Augasma aeratella (Zeller, 1839)

knotgrass case-bearer

on Polygonum (Persicaria)

galls (from Houard, 1908a)

gall

usually red-coloured, fusiform, up to 18 mm long gall at the end of a stem; at its lower part often still some leaves. Inside a single larva (caterpillar) or pupa.

hostplants

Polygonaceae, almost monophagous

Polygonum aviculare, arenarium, patulum, romanum.

Rarely Persicaria lapathifolia.

references

Baldizzone (1983c), Baldizzone & van der Wolf (2000a), Biesenbaum (1997a), Biesenbaum & van der Wolf (1999a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Emmet, Langmaid, Bland ao (1996a), Fazekas & Schreurs (2010a), Houard (1908a), Nel (1992b), Patzak (1974a), Redfern & Shirley (2011a), Schütze (1931a), Šulcs (1996a), Szőcs (1977a), Toll (1962a), Tomasi (2014a).