Plant Parasites of Europe

leafminers, galls and fungi

Janetiella frankumi

Janetiella frankumi Harris, 2003

on Rosa


rounish or elongate, bright red, swellings of the young branches; initially smooth, later irregularly fissured. They contain a number of irregular cavities, each with an orange-yellow larva. Later in summer the galls rupture, releasing the larvae for pupation in the soil.

host plants

Rosaceae, narrowly monophagous

Rosa spinosissima.


Chinery (2011a), Gagné (2010a), Harris (2004a), Redfern & Shirley (2011a), Skuhravá & Skuhravý (2021a: 227), Skuhravá, Skuhravý & Buhr (2013a).

Last modified 3.x.2021