Macrolabis achilleae Rübsaamen, 1893
on Achillea
Achillea millefolium, Norway, Skibotn, Okseneset, 6.vii.2019 © Hallvard Elven: male
Achillea millefolium, Belgium, prov. Limbourg, Dal van de Grensmaas, Hochter Bampd-Herbicht, 1.ix.2019 © Carina Van Steenwinkel
the larva lies in a dark coloured (affected by digestive enzymes) cavity
spatula of the larva
gall
Yellow larvae in the flower heads, that are not conspicuously modified.
host plants
Asteraceae, (narrowly?) monophagous
Achillea millefolium.
references
Bruun, Jørgensen & Skuhravá (2012a), Gagné (2010a), Gagné & Jaschhof (2014a), Roskam (2019a), Rüsaamen (1893a), Skuhravá & Skuhravý (2005c, 2007a, 2010a, 2012a, 2021a: 26), Skuhravá, Skuhravý & Meyer (2014a).