20 Artemisia arborescens covered with galls 21 female of Rhopalomyia protrahenda next to apical leaves of the host plant covered with reddish mass of eggs 22 galls, detail 23 dissected gall showing a pupa 24 exuviae protruding from a gall 25 adult emergence hole 26 detail of a leaf gall showing the chamber and thin wall 27 pupa, lateral view 28 pupa frontal view 29 female emerging from gall.