What is the use of small black dots on the wings of dragonflies

It is a vibration absorber for dragonfly flight, which can eliminate the flutter of wings when flying.

Flutter is a kind of aeroelastic phenomenon in gas dynamics, and the structure of the aircraft is subjected to aerodynamic, elastic and inertial forces in a uniform air flow.

The combined effect of the three produces a kind of self-excited vibration, the faster the flight, the wing is subjected to the dynamic action, so that the wing vibration and spokes are larger and larger, and finally the wing is broken. After identifying the problem, the aircraft designers installed a weighting device not far from the wing end on the leading edge of the wing to reduce flutter and finally solve the problem of broken wing. However, how does the wings of the flying dragonfly resist flutter when its wings are so thin and transparent that they can fly at speeds of up to 140 kilometers per hour that their wings are not broken?

Entomologists found that on the anterior edge of the dragonfly's front and rear wings, not far from the end of the wing, there is also a thickened area of dark tissue, called the wing nevus, if the wing nevus is removed, the dragonfly will also break its wings when flying. It proves that it is this keratinous tissue that makes the dragonfly's wings free from the danger of flutter.

If there are no wing moles, the dragonfly wings will not break in high-frequency flapping.

Because she can't reach the high frequency fanning, she will only sway.

Absolutely! The little black dots on its wings are used for balancing purposes! The reason for the balance of the flight of the aircraft is also derived from the small black lumps on the wings of the dragonfly!

Agree! Where did you look up the one above?

It's a black python.

蟌, pronounced [cōng], is a slender and flimsy flying insect that resembles a small dragonfly. Arthropoda, Insecta, Winged Subclass, Dragonflies.

Adults are slender, and some species often have a strong color and metallic luster. The wings are wide and can be folded towards the tail. The wing veins are dense.

The feet are slender and distributed with spines. The shape and pulse sequence of the fore and hind wings are similar. The base of the wing is narrow, forming the wing stalk.

When resting, it is generally four-winged and three-dimensional. Wing nevi are often underdeveloped or absent. The disc chamber is long, square, and usually has many transverse veins.

The larvae's lower lip is deeply longitudinally cleft; The larvae are caudal gill sac-shaped, or their transverse sections are triangular. The juvenile body is slender and has 3 tail gills at the end of the abdomen, and the tail gills are respiratory organs, often leaf-shaped, but also sac-like or other shapes.

The black cockroach is a type of damselfly, not a dragonfly. Apparently this is a damselfly in your hand, with black wings and a metallic sheen on its body, very similar. But I'm not a professional after all, I can't be sure, I can only say that it is very likely.

Not necessarily, but you're just a black python.