Ctenostoma ichneumoneum is a species of tiger beetle. This species is found in Paraguay and Brazil,Catalogue of Life: Ctenostoma ichneumoneum where it inhabits the southern Atlantic Forest.
Adults are brachypterous.A Treatise on the Western Hemisphere Caraboidea (Coleoptera)
Subspecies Ctenostoma ichneumoneum ellipticum Naviaux, 1998 (Paraguay, Brazil) - ellipsis-marked comb-mouthed beetle Ctenostoma ichneumoneum ichneumoneum (Brazil) - wasp-like comb-mouthed beetle
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