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Photo#1159711
Mystery insect inside a Valley Oak gall

Mystery insect inside a Valley Oak gall
Trail in Stanford University Campus, Palo Alto County, California, USA
October 25, 2015
Size: ~12 mm
This larva would stick its head up from an emergence hole in the gall, sometimes. It was quite a disconcerting sight.
I dissected the gall and found it inside a tunnel. It could walk rapidly in both directions.
The debris are frass found with it. Presumably its own, but there were other gall inhabitants. For more about this gall, start here

Moved
Moved from Snakeflies.

Moved
Moved from ID Request.

Snakefly larva…
See reference here.

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