The cockchafer (or maybug) is a widespread bug in Europe. Its larvae, known as chafer grubs are considered a pest.
cockchafer, beetle, complete metamorphosis, Beetles, chafer grub, hard outer wing, arthropod leg, chitin layer, chitin, abdomen, thorax, animal, insect, arthropod, insects, arthropods, biology
The cockchafer, also known as maybug, is widespread in Europe. Its average length is 2.5–3 cm (1–1.2 in). Both males and females have antennae, they can be distinguished by the number of lamellae on the antennae. While females have 6 of these, males have 7.
- - It starts in the brain and runs along the abdomen. The ganglia of the ventral nerve cord contain neuron cells and are joined by bundles of nerve fibers.
- - Insects have an open circulatory system filled with hemolymph. It is circulated by a tube that extends along almost the entire length of the body, from the heart located in the abdomen to the head of the insect, where it flows into the body cavities. It re-enters the tube through openings along its sides. Its function is to transport nutrients and waste. It does not transport breathing gases, this is the task of the trachea system.
- - They form the excretory system of insects. The tubules filter the hemolymph filling body cavities and release the filtrate into the intestine. There, the useful nutrients (water, sugar, etc.) are absorbed and get back into the hemolymph, waste and toxins are excreted.
- - Malphigian tubules filter the hemolymph filling body cavities and release the filtrate into this body part. Here the useful materials (water, sugar, etc.) are absorbed and get back into the hemolymph, wastes and toxins are excreted.
The cockchafer, also known as the maybug, is widespread in Europe. Its average length is 2.5–3 cm (1–1.2 in). Both males and females have antennae, they can be distinguished by the number of lamellae on their antennae. While females have 6 of these, males have 7.
Larvae, known as chafer grubs, develop in the soil and feed on the roots of plants, thus they may cause serious damage in agriculture. Depending on the climate, larvae develop into pupae in the summer of their 3rd–5th year. After 6 more weeks, an adult beetle emerges from the pupa, overwinters in the soil, and then works their way to the surface in April or May.
As with other insects, the body of the cockchafer consists of 3 main parts: the head, thorax and abdomen. The head contains the antennae, which serve as chemical sensory organs, as well as the chewing mouthparts and the compound eyes. The thorax contains 3 pairs of legs and 2 pairs of wings. The forewings of beetles are hardened wings (elytra) that protect them, while the hindwings are membranous wings, used for flight.
With the example of the stag beetle we demonstrate how insects' muscles function, how insects fly and how they reproduce.
Based on their life cycle, insects can be grouped into three categories: ametabolous, hemimetabolous or holometabolous insects.
Honeybees produce a sweet and nutritious substance, honey.
The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
An ant colony consist of a queen, male ants and workers.
The poisonous bite of the Chilean recluse spider poses a serious threat to human health.
Several analogous types of eyes have developed independently through convergent evolution.
A type of large freshwater crayfish widespread in Europe.
This animation demonstrates the anatomy of spiders through the example of a common European species.
One of the best known species of spiders, often kept as pets. Its bite is not fatal for humans.
While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.
Tardigrades can survive in extreme environments, they can even stay alive in outer space.