Janus femoratus (Curtis, 1830)

Hymenoptera, Cephidae

on Quercus

gall

inconspicuous, fusiform swelling of about a cm long in the upper part of a young shoot; the part of the shoot above is wilting. Inside a single sawfly caterpillar or its pupa.

hostplants

Fagaceae, narrowly monophagous

Quercus petraea, pubescens, robur.

references

Buhr (1965a), Burggraaf-van Nierop & van Achterberg (1990a), Hellrigl (2010a), Pschorn-Walcher & Altenhofer (2000a, 2006a).

30/06/2014

mod 28.vi.2017