Hardwinged insects type of development, types and examples, features and characteristics

Hard winged is one of the most numerous insect detachments, which includes over 400 thousand species. Among them are known to all of God’s cows, May and Colorado beetles, beetles, beetles-carriers, weevils, and many others. Despite their significant difference in appearance, all beetles have a number of identical characteristics and features. It is worth noting that about 13.5 thousand species live in Eurasia. Among them there are pests that damage agriculture. However, there are those that benefit. For example, farmers use God’s cows, staphylin, navels, peanuts and other predatory insects as a safe biological way to deal with many pests.

Hungarian beetle

Signs of hardwinged insects

Hard winged belong to the insect detachment. Representatives of this type have a number of characteristic features:

  • Hard fading without housing and membranous rear wings;
  • soft body;
  • The front lines are enlarged, and also mobilely connected to the 2nd segment of the chest;
  • smell organs are located on the mustache;
  • elongated lower surface of the head capsule;
  • At the first segment of the chest, spikes, outgrowths, etc. are formed from the back. D.;
  • a wormshaped body shape, devoid of walking limbs (for most);
  • can have up to 10 parts of the abdomen (depending on the species);
  • rodingtype oral apparatus;
  • vision is poorly developed, so they are guided in space due to good sense of smell.
  • Thanks to the above characteristic features of beetles, it is easy to distinguish from other groups of insects. It is worth noting that the main difference is precisely in the wings, thanks to which representatives of this species got their name. In some individuals they can be underdeveloped. In this case, the insect cannot fly. Most often, such a defect is observed in weevils and the beetle.

    Smooth beetle

    Odlallya serve as a protection of the wings themselves and the soft body of the beetle. During the flight, most of the individuals are divorced to the sides. In this case, they turn into peculiar supporting planes. The rear wings are used as a propeller.

    Type of development of hardwinged insects

    The development is indirect with complete transformation (metamorphosis). The hardwinged ones are heterosexual. They lay eggs from which a larva appears. She is not at all like an adult individual. At the end of its growth, the larva becomes a fixed doll. After a short period of time, it turns into an adult beetle Imango. Based on such a transformation, it becomes clear that the hardwinged passes 4 main phases of development:

  • egg (in such a phase it is located 2-3 weeks);
  • larva (from 1 year to 6 years);
  • doll (2-3 weeks);
  • Imango.
  • For reference: the duration of the development of the larva depends on a number of factors. The basic climate is fundamental. The optimal is considered moderate. In such a climate, most individuals develop one generation in 12 months. In the south of the middle lane and in subtropical areas, up to 3 generations per year can develop at once.

    It is worth noting that among the families included in the group of hard wingers, there are exceptions. For example, nipes pass immediately 6 stages of formation. Also, the beetles also have neoice. This is a phenomenon, as a result of which the body reaches puberty at the larvae stage. Parthenogenesis is a rather rare event.

    Rhinoceros beetle

    Features of hardwinged insects

    Individuals of this group lead an active lifestyle. They are in constant food search. Based on the type of nutrition, all beetles are divided into several types:

  • phytophages use only plant foods;
  • predators feed on animal food;
  • saprophages eat rotting remains;
  • necrophages prefer carrion;
  • Coprophages feed on animal excrement.
  • A characteristic feature of some types of beetles is the creation of reserves in the cold season. They hide them in their holes.

    Among the representatives of the hardwinged there are entire families that cause serious harm to agriculture. Their larvae for several years develop in the ground, eating roots and trunks of cultivated plants. There are also individuals who eat leaves (weevils, trumpets) and the upper part of the barrel (bark beets, gold.D.).

    Convex beetle

    Hard winged are characterized by a rich set of manifestations of the instinct of concern for the offspring. This is manifested mainly in the preparation of food supplies for future larvae, as well as in caring for laid eggs.

    For reference: the ability to make sounds quite widespread among beetles. It is found in representatives of various families. Acoustic communication is an important means of communication in individuals of the same type.

    Hard winged are bugs that have a wide distribution area. There are certain families in every country. It is worth noting that they populate not only land, but also fresh reservoirs throughout the globe.

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