Cilantro and sulfur: Meeting the shield bug Pygoda polita

Pygoda polita is a South American species of shield bug (Pentatomidae) with a rich taxonomic history. Originally described as Pentatoma polita in 1825 by entomologists Amédée Lepeletier and Jean Guillaume Audinet-Serville, it underwent several reclassifications before being assigned to the genus Pygoda. It is distinguished from related Edessa bugs by its short, acute pronotal angles and specialized genital anatomy. Like many stink bugs, it possesses a broad, shield-like body, a prominent triangular scutellum, and piercing-sucking mouthparts. When threatened, metathoracic glands on its underside deploy a sharp, oily chemical cocktail—a pungent odor often described as a mix of intense cilantro, burning sulfur, and rotting vegetation. I spotted this impressive bug in a lovely park in Tena, Ecuador. It was playing hide-and-seek deep between the leaves, which unfortunately made getting a tack-sharp photo quite a challenge!

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