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Tag Archives: Curculio glandium

Weevil: Curculio glandium

01 Friday Aug 2025

Posted by sconzani in insects

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Tags

acorn weevil, British weevils, Curculio glandium, weevil, weevil larvae in acorns, weevil on Oak tree

How cute is this little weevil?

This is Curculio glandium, also known as the Acorn weevil because it lives in Oak trees and the female of the species uses her long snout, her rostrum, to drill a hole in to the middle of an acorn, in which she then lays her egg using her ovipositor. It seems a difficult place in which to live but the weevil larva (sometime there’s more than one larva in each acorn) feeds happily inside the acorn through the cold months of the winter. I’m always a little dubious about information from Wikipedia but the entry there (scientific papers are referenced) says the ‘larvae are freeze avoidant, preventing their internal body fluids from freezing during the winter’. Presumably that means they have their own version of anti-freeze. The larvae emerge in the Spring to pupate, and the life cycle begins all over again.

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sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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