Tag Archives: Pin Oaks

The Upper Left-Hand Brick

NOTE:  This posting has an error!   The apple-like oak leaf gall is caused by a (gasp) midge, not a wasp!  The leaf gall of the wasp is an elongated gall along the veins of the leaf.  I will update the … Continue reading

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A Lotta Damn Gall(s)

  (NOTE: Full confession—I goofed!  The following article is partially incorrect! The apple-like galls are NOT caused by one of the generations of a cynipid wasp, but rather by Polystepha pilulae, a midge, a mere dipteran, not a noble hymenopteran.  The … Continue reading

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