Hydraecia petasitis Doubleday, 1847

butterbur

on Petasites

Hydraecia petasitis: damage to inflorescence of Petasites hybridus

Petasites hybridus, Belgium, prov. East Flanders, Moerzeke, Broek van Baasrode, 30.iv.2016 © Ruben Meert: damage pattern

Hydraecia petasitis: young larva

young larve

parasite

The young larva bores in the peduncle; this causes the inflorescence to wither and double. The larva descends, then first bores in the leaf petioles, ultimately in the rootstock. Pupation in the soil.

host plants

Asteraceae, monophagous

Petasites hybridus.

phenology

Univoltine.

distribution within Europe

(PESI, 2018).

references

Friebe (1991a), Rosenbauer (2017a).

mod 30.ix.2018