Ctenostoma regium, the regal comb-mouthed beetle,A Treatise on the Western Hemisphere Caraboidea (Coleoptera) is a species of tiger beetle. This species is found in Ecuador, Peru and Brazil.Catalogue of Life: Ctenostoma regium
Adults are large in size (16–18 mm) and are almost entirely black, except for some yellow areas on the antennae.
Adults are thought to mimic the stinging ants of the Paraponera genus. They not only resemble these ants, but also have similar behaviour.The Tiger Beetles of Ecuador: Their Identification, Distribution And Natural History (Coleoptera: Cicindelidae)
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