Oxyna parietina · margasparnė
EN · Clouded Wormwood Fly
DE · Beifuß-Bohrfliege
DE · Beifuß-Bohrfliege
The larvae bore into the stems of Mugwort (Artemisia) and is the cause of galls, usually rather weak swelling of the stem, dependent on the number of larvae (boring maggots) present.
7863