Tetramesa calamagrostidis (Schlechtendal, 1891)
on Calamagrostis
Calamagrostis epigeios; from Claridge (1961a)
Calamagrostis epigeios, Belgium, prov. Namur, Matagne, 1.iii.2017 © Sébastien Carbonelle; wasps reared, identified by Gérard Delvare
opened gall with parasitoid larva
gall
Culm above the second or third node with one or more chambers, each containing a single larve. The culm locally is weakly swollen. Plant and inflorescence clearly stunted; infested are recognisable by the thick and shortened stem, causing the inflorescence not to rise above the grass vegetation. The larva hibernates in the gall and pupates in the spring.
host plants
Poaceae, monophagous
Calamagrostis arundinacea, canescens, epigeios.
synonyms
Harmolita, Isthmosoma, Isosoma, calamagrostidis.
parasitoids, predators
references
Buhr (1964a), Dauphin & Aniotsbehere (1997a), Dawah (1987a), de Vere Graham & Gijswijt (1998a), Henneicke, Dawah & Jervis (1992a), Houard (1908a), Koponen & Vikberg (2016a), Ludwig (1974a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a).