Top 20 Most Common Insects in Czechia

Named for its striking pattern, european firebug is often described as the "firebug." It is known to congregate in large aggregations reaching as many as one hundred individuals at a time, particularly while still immature. Because they feed upon the seeds of lime trees, clusters of mating individuals can often be found at the bases of these trees in late spring.

The silver-washed fritillary (Argynnis paphia) is a beautiful, orange butterfly that is covered in black spots. It earns the "silver-washed" portion of its name through silver streaks you can find running along with it. It produces a scent using "scales" that allows it to distinguish itself when females are trying to locate it.

The beetles are 8 to 10 millimeters (males) or 10 millimeters (females) long. On the neck shield, which protrudes above the head, they have two large, transparent window stains through which the dark complex eyes shine. The males have a similarity to the large firefly (Lampyris noctiluca), whose neck shield has no window stains. Males and females of Lamprohiza splendidula can be easily distinguished from one another: the female has only extremely short wing stubs, so that the abdominal segmentation is visible and therefore looks like a larva. The female body is cream-colored and translucent, so that some organs shine through. This transparency of the body enables the light to shine through from the underside of the body, where the luminous organs are located. In the evening, the light of the flightless females living on the ground can attract the males. The German name glow-worm goes back to the larval-like shape and the luminosity of the female. The males have fully trained and functional wings. Her body is flattened laterally, the neck shield and forewings are gray-black. They stand on the sides of the body and cover the legs during the day. In contrast to the females, the males have only two light organs on the abdominal side of the abdomen, which stand out due to their cream-colored color. The males of the Little Firefly are the only nocturnal animals in Germany that can fly and shine. Eggs, larvae and pupae also have luminous organs.

Western honey bee（Apis mellifera） is the most common species of honeybee in the world. Among the first domesticated insects, its cultural and economic impact on humanity has been vast and far-reaching, providing honey, wax and its services as a pollinator. Western honey bee faces challenges worldwide, such as colony collapse disorder, and populations are thought to be decreasing.

Melanargia galathea has a wingspan of 1.8–2.2 in. In these medium-sized butterflies the upper side of the wings is decorated with white and gray-black or dark brown markings, but it is always gray-black or dark brown checkered in the basal and distal areas. The underside is similar to the upper side but the drawings is light gray or light brown. On the underside of the hindwings is present a row of gray eye spots. The males and the females are quite similar, except that some females may have a yellowish nuance on the underside of the wings. The larvae are a lime-green colour, with a dark green line running down the middle of their back. The caterpillars are about 3 cm long. They are green or yellow with some lighter and darker narrow longitudinal lines. The head is always light brown.

The map butterfly is unusual in that its two annual broods look very different. The summer brood are black with white markings, looking like a miniature version of the white admiral and lacking most of the orange of the pictured spring brood. The eggs are laid in long strings, one on top of the other, on the underside of stinging nettles, the larval food plant.

The silver, comma-shaped marked on the butterfly’s wings give it the common name the Comma. It is a common butterfly in southern Britain that was once on the verge of extinction in the 1930s. The butterflies are often found at the edge of forests, close to meadows with plenty of nectar-rich wildflowers.

Large white (Pieris brassicae) is visually similar but quite larger than its close relative P. rapae. It lays its eggs on food plants such as cabbages – the origin of its common name – leading to many farmers' classifying this species as a pest.

The painted lady is a migratory butterfly that spends part of the year in Northern Africa and then migrates to Europe during the warmer months. Although the adults feed on nectar from flowers, the larvae feed on the leaves of nettles and thistles.

Aphantopus hyperantus is a medium-sized butterfly with a wingspan of up to 3.5 - 4 cm . The wing upper and lower sides are solid brown with small, yellowish-rimmed eyespots. The newly emerged ringlet has a velvety appearance and is almost black with a white fringe to the wings. The number and size of the eyespots is variable, they may be missing on the upper wing surface. The eggs are pale yellow when first laid, but become pale brown.The caterpillars are about 2.5 cm long. They are gray or light reddish brown and have dark, reddish brown and very fine dots. Dorsally there is a dark longitudinal line, which is widened at the segment boundaries. Toward the rear, this line is more intensely colored. The head is darker and has several faint longitudinal stripes.