Gymnancyla canella (Denis & Schiffermüller, 1775)
hoary knot-horn
on Salsola, etc.
Salsola kali, Belgium, prov. West Flanders, Knokke, 23.viii.2018 © Ruben Meert: habitat
larva in the stem
another image
the frass is ejected from the gallery and is trapped in spinning
here also spinning is visible
Salsola kali, Belgium, prov. West Flanders, Zeebrugge, strand Westdam, 23.x.2018 © Ruben Meert. In the spinning also many sand grains are caught.
parasite
The larva essentially lives as a stem borer, but according to the literature older larvae often also live free among a spinning, feeding on the developing seeds. Pupation in an oval cocoon, made up of sand and silk, in the soil,
host plants
Amaranthaceae, oligofaag
Atriplex; Salicornia; Salsola kali.
phenology
Univoltine or bivoltine.
distribution within Europe
references
Beirne (1954a), Bentley (2008a), Gastón & Vives Moreno (2018a), Huertas Dionisio (2007a), Wegner (2013a), Ylla, Macià & Huertas Dionisio (2008a), Tokár, Richter, Richter, ao (2010a).