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MayfliesIt is the most primitive winged insect.
Mayflies, commonly known as "overnight old", have an ancient and special shape and are the most primitive winged insects. It can be divided into the same class as dragonflies, and their wings cannot be folded. Mayfly insects are slender and soft, usually 3 to 27mm in length, short antennae, developed compound eyes, large mid-chest, developed forewings, vestigial hindwings, a pair of very long tail whiskers at the end of the abdomen, and some species also have **tail filaments, juvenile (juvenile) aquatic.
Lives in freshwater lakes.
or in a stream. <>
In spring and summer, from afternoon to evening, there are often swarms of males to "marry", and females fly into the group alone to pair with males. Adults do not feed, their lifespan is very short, only one day, but in this short life, they bloom the most brilliant brilliance.
Adult mayflies don't eat, and after molting, their digestive tract fills with air — before the last molt, the midgut heals to form a closed, sausage-like balloon. It's filled with air, so that the larvae can easily float to the surface.
Mayfly larvae live in a variety of freshwater habitats, most of which are found in living water at moderate temperatures and in constant flow, a few can survive in saltwater, and one even survives on land, and adult life is generally spent in flight. Except Antarctica.
It is found all over the world in the high latitudes of the Arctic and outside some oceanic islands.
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Mayflies are an ancient and special insect, commonly known as mayflies, which belong to the first ptera. They are the most primitive winged insects with an ancient and special shape.
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The grasshopper is a large ant. Long-tailed mayfly, belonging to the mayfly family, the most primitive winged insect, small or medium body size, slender, soft body wall, small head, short antennae, bristle-like, compound eyes developed, female compound eyes often far from left and right, male compound eyes are often larger, left and right close, and the upper and lower small eye surfaces of each compound eye are often different, the upper half of the small eye surface is larger than the lower half, and there are two parts completely separated.
HabitsJuvenile (larvae) aquatic and live in freshwater lakes or streams. In spring and summer, from afternoon to evening, there are often swarms of males to "marry", and females fly into the group alone to pair with males. Spawns in water.
The eggs are tiny, oval-shaped, of various colors, with veined surfaces, sticky, and can attach to debris at the bottom of the water.
The larval stage is several months to 1 year or more, molting 20 24 times, and up to 40 times. Mature larvae can see 1 2 pairs of blackened wing buds. There are pairs of tracheal gills on both sides or on the back, which are respiratory organs suitable for living in water.
Feeds on higher aquatic plants and algae, and some species feed on underwater detritus in autumn and winter.
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Mayflies are a primitive and beautiful class of insects that originated in the Carboniferous period and are at least 200 million years old, and are the most primitive winged insects. It is mainly distributed in the tropical to temperate zone, with about 30-50 species known in the world and about 36 species known in China. The mayfly has a slender body and a soft body.
Compound eyes are well developed, with 3 single eyes. The antennae are short and hairy.
The mouthparts are chewing, but the upper and lower jaws are vestigial and have no ability to chew. Wings membranous, wing veins reticulated. The forewings are large and triangular.
The hindwings are vestigial and significantly smaller than the forewings. The wing veins are primitive, and the wings stand erect on the back when resting. The male has elongated forefeet and is used to catch the female in flight to facilitate mating.
There is a pair of long filamentous tail whiskers on both sides of the abdomen, and some species have a long mid-tail filament.
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Mayflies are the most primitive winged insects.
Mayflies are a general term for mayfly insects, which have an ancient and special shape and are the most primitive winged insects. Mayfly insects are slender and soft, usually 3-27 mm in length, with short antennae, well-developed compound eyes, large mesothorax, well-developed forewings, vestigial hindwings, and a pair of very long tail whiskers at the end of the abdomen. Some species also have the middle cover of the old central tail silk, the juvenile is aquatic, the adult does not feed, the life span is very short, the shortest is only one day.
Adult mayflies do not eat, and after molting, their digestive tract is filled with air. Before the last molt, the midgut ends heal, forming a closed sausage-like balloon. It's filled with air, so that the larvae can easily float to the surface.
The origin of mayflies
Mayflies are a primitive and beautiful class of insects, which originated in the Stone Ascending Carbon Period, with a history of at least 200 million years, and are the most primitive winged insects of the Pei family. It is mainly distributed in the tropical to temperate zone, with about 30-50 species known in the world and about 36 species known in China.
Adult mayflies are often found near streams and beaches. According to its adaptation and requirements to the water, it can be used to detect the type and degree of pollution of the water. It is the only group of insects that has two winged adult stages (sub-adult and adult) in its life.
Mayflies live in a variety of freshwater habitats, filtering algae and particulate food in the water, or preying on aquatic invertebrates.
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Grasshoppers are ants.
Grasshopper is another name for termites. The mayfly is a relatively large ant that prefers to live in moist and warm soil. It has a certain toxicity and is often used to refer to people who are not able to do it.
Idiom stories. At that time, Li Bai and Du Fu had just passed away for decades, and some were criticizing the works of these two great poets. Han Yu disagreed, and wrote a poem to his friend Zhang Ji to show his attitude.
There are a few lines in the poem that say: "The poems of Li Bai and Du Fu exist in the world, and their brilliance cannot be extinguished; Who knew that there would be such an ignorant and stupid group of people who would slander them under various pretexts. It's like a little grasshopper trying to shake a towering tree, which is ridiculous and too self-conscious.
Han Yu's poems praising Li Bai and Du Fu are majestic and dazzling; criticize those so-called critics for being arrogant, naïve and ignorant; thinks that they are trying to belittle Li Bai and Du Fu, just like ants shaking a tree.
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The mayfly belongs to a relatively large type of ant. Common room ants.
The head of the macrocephalic ant is large and disproportionate to the body; The posterior cephalic margin is concave, resulting in a prominent posterior cephalic angle; Head and abdomen dark brown, and ventral thoracic segments brown. It is found in cities and lush forests, in humid, shady areas. The survival of the new group may be aided by the parent group in terms of food and defense.
Supergroups can cover tens of hectares.
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