Beetle life stages

[saidsamir]

Coleoptera is a compound name originally given by the Greek philosopher Aristotle, meaning wings protected by mantle, and describes an order of insects, believed to have a monophyletic common ancestor with a characteristic, complete evolution. The beetles have varying sizes, ranging from 0.3 mm to 14 mm, and this does not include the tropical beetles, or the Goliath beetle, which is considered a huge insect. The head of the beetle bears a sensory horn that it mainly uses to smell, especially during mating times, in addition to sensing the surrounding environment. It has a pair of eyes, each eye is articulated, in the form of small compound eyes. Its mouth is hook-shaped, and its upper jaw is larger than the lower, suitable for biting food. . Beetles are similar in anatomical structure, although they have organs and appendages, which differ in appearance and function. Like many insects, their body is divided into three sections. The front section (prothorax) is movable, while the middle and back sections are connected without movement. The middle section bears The scale cover of the wings, and the back part bears transparent membranous wings. When flying, the two scale wings rise, so the membranous flight wings are released to the outside, so that the insect can fly. When landing, it folds its flight wings under the two scale wings, and its sheath wings close on them. Some types of beetles such as beetles of the Carabidae family I deviated from this rule, either it is without wings, or its scale wings have stuck together and it is no longer able to fly. The beetle has an abdomen in the form of a thoracic shield that has several rings from the bottom up to the opening of the genital organ. Its six legs are articulated and linked to the beetle from the chest through cavities that allow it to move freely.

Development

Beetle life stages
Beetles reproduce in full development, and one female lays tens, hundreds, or thousands of eggs during her life, and each time, the beetle is keen to lay her eggs in the appropriate place that provides food for the caterpillar when hatching from the eggs, and for example, the flour beetle, the potato beetle, and the beetle as a larva, eating the bulk Of food during the life cycle of the beetle, as the larvae tend to eat greedily when the eggs hatch and exit, some of them feed externally on the leaves of the plant, and others feed on food sources from the soil belly, or inside the plant. The continuation of the beetle in the larva stage varies from one species to another, as it ranges between short and long periods, which may reach years in some species.


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