Macrolabis achilleae Rübsaamen, 1893

on Achillea

Macrolabis achilleae on Achillea millefolium

Achillea millefolium, Norway, Skibotn, Okseneset, 6.vii.2019 © Hallvard Elven: male

Macrodiplosis achilleae: larva in capitulum of Achillea millefolium

Achillea millefolium, Belgium, prov. Limbourg, Dal van de Grensmaas, Hochter Bampd-Herbicht, 1.ix.2019 © Carina Van Steenwinkel

Macrodiplosis achilleae: larvae in capitulum of Achillea millefolium

the larva lies in a dark coloured (affected by digestive enzymes) cavity

Macrodiplosis achilleae: larval spatula

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).