The map shows the distribution of adults identified by dissection or as larvae.
Found in a range of habitats.
Overwinters as a pupa with the adults coming readily to light.
Note Adults of Dark and Grey Daggers cannot be distinguished other than by dissection but the larvae can be separated with care.
In Dark Dagger larvae the hump is smaller than on Grey Dagger; there are three red dashes on each segment whereas there are two on Grey Dagger and the warts on each segment are white whereas on Grey Dagger they appear as dark spots (Roy Leverton).
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