Summer Turquoise Blue

Polyommatus dorylas

Polyommatus (Plebicula) dorylas, the turquoise blue, is a butterfly of the family Lycaenidae. It is found in southern Europe, Asia Minor, the Ural Mountains, Caucasus and Transcaucasia. Its wingspan is 15–17 mm. The butterfly's common name comes from the dazzling bright blue colour of male's wings. The larvae feed on Anthyllis vulneraria. The butterfly flies from May to September in two generations. Habitats include flowery meadows in rocky areas at 500–2000 m.

Summer

Summer or summertime is the hottest and brightest of the four temperate seasons, occurring after spring and before autumn. Starting on the summer solstice, daylight hours are the longest and darkness hours are the shortest, with day length decreasing as the season progresses after the solstice. In the Northern Hemisphere, summer is usually defined as starting on June 21 or 22, and ending on September 22 or 23; and in the Southern Hemisphere, as the period between December 22 or 23 and March 20 or 21.

Turquoise

Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.

Blue

Blue is one of the three primary colours in the RGB (additive) colour model, as well as in the RYB colour model. It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

summer

Noun

1. One of four seasons, traditionally the second, marked by the longest and typically hottest days of the year due to the inclination of the Earth and thermal lag. Typically regarded as spanning either the period between the summer solstice to the autumnal equinox, or the months of June, July, and August in the Northern Hemisphere and the months of December, January and February in the Southern Hemisphere.
2. year; used to give the age of a person, usually a young one.

Verb

1. To spend the summer, as in a particular place on holiday.

turquoise

Noun

1. A sky-blue, greenish-blue, or greenish-gray semi-precious gemstone.
2. A pale greenish-blue colour, like that of the gemstone.

Adjective

1. Made of turquoise (the gemstone).
2. Having a pale greenish-blue colour.

blue

Adjective

1. Of a blue hue.
2. Depressed, melancholic, sad.

Noun

1. The colour of the clear sky or the deep sea; the colour midway between green and violet in the visible spectrum and one of the primary additive colours.
2. Anything coloured blue, especially to distinguish it from similar objects differing only in colour.