Euplagia quadripunctaria

Jersey tiger
Red form
Yellow form
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Erebidae
Subfamily: Arctiinae
Genus: Euplagia
Species:
E. quadripunctaria
Binomial name
Euplagia quadripunctaria
(Poda, 1761)
Synonyms
  • Phalaena quadripunctaria Poda, 1761
  • Phalaena hera Linnaeus, 1767
  • Callimorpha quadripunctaria (Poda, 1761)
  • Callimorpha hera (Linnaeus, 1767)

Euplagia quadripunctaria, the Jersey tiger, or Spanish flag, is a diurnal moth of the family Erebidae. The species was first described by Nikolaus Poda von Neuhaus in 1761. The adult wingspan is 52–65 millimetres (2.0–2.6 in), and they fly from July to September, depending on the location. They tend to fly close to hemp-agrimony, Eupatorium cannabinum. In most of their range, the aposematic adults have red underwings. In the northwest part of their range, the adults are polymorphic for underwing colour, being variously red, orange, or yellow.

The larvae (caterpillars) are polyphagous, feeding from September to May on nettles (Urtica), raspberries (Rubus), dandelion (Taraxacum), white deadnettle (Lamium), ground-ivy (Glechoma), groundsel (Senecio), plantain (Plantago), borage (Borago), lettuce (Lactuca), and hemp-agrimony (Eupratoria). The insect overwinters as a small larva.

Large groups of adults of subspecies E. q. rhodosensis can be found on occasion aestivating (sheltering from the summer heat) in Petaloudes, on Rhodes, in a place that has become known as the Valley of the Butterflies.