Epitrimerus violarius Liro, 1941
on Viola
gall
the mites live as vagrants at the underside of the leaves. At high densities the leaves may turn brown.
hostp lants
Viola, monophagous
Viola canina & subsp. ruppii, mirabilis, riviniana, uliginosa.
references
Farkas (1965a), Ripka (2007a), Roivainen (1947a, 1951a).