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California Jumping Gall Wasp (Neuroterus saltatorius)

The California jumping gall wasp (Neuroterus saltatorius) induces one of tiniest galls found on various white oaks. At just 1mm across, these oval "specks" hiding on the undersides of leaves are quite easy to miss. These diminutive dwellings fall to the ground in autumn, and at that point the larvae within commence impressive acrobatics that cause the galls to "jump," hence the common name.


California jumping gall wasp (Neuroterus saltatorius), highly detailed close-up of a single gall on valley oak (Quercus lobata). Focus-stacked composite of 138 exposures at 10x lifesize magnification. Solano county, California, USA.
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Crop of the previous photo, showcasing the texture on the surface of this tiny gall.
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California jumping gall wasp (Neuroterus saltatorius), gall shown with standard #2 pencil for scale. Focus-stacked composite of 55 exposures. Solano county, California, USA.
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Next Gall: Clasping twig gall wasp (Disholcaspis prehensa)



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All images copyright Timothy Boomer. All rights reserved worldwide.