Chequered Skipper

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iChequered Skipper

Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Hesperioidea
Family: Hesperiidae
Subfamily: Heteropterinae
Genus: Carterocephalus
Species: C. palaemon
Binomial name
Carterocephalus palaemon
(Pallas, 1771)

The Chequered skipper or Arctic Skipper Carterocephalus palaemon, is a butterfly of the Hesperiidae family.

Appearance

This butterfly has a wingspan of 29 to 31 mm. The uppersides are a dark brown with a dusting of orange scales at the base of the wings and golden spots, giving it its English name of chequered Skipper. The basic pattern on the underside is similar but the forewings are orange with dark spots, and the hindwings are russet with cream spots rimmed in black. The sexes are similar although females are generally slightly larger.

Distribution

It is widely distributed in northern and central Europe although not found in Italy, Portugal, Ireland, Denmark and only found very locally in Spain, the UK and Greece. Its range extends across Asia and Japan and also into North America, where it is known as the Arctic Skipper, across southern Canada and the parts of northern United States including New England, the Great Lakes area and the north western states as far south as northern California. It is generally considered a woodland butterfly and breeds in and around damp woodland, favouring clearings and woodland paths and seems to have a particular attraction to blue woodland flowers.

UK Chequered Skippers

The Chequered Skipper has been extinct in England since 1976 but has stable populations in western Scotland. Attempts to reintroduce the butterfly to England were started in the 1990s. It was previously quite widespread in the midlands of England with isolated populations as far afield as Devon and Hampshire. It is thought that the cessation of coppicing in English woodlands is the main cause of its extinction. It was only discovered in Scotland in 1939 where it is found grassland on the edges of open broad-leaved woodland.

Lifecycle and foodplants

The eggs are laid singly on tussocks of grasses. In Scotland most eggs are laid on Purple Moor Grass Molinia caerulea. In England most foodplant records were on False-brome grass Brachypodium sylvaticum but it may have used other Bromus spp as it does in continental Europe. In the USA Purple Reedgrass Calamagrostis purpurascens is a noted foodplant. They are laid in June or July and take about 10 days to hatch. On hatching the larvae make shelters from rolled grass blades tied with silk from where they emerge at night to feed. In the autumn they construct a hibernaculum by drawing together several blades and the fully grown larvae spend the winter here. Before hibernation they are a pale green, after hibernation they are a pale beige. Upon waking the following spring they make no attempt to feed and will rest on a blade of grass for up to a week before pupating. The pupae are a pale buff colour with dark lines running along the length and are well camouflaged. About five or six weeks later the adult emerges and can be seen on the wing between May and July depending on the latitude (later further north). A very active butterfly, it needs a lot of nectar and sunshine.

[edit] References and external links

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