PLANT GALLS

Galls on creosote bush, formed by the
creosote gall midge (Asphondylia sp.). A young
gall is shown on the left, and a mature, dead gall on the
right.

Old gall on sagebush

Young gall on sagebush

small galls on leaves of
triangle-leaf bursage

Gall on saltbush

Saltbush gall broken open to show
separate chambers where grubs develop (click on the image
to see a larger version showing one grub at bottom right)

Oak "apple" gall
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