Tag Archives: Cantharidin

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Caragana Blister Beetle

I found these oil beetles in the North Saskatchewan River valley in Edmonton on the 24 May. They were aggregating in a grassy area not far from Siberian Pea Shrub bushes (Caragana arborescens) which are the […]

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The Black Oil Beetle

With their slow movements, distended abdomens and their propensity for grass, oil beetles will forgive me for thinking that they are the insect equivalent of cows. Indeed for the short period that this specimen was kept in […]

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