Phragmites australis, België, prov. Namen, Étang de Virelles © Stéphane Claerebout

opened

Phragmites australis, Belgium, prov. Liège, Bas-Oha, Java © Jean-Yves Baugnée: exit openings

gall

Galls protruding in the inner wall of the stem. The gals are very hard, and have about the size of a grain of rice. The solitary larvae are white or pale pinkish. There are two generations. Pupation within the gall; the larvae of the second generation hibernate in the gall, and pupate after the winter.

In the exceptional case that the galls develop on lateral shoots that are parasitised by Lasioptera arundinis the galls are not formed at the inside of the stem, but rather at the outside.

hostplants

Poaceae, monphaag

Phragmites australis.

larva

prosternum with spatula (from Möhn, 1955a)

synonyms

Perrisia inclusa; Giraudiella, Perrisia, incurvans Nijveldt, 1953.

references

Abraham & Carstensen (1982a), Baetens & De Bruyn (1999a), Bruun (2015a), Buhr (1965a), Gagné (2010a), Dauphin & Aniotsbehere (1997a), Fusu (2017a), de Vere Graham & Gijswijt (1998a) , Houard (1908a), Lambinon, Schneider & Feitz (2001b), Máca (2012a), Möhn (1955a), Nartshuk (2011a), Nijveldt (1953a, 1954a, 1967a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Sánchez (2016a), Schwarzländer & Häfliger (2000a), Simova-Tošić, Skuhravá & Skuhravý (2000a), Skuhravá (2006a), Skuhravá & Skuhravý (1992a, 1997a, 1999a, 2002a, 2004b, 2008a, 2021a: 179), Skuhravá, Skuhravý & Carbonnelle (2017a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Ebejer (2002a), Skuhravá, Skuhravý & Elsayed (2014a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Turin-van den Burg (1976a), Waitzbauer (1969a), Waitzbauer, Pruscha & Picher (1972a).