Tetramesa giraudi (von Schlechtendal, 1891)
on Schedonorus
Schedonorus giganteus, Apeldoorn, Beekbergerwoud, 2018 © Roelof Jan Koops; imago det, Sandrine Ulenberg
opened galls
several galls were formed unusually, viz. outside of the culm. Yet both T. giraudi and the parasitoid E. palustris were reared from them, like from normal galls.
gall
Above the 2nd or 3rd node there are several larval chambers in the culm, one above the other, each with one larva or pupa. The culm is locally sclerified, and its weak swelling is almost hidden by the surrounding leaf sheath.
hostplants
Poaceae, monophagous
Schedonorus arundinaceus subsp. orientalis, giganteus, pratensis.
synonyms
Harmolita, Isosoma, giraudi.
inquilines
references
Buhr (1964a), Claridge (1961a), Dauphin & Aniotsbehere (1997a), Henneicke, Dawah & Jervis (1992a), Houard (1908a), Popescu & Fusu (2003a), Tomasi (2014a).