This Dagger species was sitting on a fence post barely three feet in front of us and despite spending twenty minutes trying to photograph a parisitoid wasp that repeatedly passed over it, we failed to notice it until much later.
Insight into Dark Dagger (Acronicta tridens) and Grey Dagger (Acronicta psi): these moth species are common in the UK but require close examination under a microscope to determine which species they are.
However, the caterpillars of the two species are very different.
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