''Ctenostoma transversum'', the transversely-marked comb-mouthed beetle, is a species of

tiger beetle Tiger beetles are a family of beetles, Cicindelidae, known for their aggressive predatory habits and running speed. The fastest known species of tiger beetle, '' Rivacindela hudsoni'', can run at a speed of , or about 125 body lengths per second. ...

. This species is found in Bolivia and Brazil, where it inhabits lowland rainforests.A Treatise on the Western Hemisphere Caraboidea (Coleoptera)
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References

{{Taxonbar, from=Q13503615 Cicindelidae Beetles described in 1998