Ctenostoma pusillum is a species of tiger beetle. This species is found in Guyana, French GuianaCatalogue of Life: Ctenostoma pusillum and Ecuador. The habitat consists of lowland forests.A Treatise on the Western Hemisphere Caraboidea (Coleoptera)
Adults are very small in size (5.5-6.5 mm) and have a shiny black head and thorax, while the elytra are dark brown.The Tiger Beetles of Ecuador: Their Identification, Distribution And Natural History (Coleoptera: Cicindelidae)
Subspecies Ctenostoma pusillum pusillum (Guyana, French Guiana) - tiny comb-mouthed beetle Ctenostoma pusillum minimum Navaiux, 1998 (Ecuador) - tiny-tiny comb-mouthed beetle
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