, Kaczorowska & SoszyƄski (2011a), Lang, Hansen, Richard & Ziolkowski (2000a), Shorthouse (1989a), White & Korneyev (1998a).

mod 30.viii.2018