Galeruca tanaceti (Linnaeus, 1758)
on Tanacetum, etc.
Belgium, prov. Antwerp, bank canal Dessel-Kwaadmechelen, 20.ix.2011 © Carina Van Steenwinkel: fresh cluster of eggs
hardened clutch
parasite
Larvae communally free on the leaves. Pupation in a wide-meshed cocoon in the soil. Oviposition in groups of up to 20 eggs on dried plant stems that extend above the surrounding vegetation; the orange eggs are covered with froth, that soon dries into a shining black crust.
host plants
Asteraceae, Caryophyllaceae, polyphagous
Achillea millefolium; Centaurea jacea; Cerastium arvense; Pilosella officinarum; Stellaria graminea, holostea; Tanacetum vulgare.
Adults feed on the same plants, but also others, e.g, Origanum vulgare; Solanum tuberosum.
phenology
Univoltine; hibernation as eggs.
distribution within Europe
larva, pupa
Pictures in Rheinheimer & Hassler.
pupa
See Steinhausen (1996b, 2002a).
references
Anagnou–Veroniki, Papaioannou–Souliotis, Karanstasi & Giannopolitis (2008a), Biondi (1994b),Borowiec (1984a), Bukejs (2009d), Farina (2015a), Gavrilović & Ćurčić (2013a), Gavrilović, Gavrilović, Ćurčić, ao (2014a), Ilie (2017a), Petitpierre i Vall (1994a), Rheinheimer & Hassler (2018a), Rozner & Rozner (2014a), Salisbury & Halstead (2011a), Sárospataki (1999a), Schmitz (1998a), Steinhausen (1996b, 2002a), Wanntorp & Fägerström (2006a).