Plant Parasites of Europe

leafminers, galls and fungi

Lasioptera flexuosa

Lasioptera flexuosa Winnertz, 1853

on Phragmites

Lasioptera flexuosa: larvae in opened gall

Phragmites australis, Denmark © Simon Haarder: larvae

Lasioptera flexuosa: pupa



Feeble swelling of the upper part of a sterile stem. The pith here is turned blackish by a symbiotic fungus; it harbours a number of reddish-orange larvae, that hibernate and pupate in the gall. Univoltine.

host plants

Poaceae, monophagous

Phragmites australis.


Microlasioptera, Thomasiella, flexuosa.


Buhr (1965a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Gagné & Jaschhof (2014a), Houard (1908a), Nartshuk (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Schwarzländer & Häfliger (2000a), Skuhravá & Skuhravý (1992a, 1997a, 1999a, 2021a: 180), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý &aJørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Spungis (2003a), Waitzbauer (1969a), Waitzbauer, Pruscha & Picher (1972a).

Last modified 28.ix.2021