This $1.15 stamp from the Cook Islands, issued in 1993, features the striking Limenitis populi, also known as the Poplar Admiral butterfly. The design showcases the butterfly with wings spread wide atop a bright yellow flower, capturing its dark patterned wings highlighted with orange and white markings. Part of the Endangered Wildlife series, the issue aimed to raise awareness of vulnerable species around the world.

Collectors value this stamp not only for its vivid artwork but also for its place in the Cook Islands’ thematic series dedicated to biodiversity conservation. Interestingly, the margin text mistakenly lists Vanessa atalanta (Red Admiral), though the illustration clearly depicts Limenitis populi. Such details add philatelic significance for specialists in butterfly and error-related issues.