Aculus kerneri (Nalepa, 1894)
on Gentiana, Gentianella
Parts of the plants are are modified in a compact bunch, with shortened branches and reduced and malformed leaves; the flowers are greened and disfigured, parts may have been changed into leaves.
Gentianaceae, narrowly oligophagous
Aceria, Eriophyes, kerneri.
Buhr (1964b,c), Farkas (1963a), Hellrigl (2003a), Houard (1909a), Jočić & Petanović (2012a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a), Weidner (1954a).