Short-tailed Blue
Encyclopedia
The Short-tailed Blue or Tailed Cupid (Cupido argiades) is a butterfly
Butterfly
A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

 in the family Lycaenidae
Lycaenidae
The Lycaenidae are the second-largest family of butterflies, with about 6000 species worldwide, whose members are also called gossamer-winged butterflies...

. It is found from Central Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 to Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

.

Description

The male has a violet upperside, a violet forewing with brown edging, and a violet hindwing with a brown edging of varying length. The wings have black spots, some of which have slight white edging. The tail is black with a white tip. The underside of the wings are white or brownish grey, the markings prominent or very faint. The antennae are black with white speckling on the shafts. The body is brown with a purple flush on fresh specimens.

The female has a dark grey-blue upperside, with black parts and broader edging. The undersides of the wings are like those of the male but with more stark markings. The body is like that of the male but without the purple flush.

Specimens from very dry localities in Upper Burma and from Great Nicobar Island are remarkably small and pale, with the markings on the underside, especially the subtornal ochraceous yellow patch, more or less obsolescent.

Distribution

The Holarctic region, Oriental region and Notogaean realm. The butterfly flies from May to September depending on the location.

Life cycle

The larva
Larva
A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

 is light green with a dark stripe on the back and dark streaks on the sides, with some brownish and white spots. It feeds on legume plants, including Lotus uliginosus
Lotus uliginosus
Lotus pedunculatus , Greater Bird's-foot Trefoil or Marsh Bird's-foot Trefoil is a member of the pea family ....

.

The pupa
Pupa
A pupa is the life stage of some insects undergoing transformation. The pupal stage is found only in holometabolous insects, those that undergo a complete metamorphosis, going through four life stages; embryo, larva, pupa and imago...

 is the same color as the larva or darker and black-spotted.

External links


See also

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