Calycomyza artemisiae

(Kaltenbach, 1856)

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Hosts in Great Britain & Ireland : Artemisia and Eupatorium.

Mine : A pale whitish blotch, usually upper-surface. The mine starts with a short corridor but this is usually enveloped by the blotch. No feeding lines present. The mine can resemble that of the micro-moth, Leucospilapteryx omissella. However, that mine turns purple as it ages.

Pupation : Outside of the mine.

Puparium : Reddish-brown.

Phenology : Bivoltine. Mines can be found from June until the Autumn

Notes : Buhr (1964a) states that in Germany, a high proportion of mines present on Eupatorium are lower-surface.