The Red Admiral (Vanessa atalanta) is a well-known colourful butterfly, found in temperate Europe, Asia and North America. The Red Admiral has a 45–50 mm (1.8–2.0 in) wing span. The species is resident only in warmer areas, but migrates north in spring, and sometimes again in autumn.
The red admiral is a familiar butterfly, and is easy to identify thanks to its striking patterning; the black forewings feature prominent red bars and white spots. The undersides of the hind wings are delicately patterned with brown and black, which provides excellent camouflage when this butterfly is roosting on tree trunks.
The larva grows to 3.5 cm in length, and occurs in a number of forms of varying colour. Dark forms are greyish-black, and have black spines and yellow patches along each side. Various pale forms also occur; they are either green or yellowish with pale spines and black markings (3).
Larval host plants include nettles from the genus Urtica, pellitory from the genus Parietaria, and hops from the genus Humulus.
The Red Admiral is considered uncommon at the GTM. Most observations are in the open habitat along Transect A. Only single observations have been made along the forest Transects B-D. This species occurs from March to May and September and October with peak abundance in April. The first record of the Red Admiral at the GTM was March 28, 2011. There have been 16 specimens observed as of December 28, 2015.
The range of Red Admirals extends around the Northern Hemisphere, from northern Canada to Guatemala in the western hemisphere, and from Scandinavia and northern Russia south to North Africa and China in the east. It is established on Bermuda, the Azores, and the Canary Islands in the Atlantic, and the Hawaiian islands in the Pacific. It has been introduced to and breeds in New Zealand as well.
Biogeographic Regions: nearctic (Native ); palearctic (Native ); oriental (Native ); neotropical (Native ); oceanic islands (Introduced , Native )
Other Geographic Terms: holarctic
Red Admirals tend to be found in moist environments such as marshes, woods, fields, and well-watered gardens. These butterflies cannot stand extreme winter cold and are forced to migrate southward during the winter months to warmer climates. During this migration they can be found in habitats ranging from subtropics to tundras. The caterpillars of this species live on the plants they feed on (see Food Habits below).
Habitat Regions: temperate ; terrestrial
Terrestrial Biomes: savanna or grassland ; forest
Wetlands: marsh
Other Habitat Features: suburban
Comments: Breeding habitat is virtually any patch of nettles, false nettles etc. in North America or much of Europe. Adults are migratory and occur in almost any habitat. They prefer somewhat wooded or shaded backyard situations. Overwintering habitats may be more specific but information is limited.
Rounded Global Status Rank: G5 - Secure
Reasons: Widespread, "weedy", holarctic species.
Category name | uncommon |
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