CREOSOTE BUSH GALL
Creosote bush (Larrea tridentata) frequently has leafy galls (see the ball-like structure at left side of the image). These galls are produced in response to the creosote gall midge (Asphondylia species) which deposits its eggs in the plant. The gall tissues then provide a source of nutrients for the developing larvae.
At a later time in the year the galls have matured and died. The leaves also have partly shrivelled by this stage, but they remain alive and will resume activity after rains. Go to
Creosote Bush page? |
