In Livia junci [a Eurasian species] ... it is the hatching larvae, which migrate ... to feed on the growing points of the developing shoots, that induce the formation of the highly characteristic galls (Schmidt, 1966). At high psyllid densities each shoot takes on a rosette growth form and the ... linear leaves become puffy and swollen basally and the tips wither and curl. ... [T]he plant [may] turn[ ]a deep reddish brown. Similar galls are induced by several of the known Livia species.

- Hodkinson I. D. & Bird J.: (2000) Sedge and rush-feeding psyllids of the subfamily Liviinae (Insecta: Hemiptera: Psylloidea): a review^©