Ctenostoma immaculatum, the non-spotted 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 immaculatum where it has only been recorded from the western slope of the Andes mountains at a single location in Chimborazo Province.
Adults are medium-sized (11 mm) and are dark reddish-brown in colour.The Tiger Beetles of Ecuador: Their Identification, Distribution And Natural History (Coleoptera: Cicindelidae)
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