Euplagia

Euplagia is a small but distinctive genus of tiger moths belonging to the family Erebidae, subfamily Arctiinae (formerly placed in the family Arctiidae). These moths are best known for their bold coloration and day-flying habits, which make them among the most easily recognized moths in Europe. It includes only a few recognized species Euplagia quadripunctaria, commonly known as the Jersey tiger moth and Euplagia exquisita which is found in parts of Asia Minor and the Caucasus. The wingspan is approximately 52–66 mm in E. quadripunctaria, the forewings a dark brown or blackish with creamy-white or pale yellow stripes, forming a striking contrast pattern. The hindwings are a brilliant orange or red with black spots, visible when the moth opens its wings. This bright colouration serves as aposematic (warning) signaling to predators, suggesting toxicity or distastefulness. Unlike many moths, Euplagia species are active by day but can also fly at dusk. The adults are attracted to flowers rich in nectar, especially Buddléia, Eupatorium, and thistles. Larvae feed on a variety of herbaceous plants, including nettle (Urtica), plantain (Plantago), and groundsel (Senecio). They overwinter as larvae and pupate in spring within a loose cocoon among vegetation.

Euplagia moths represent one of the most visually striking genera of the Arctiinae, combining vivid coloration, diurnal activity, and ecological adaptability. Their mix of aesthetic beauty and biological interest has made Euplagia quadripunctaria one of the best-loved moths in Europe.