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Curculio villosus boring into an oak apple Curculio villosus boring into a gall (&quot;oak apple&quot;) on Oak caused by the gall wasp Biorhiza pallida, to later insert an egg into the gall.<br />
This is an example of &quot;secondary&quot; usage of the gall body, by another organism than the one causing the gall in the first place.  Biorhiza,Biorhiza pallida,Coleoptera,Curculio,Curculio villosus,Curculionidae,Cynipidae,Hymenoptera,Oak,Oak apple,gall Click/tap to enlarge PromotedSpecies introCountry intro

Curculio villosus boring into an oak apple

Curculio villosus boring into a gall ("oak apple") on Oak caused by the gall wasp Biorhiza pallida, to later insert an egg into the gall.
This is an example of "secondary" usage of the gall body, by another organism than the one causing the gall in the first place.

    comments (5)

  1. So neat! Posted 9 months ago
    1. Yes, I shot this image in 2007, very much at the beginning of my entomology hobby and at the time I had no idea yet about the relationship between the weevil and the gall (found that out after photo-IDing it). Lucky shot hence, but a very nice mini documentary :o) Posted 9 months ago, modified 9 months ago
      1. So cool that you were able to go back to it after so many years with more knowledge on the relationship! Posted 9 months ago
        1. Still learning every day (luckily) :o) Posted 9 months ago
          1. Yessss! Posted 9 months ago

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Curculio villosus Fabricius, 1781 is a small weevil closely related to the more well known Acorn weevil (Curculio glandium) and Nut weevil (Curculio nucum) but bores its eggs not into the fruit body of the tree, but in gals on oak caused by the sexual generation of the gal wasp Biorhiza pallida. The larva of the wasp usually perishes because of food competition.

Similar species: Beetles
Species identified by Pudding4brains
View Pudding4brains's profile

By Pudding4brains

Public Domain
Uploaded Nov 6, 2018.