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).