GALL
the midrib is thickened and curved, the leaf becomes a rough surface and is disfigured, the growth of the plant stops.

HOST PLANTS
Convolvulaceae, narrowly oligophagous

Calystegia sepium; Convolvulus arvensis.

NOTES
applied in the United States in the biological control of “bindweed”.

- Willem N. Ellis: (2021) Plant Parasites of Europe^©

Reference: https://bladmineerders.nl/parasites/animalia/arthropoda/acari/actinotrichida/prostigmata/eleutherengona/eriophyoidea/eriophyidae/eriophyinae/acerini/aceria/aceria-malherbae/