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Pyrrhocoris
firebugs, cotton stainers
Pyrrhocoris is a genus of true bugs in the family Pyrrhocoridae, commonly known as firebugs or cotton stainers. The genus contains approximately eight described species, with Pyrrhocoris apterus (the firebug) being the most extensively studied. Species in this genus are primarily distributed across the Palaearctic realm, with some records from North America and East Asia. The genus is notable for its gregarious behavior and has served as an important model organism in studies of insect behavioral ecology, developmental plasticity, and wing polymorphism.