Popular types of caterpillars: structure, habitats, reproduction


How long do peacock butterflies live?

True, in Friedrichsruhe you can also see butterflies typical of the middle zone. — The peacock eye is a unique European butterfly that lives for about 10 months and overwinters in basements or hollows of trees.

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How many limbs does a caterpillar have?

Most species of caterpillars have only three pairs of true legs, also called pectoral legs. All other limbs that can be seen on the larva are false. True and false caterpillar legs have certain differences, but are similar in structure. Like any other insect, their limbs consist of the following parts:

Thoracic legs of a caterpillar

The real legs of the caterpillar are called pectoral legs because of their location. Each thoracic segment of the larval body has one pair of true limbs. They are poorly developed and play a smaller role in movement compared to the abdominal ones.

There are claws at the ends of the thoracic limbs. The length and shape of these claws can vary significantly depending on the type of caterpillar.

Abdominal legs of a caterpillar

Caterpillars have legs.

Most species have 5 pairs of false limbs. They are located on segments 3, 4, 5, 6 and 10 of the caterpillar's body. There are special hooks on the abdominal legs. They help the larva to hold firmly on various vertical and horizontal surfaces, and can be arranged in a circle or in rows.

At the edge of the abdominal leg there is a movable sole with claws. It can retract inward or bulge outward. The sole of the larva can be of two types:

  • rounded. The hooks on such a sole are located in a circle, and the muscle that activates it is located in the center;
  • reduced. The outer part of the sole of this type is almost undeveloped. The hooks are attached to its inner edges, and the muscles to the outer edges. The outer edge of the sole may also be significantly sclerotized.

Different caterpillar legs.

Habitat

The limited mobility of caterpillars does not facilitate their movement over long distances. In most cases, insects lead a terrestrial lifestyle, but there are also species that live in water.

All caterpillars are divided into two main groups: hidden and leading a free lifestyle. The former practically do not appear on the surface and live in the bark or in the ground away from sunlight. The latter are found on plants and are active during the daytime.

Habitat

In nature, many insects and animals feed on caterpillars. This is due to their high protein content. Therefore, the color of insects living on plants has a camouflage color, which allows them to blend in with the surface of the leaves. Poisonous butterfly larvae are characterized by a frightening bright body shade.

Among those who eat caterpillars:

  • wasps;
  • spiders;
  • birds;
  • reptiles.

To protect themselves from attacks from predators, some butterfly larvae are capable of producing a whistle and protruding from their body a fork-shaped gland of a red-orange hue, which secretes mucus with a pungent odor.

Types of caterpillars in which the number and arrangement of legs differs from the usual

The order of butterflies includes a huge number of species and their caterpillars differ significantly in appearance from each other. The number and arrangement of larval limbs differs especially among the following representatives of Lepidoptera.

Moths or surveyors

This species has only two pairs of false legs. They are located on the 6th and 10th segments of the larval body. This family got its name due to its special method of movement. Caterpillars “walk” in the same way that people measure length with a span using their hand.

Scoops or bats

False limbs, located on 3-4 body segments, can be very poorly developed.

Primary toothed moths

The caterpillars of these butterflies have 3 additional pairs of abdominal legs. In total, the larva has 11 pairs of limbs.

Megalopygids or flannel moths

The larvae of this species have 7 pairs of false legs, which are located on segments 2-7 and 10.

Miners

Small caterpillars of this family of butterflies usually live inside plants and have completely reduced both thoracic and abdominal legs.

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Life cycle

In their development, all representatives of the order Lepidoptera go through 4 stages: egg, caterpillar, pupa, butterfly. After mating, female insects lay eggs, which can develop from several days to months. The duration of the period depends on temperature conditions. The caterpillar easily gnaws through the shell of the egg. Under unfavorable weather conditions, the larva overwinters in the egg and only when spring comes does it emerge. Hungry caterpillars often eat the remains of their “shelter.”


Caterpillars

How long do caterpillars live is a question that can be found quite often on the Internet. The duration of this phase of insect development depends on the species and can last several days or years. This is due to the fact that northern butterflies hibernate without completing their development cycle.

Interesting!

The moth, which lives in harsh northern regions, can remain in the caterpillar stage for about 14 years.

The caterpillar has several phases of development. They are characterized not only by changes in the color and size of the insect, but also by certain structural features. During its life, an insect undergoes a certain number of moults, which depend on its membership in a particular biological species. Typically, the larva molts 4 times; for representatives of certain species, this number can vary from 5 to 7. Under unfavorable external conditions, the growth period of the insect is prolonged, and the number of molts increases.

On a note!

The clothes caterpillar can molt 4 or 40 times.

Before this process begins, they stop feeding, become motionless and hide in secluded places. Their skin stretches and their head seems to shrink in size. Having shed the old shell, the caterpillar can eat it. Having gone through all stages of molting, insects move on to a new life stage.

Pupation of the caterpillar can occur in inaccessible places or directly on the plant on which the larva fed. Under certain conditions, insects travel considerable distances in search of protected places. Later, a butterfly emerges from the pupa.

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