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Photo#776201
what kind of insect pupa is on my oak tree branches? - Callirhytis seminator

what kind of insect pupa is on my oak tree branches? - Callirhytis seminator
malverne, New York, USA
Size: 1"length
i found 3 of these cocoons? pupas? on the lower branches of my oak tree. yesterday i also found a really skinny white worm on my hedge it looked like a pin worm. could this be a 2 lined chestnut beetle? or maybe these are unrelated insects. i am concerned that my very old oak has an infestation. there is a oak tree next door, that is completely defoliated. any help identifying? concerned for my oak tree.

Moved
Moved from Unidentified Galls.
Not a threat to the tree.

Moved for expert attention
Moved from ID Request.

Gall, I suspect
Resembles this one:



Others should be able to confirm/correct.

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oak gall
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