The subfamily Coreinae (Hemiptera: Coreidae) includes species of large stink bugs that, in addition to causing discomfort to people by releasing irritating substances to the skin and eyes, can be pests of ornamental plants and agricultural crops. Recently, in areas close to plantain crops in Finca 65 – Changuinola, Bocas del Toro (9°25'50” N 82°31'01” W, 11 m asl), a black and orange bug was found, so the objective was to identify the species. Specialized literature was reviewed, and a specialist was consulted to confirm the identification. The results reflected that the insect in question corresponds to Thasopsis formidabilis (Distant, 1893) (Hemiptera: Coreidae: Coreinae), a species reported for the province of Chiriquí and other countries like Costa Rica and Honduras, so this finding expands the known distribution. of the species for Panama, specifically in the western region of the country.
