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Flange Gall Wasp (undescribed Cynipidae)

The flange gall wasp (common name by gall expert Ron Russo) is a cynipid wasp which, at the time of this writing, is still scientifically undescribed. It induces galls on the leaves of blue oaks (Quercus douglasii), each of which resembles a sphere atop a star-shaped base. These summer-generation galls are finely hairy and only 3-4mm in diameter.


Flange gall induced by undescribed or unknown cynipid wasp, highly detailed close-up of a single gall on blue oak (Quercus douglasii). Stacked and stitched micro panorama of 306 exposures at 7.5x lifesize. Vacaville, Solano County, California, USA.
GAL0120


Flange galls induced by undescribed or unknown cynipid wasp, multiple galls on a blue oak leaf (Q. douglasii). Focus-stacked composite of 101 exposures at 2x lifesize. Vacaville, Solano County, California, USA.
GAL0121

Next Gall: Fuzzy gall wasp (Disholcaspis washingtonensis)



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All images copyright Timothy Boomer. All rights reserved worldwide.