Parapiesma quadratum (Fieber, 1844)
beet leaf bug
on Amaranthaceae
gall
the leaf is strongly twirled, the veins and petioles are thickened and twisted.
hostplants
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.
synonyms
Piesma quadratum; P. rotundicollis (Rey, 1888).
notes
The galling is not a direct result of feeding damage by the bug, but by a virus that is transmitted in this way.
references
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).