Il colore di questa farfalla è bianco , risulta sperco perché la foto è scattata in controluce con le ali illuminate dal sole . The color of this butterfly is white, is dirty because the photo was taken with the wings against the bright sun. La Pieride del biancospino (Aporia crataegi LINNAEUS, 1758) è un lepidottero della famiglia Pieridae. The Pieria of hawthorn (Aporia Crataegi Linnaeus, 1758) is a moth of the family Pieridae. Adult The wing ribs are recognized and distinctly black in males and females are brown (often larger than males). The tips of the wings are slightly scaly, especially in females. The wings tend to become transparent as they age increases. The ribs at the base of the wings, both front and rear are reminiscent of the "wings reduced. The wingspan ranges from 6 to 7.5 cm Adults can take large amounts of liquid in the moist soil. Eggs The eggs are found between June and July, in clusters located on the upper leaves. Detectable from July to May the following year, these caterpillars, gregarious, often spend the winter in a silk wrap. Are gray and hairy, with a black back features large reddish-brown lines. Pupa The pupa or chrysalis is yellowish and succinct on host plants. Distribution and habitat It is found in places flowers in the countryside, especially on hills. At one time you could see even in low-lying areas, but in recent decades have witnessed a trend towards phasing out areas of higher altitude. It is a Palearctic species, widespread throughout central and southern Europe, Africa, Mediterranean and temperate Asia to reach the coasts of Korea and Japan. Conservation It is considered threatened in the Netherlands, Luxembourg vulnerable (which is probably extinct) and Norway. Is protected by Austria and Luxembourg. Not present in the British Isles, is receding gradually from northern France. It is well distributed throughout the peninsula and Sicily, is absent in Sardinia and Corsica Good day and good weekend Thanks for the comments and the favourites of previous image