older gall

Achillea millefolium, Belgium, prov. Liège, Plombière © Jean-Yves Baugnée

older gall

gall

gall unilocular; larva yellow, solitary, in several annual generations; pupation inside the gall. According to Roskam, tha larva also may occur in the capitula.

hostplants

Asteraceae, monophagous

Achillea ageratum, arabica, clavennae, clusiana, crithmifolia, millefolium, nobilis & subsp. neilreichii, ochroleuca, ptarmica, seidlii.

references

Bellmann (2012a), Bruun (2015a), Buhr (1964b), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Harris (2008b), Houard (1909a), Kieffer (1901b), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Lehmann & Hannover (2016a), Mirumian (2011a), Redfern & Shirley (2011a), Roskam (2009a, 2919a), Roskam & Carbonnelle (2015a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2007a), Skrzypczyńska (2007a), Skuhravá & Skuhravý (1994a, 1999a, 2021a: 26), Skuhravá, Skuhravý, Blasco-Zumeta & Pujade-Villar (2006a), Skuhravá, Skuhravý & Buhr (2013a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Elsayed (2014a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Stănescu (2009a), Tavares (1905a), Tomasi (2014a).