Plant Parasites of Europe

leafminers, galls and fungi

Parapiesma quadratum

Parapiesma quadratum (Fieber, 1844)

beet leaf bug

on Amaranthaceae


the leaf is strongly twirled, the veins and petioles are thickened and twisted.


Amaranthaceae, oligophagous

Atriplex; Beta vulgaris; Chenopodium album, glaucum; Salicornia; Salsola; Suaeda.

A population living on the Isles of Scilly, described as Piesma spergulariae Woodroffe, 1966, lives on Spergularia rupicola (Caryophyllaceae).

egg, larva

see Heiss & Péricart.


Piesma quadratum; P. rotundicollis (Rey, 1888).


The galling is not a direct result of feeding damage by the bug, but by a virus that is transmitted in this way.


Alexander (2008a), Brandner (2015a), Buhr (1964b), Costas, Vázquez, López & Ribes (2007a), Goula, Navalpotro, Torres & Ubach (2014a), Gravestein (1969a), Heiss & Péricart (1893a), Šefrová (2015b), Tomasi (2014a).

Last modified 6.iv.2022