Strange beast

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Looks like the head of a big bull ant!
Pretty cool find.
 
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Google says its a iridescent blue beetle
 
Interesting life cycle

Oil beetles have an amazing life cycle, intricately linked to that of solitary bees. After hatching, oil beetle larvae (known as triungulins) make their way onto a flower head where they lie in wait for a solitary bee. Using specialised hooks on their feet, they attach themselves to the back of a visiting female bee and when the bee returns to its underground nest, the triungulin disembarks and continues its development underground, eating through the bee’s stores of pollen and nectar. The following year, it emerges as an adult oil beetle ready to start the life cycle all over again.
 
I did have some oil beetles around my apiary a few years ago, but I haven’t seen them recently. Shame, they’re quite striking. Also means there are solitary bees around.
 

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