Ctenostoma arnaudi, or Arnaud’s comb-mouthed beetle,A Treatise on the Western Hemisphere Caraboidea (Coleoptera) is a species of tiger beetle. This species is found in Ecuador,Catalogue of Life: Ctenostoma arnaudi where it is found in cloud forests on the eastern slopes of the north and central Andes.
Adults are large in size (14–15 mm) and have a shiny black to dark brown colour.The Tiger Beetles of Ecuador: Their Identification, Distribution And Natural History (Coleoptera: Cicindelidae)
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