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great grig

Cyphoderris monstrosa

image of Cyphoderris monstrosa
Male (ventral surface), Monck Provincial Park, near Merritt, British Columbia, Canada.
Photograph by G. K. Morris, University of Toronto at Mississauga, used by permission.

Morris notes that the spider-like black markings on the venter become visible when the insect throws itself onto its back and makes a defensive display that includes sound generation.