Pristiphora geniculata (Hartig, 1840)

mountain-ash sawfly

on Sorbus

Pristiphora geniculata: larvae on Sorbus aucuparia

Sorbus aucuparia, Belgium, prov. Limbourg, Ham, Veldhovenheide, 30.vii.2016 © Carina Van Steenwinkel; det. Jorgen Ravoet

gall

a row of oviposition scars in the serrations along the leaf margin (and not, as Buhr writes, in the midrib of a leaflet?). The larvae live as gregarious ectophages.

hostplants

Rosaceae, monophagous

Sorbus aucuparia.

references

Beneš & Holuša (2015a), Buhr (1965a), Pschorn-Walcher & Altenhofer (2000a).

mod 2.ix.2018