When repnits appear on the street, and this can happen as early as March, it is customary to make a wish, and, as many people claim, it comes true.
These lepidopterans belong to the family of whitefish, and their closest relatives are limonnitsa and cabbage.
What a butterfly looks like
These butterflies do not differ in large size: wingspan is from 3 to 6 cm. It has 8-pair legs, of which 5 are located in the peritoneum, 3 - chest.
The color of the wings of the male of this species is different in that it has a very noticeable yellow tint, and sometimes bright orange. In females outfit is much more modest - unremarkable light green, and in some white. On close examination, all members of the family can notice very small inclusions in the central part of each front wing on the outside. The male has one, the female has several. The rear wings are clean, they have no pattern. On the lower surface of the wings the color is pale yellow.
The body of the repnas is green, and a thin yellow line runs along the back, interrupted by a darker shade. On the sides of the line is light yellow.
Places of residence
Repnick can be found on very large territories. This includes the entire European part, including the Mediterranean, and Asian regions (except the southern parts), as well as the south of Siberia, the regions of the Caucasus and North Africa.
Comfortable most repnits live in places where there are many shrubs and woody thickets. But, if it is too dense forest, then it deters these butterflies, as they prefer open spaces. Because of their large accumulation can be found in the meadow, forest edges. They settle down and near the sea. But perhaps their most favorite places in the fields and gardens, especially if cabbage is growing there, are the greatest delicacy of these butterflies, which are pests of cultivated plants.
If repnits have chosen a place to live in mountainous areas, then it usually does not exceed more than 2,000 meters above sea level.
Repnits are diurnal. Of all the Lepidoptera, they are the most resistant to cold. Proof of this is the fact that they are still active in October, and they can be seen everywhere, and in March they again delight people with their flights, informing them that the frost has ended, and again it is warm.
Reproduction repn - bisexual. If the male flutters, making intricate pas, this means that the marriage time has come, and it is time to attract a partner to play offspring. After mating, it is time to lay eggs.
They can postpone their females one by one. They are kept on the leaf due to gluing to the leaves or stalks. And although all the eggs are at a distance from each other, they can often be up to 200, but it happens that the number reaches 500.
Recognize these small eggs by color with a very pale yellow, fawn or white shade. They are oval in shape, and more elongated at the edges. The development period is not more than a couple of days.
In May days, rarely in June, caterpillars appear. Their body has no hairs, a body with a smooth structure. This stage lasts about a month. During this time, the caterpillar feeding is not overkill: they eat only the leafy part of the plants, the most appetizing.
The caterpillar development takes about a month, and during this time it replaces five ages. At this time, lives on the outer part of the leaves. If during this period he feels any danger, then he raises the front part of the body, but at the same time he pulls in his head. The menacing posture is complemented by a change in body color. A bright red color appears, plus the caterpillar can release a caustic liquid.
Pupae appear in July. They can attach to any object, as long as the surface is hard. Covered with a pale green or gray shell with dark patches, sometimes with a yellowish-dirty shade. From the enemies of the pupa guard the sharp thorns, located on the back and sides. Hibernate already in adulthood.
Adults feed on the fact that they collect nectar from a variety of plants.
Harm to cultivated plants
The most severe damage to cultivated plants can cause repnits caterpillars, if they settled in the garden. Their cabbage is especially attractive - both cauliflower and white cabbage, as well as radish and turnip, rutabaga and horseradish. But also wild herbs become objects of their numerous feasts. This is rezeda, shepherd's purse and other plants.
First, the caterpillars eat the very edges of the leaves, leaving a gluing sclera that spreads over the entire surface. Then he gets to the head, gnawing a stroke in it and leaving a discharge. As a result, the rotting of the vegetable begins. Because people come up with various methods, how to deal with such a pest.