Gall on oak tree ? - Andricus quercuslanigera
Manteca, San joaquin County, California, USA
September 17, 2007
Size: varying sizes up to 1/2 "
At first I thought these were caterpillars . They appear to be some type of gall on the underside of an Oak tree's leaves . Has anyone seen this before and do you know what caused this ? I found a couple of curious firefly's inspecting some of them , but that was the only insect I could find . Thanks for any comments , Beth I found it weird that these fuzzballs were only on this tree and not the others .
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