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Urchin Gall Wasp (Cynips quercusechinus)

The urchin gall wasp (Cynips quercusechinus, previously Antron quercusechinus) induces stunningly gorgeous summer-fall generation galls on the leaves of blue and scrub oaks. Some specimens are entirely pinkish or purple; others exhibit a little extra flair with white tips. Spring generation galls form in the leaf buds and are quite inconspicuous.


Urchin gall wasp (Cynips quercusechinus), cluster of galls on blue oak (Quercus douglasii). Focus-stacked for increased depth of field. Solano County, California, USA.
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Urchin gall wasp (Cynips quercusechinus), close-up revealing the incredible details of these diminutive dwellings. Focus-stacked for increased depth of field. Solano County, California, USA.
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Next Gall: Urn gall wasp (Phylloteras cupella)



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All images copyright Timothy Boomer. All rights reserved worldwide.