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Cockroaches are flattened, black-brown in color, and usually medium in size. The antennae are filamentous and the compound eyes are well developed. The forewings are leathery, the hindwings are membranous, and the fore and rear wings are basically the same size, covering the dorsal surface of the abdomen.
Cockroaches are one of the oldest insects on the planet, having lived in the same era as ancient creatures such as dinosaurs, trilobites, and dunkles. It was even more than 100 million years before the first dinosaur on land was born.
According to fossil evidence, primitive cockroaches appeared on Earth about 400 million years ago in the Silurian period. The fossils of cockroaches that we have found or those found in coal and amber have become more and more resilient and have flourished to this day, widely distributed in all corners of the world.
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The larvae of cockroaches resemble adults in shape, with small bodies and no wings. The larvae of cockroaches are usually elongated, milky white, and translucent. After the nymph has its last molt, it grows wings and grows into an adult.
Newly molted nymphs and newly emerged adults are also white, with a gradual darkening of color. Therefore, in the population, cockroaches can be seen to change due to environmental conditions as well. Nymphs that have just hatched from the egg sheath are clustered around the egg sheath and are white in color.
The larvae of cockroaches resemble adults in shape, with small bodies and no wings. The larvae of cockroaches are usually elongated, milky white, and translucent. After the nymph has its last molt, it grows wings and grows into an adult.
Newly molted nymphs and newly emerged adults are also white, with a gradual darkening of color. Therefore, in the population, cockroaches can be seen to change due to environmental conditions as well. Nymphs that have just hatched from the egg sheath are clustered around the egg sheath and are white in color.
After that, the color gradually darkens and spreads. The nymph is shaped like an adult, but the nymph is small, has no wings, and has immature sexual organs. The development of Linquan is slow.
Multiple molts and gradually grows, and the number of antennae and tail segments also increases with age.
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Is this What is a cockroach?
Small cockroaches: Newborn baby cockroaches are white all over, small, and wingless. The insects that have just hatched from the egg sheath are gathered around the egg sheath, which is white, and then the color gradually darkens, and spreads out to move, the nymph shape is similar to that of an adult, but the body is small, wingless, and the sexual organs are immature.
Nymphs develop slowly. It must undergo multiple molts to grow gradually, and the number of antennae and tail whiskers also increases with age. After the last molt, it grows wings and feathers into adults.
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Dragon lice (water cockroaches). Dragon lice (water cockroach), also known as water turtle, is an aquatic insect, a general term for the large and small species of the dragon lice family, it has a huge family, there are about 160 species in our country alone, the most common is the Japanese sucker dragon lice, as well as the black dragon lice, the Oriental three-star dragon lice, etc.
Morphological characteristicsThe body is large, centimeter long, oval, flat, shiny, and some species have stripes or dots. The whole body is black, the sheath side margin is yellow, and the black part flashes green. The compound eyes are located at the back of the head, immediately against the anterior edge of the chest.
The basal ganglia of the forefoot and midfoot are small, the hind foot is developed, the side is flattened like an oar, the coat is long, the basal segment is broad, the left and right are in contact, and the tarsal segment is 5 segments, which is suitable for swimming.
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Cockroach larvae are about 5 mm in size. Cockroach egg stage: The eggs are narrowly elongated, milky white, translucent, and arranged in two neat rows in the egg sheath.
The head of the embryo is slit towards the hole. When hatching, the nymph pushes upwards, allowing the closed egg sheath to crack open and escape. The number of eggs in the egg sheath varies according to the species, that is, the number of eggs in the egg sheath of the same cockroach can also vary according to environmental conditions and the number of eggs laid, ranging from a few eggs to more than 50 eggs.
The egg sheath is at a temperature of 25 degrees Celsius, relative to the temperature of 60-80%, and the egg period is about 28-90 days.
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First of all, congratulations, your observation is very correct.
This is a small cockroach that has not been breaking its eggs for a long time. But, but ah! Is this the only one you've found? In general, there are more than a dozen of these little things in a cockroach egg:
I can't count how many.
The picture above is not hatched. Without human intervention, the baby cockroaches are mostly able to develop into larvae and emerge from their eggs. At this point, they look like this:
White and chubby, crystal clear, very good-looking look.
When you grow up, you'll be pretty much the same as you pictured.
It is recommended that you look everywhere to see if the cockroaches lay their eggs in **, otherwise, there will be a lot more Xiaoxiaoqiang! Generally speaking, the reverse side of wooden furniture such as kitchen cabinets and drawers is the favorite spawning ground for cockroaches.
Everyone doesn't like cockroaches, so I wish you to send them away soon
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