How do siphon mouthparts absorb food, and what are the components of pest siphon mouthparts?

Siphon mouthparts: A type of insect mouthparts. The outer lobes of the left and right jaws are extended into siphon-like beaks, which are usually rolled up like clockwork and can be straightened by the pressure of hemolymph when sucking; The lower lip has only 3 segments, and the lower lip is well developed, and the upper jaw is also degenerated or disappeared.

Most of the structure is degenerate, and part of the lower jaw is extended into a tubular food passage. When not in use, it is coiled like clockwork, and when it is fed, it is straightened. Endemic to the order Lepidoptera.

Suitable for sucking nectar. It is a mouthpart unique to Lepidoptera. The straightened mouthparts can suck the nectar in the flower, and can also absorb water droplets.

The phenomenon of siphoning is caused by the gravitational force and potential difference between the liquid molecules. That is, the pressure difference of the water column is used to make the water rise and then flow to a low place. Since the nozzle water surface is subjected to different atmospheric pressures, the water will flow from the high-pressure side to the low-pressure side until the atmospheric pressure on both sides is equal, and the water surface in the container becomes the same height, and the water will stop flowing.

The siphon phenomenon is used to quickly pump out the water in the container.

Example: Insert one end of a hose filled with water into the water and the other end hanging out of the container containing the water, and the outlet should be lower than the water surface. In this way, water will flow out of the container and down the hose.

This is the reason for the water absorption stone sold in the flower market, there are many small eyes in the stone, and the water at the bottom of the stone can be sucked up due to the siphon phenomenon for the small plants on the stone such as green moss and wheat seedlings to survive.

Little Man Jia Ding "about"Siphon mouthparts"The definition is correct.

But the principle of siphon mouthparts has nothing to do with the "siphon phenomenon"!

It relies on the principles of physics.

Fluid food, got it?

<> this is the mouthpart (mouth) of a butterfly, which is called a siphon mouthpart. When you don't eat food, you put it away, like a curled spring. When eating food, straighten your mouthparts and suck up the nectar like a straw.

Butterflies can only suck liquid food – nectar.

The larvae of butterflies, commonly known as caterpillars, eat a large number of plant leaves to replenish energy before the adult pupae hatch, and become butterflies after the adult, and the most important mission of the adult is to mate and produce the next generation. So eat less.

Most butterflies suck nectar, and in the case of nectar-sucking butterflies, they not only suck nectar, but also love to suck the nectar of certain plants, such as the blue butterfly that sucks the nectar of lily plants; Cabbage butterflies suck the nectar of cruciferous plants; The leopard butterfly is fond of sucking the nectar of Asteraceae plants, etc., and some butterflies that do not suck nectar have bamboo-eyed butterflies that suck fig juice; The lavender butterfly, which feeds on the sour pulp of sick oaks and poplars. Some varieties also suck the sap that naturally overflows, minerals dissolved in the water, etc.

The mouthparts of butterflies are undermouth siphon mouthparts. Can curl and smoke liquids.

Most of the adult butterflies mate and lay eggs and die just before winter arrives, but some species migrate to the south for the winter, and the migrating butterfly colonies are spectacular. At present, the more famous butterfly wintering sites are Mexico in the Americas and Yunnan in China.

Some species of butterflies rely on the compound eyes of their heads to identify flowers of different colors and sweetness, chop and suck the sap from the stamens or fruits. A small number of butterflies suck liquid from dead animals to get the nutrients they need.

The mouthparts of butterflies suck nectar like straws.

Siphon mouthparts, which are characterized by a beak that curls and extends, so that the beak of the siphon mouthparts cannot penetrate the tissue, but can only suck the sap of nectar. The beak is formed by the chimeration of the left and right lateral jaw lobes, and the upper lip, lower jaw and lower lip are all degenerated, and only a part of the lower jaw is specialized into a siphon-like beak, in which the food passage is located, which is very suitable for sucking nectar and liquid food.

The beak of the siphon mouthparts is formed by the mosaic of the outer jaw lobes of the left and right lower jaws, and the cross-section of each outer jaw lobe is crescent-shaped, and the two outer jaw lobes are joined together to form the food tract. The external jaw lobes are formed by a series of ossifying rings and membranous rings arranged in close proximity, so that they can be curled and stretched freely. The axial and stem nodes of the lower jaw have been retracted into the head, leaving only a pair of underdeveloped mandibular whiskers on the outside.

The upper lip is a very narrow transverse strip. The upper jaw has been degenerated, and only a few of the more primitive moths have an upper jaw. The lower lip degenerates into small triangular patches, but the lower lip is well developed and the curly beak is sandwiched between the two whiskers.

The suction mechanism of the siphon mouthparts is formed by the combination of the esophagus and the front part of the throat, so it is called the esophagus-throat pump, and the dilating muscles of the pump are born in the front and back of the frontal ganglia.

Systemic insecticides or contact killers for stabbing mouthparts. Chewing mouthparts with stomach poison or contact killer. Contact killer for siphon and licking device.

Probably not, because the hummingbird male moth only sucks nectar from the flower, and does not suck the sap by piercing the plant's cortex.

Stinging and sucking: the upper and lower jaws are slender and needle-shaped, the lower lip is extended into a beak, and it has a suction mechanism to absorb juice, such as: cicadas, bugs, mosquitoes, etc.

Licking and sucking: only the upper and lower lip and tongue are retained, and the large and small jaws are degenerated. The lower lip is elongated into a beak and the end is specialized into a lip flap, which licks and sucks up exposed liquids or tiny solid foods, such as flies.

Rainbow (sucking) suction type: most of the structure that makes up the mouthparts is degenerated, and the beak-like mouthparts are made of the outer jaw lobes of the left and right jaws hugging together into a long tube, coiled in the front and lower part of the head like the clockwork of a clock, and elongated when used, which can inhale liquid foods such as nectar and water into the digestive tract. Such as moths and butterflies.

Chewing: Consists of the upper jaw, lower jaw, lower lip, and tongue.

Chewing and suctioning: the middle lip and tongue are long, the left and right sides are healed, and a spoon-shaped tongue flap is formed at the end; lateral labial tongue scaly, enclosing the left and right sides of the base of the middle labial tongue; The lower lip is divided into 4 segments, and the outer lobes of the small jaw are large lamellae. When sucking honey, the outer jaw lobes of a pair of small jaws and a pair of lower lips must form a temporary straw along the middle lip tongue, and the middle lip and tongue move quickly back and forth in the straw to draw the honey into the tube.

Such as bees. Filing type: The file-suction mouthparts are unique to the taperopteran insect thrips, and the asymmetry of each part is its significant feature.

Siphonic mouthparts are specific to lepidopteran adults, but not all lepidopteran adults have them. The distinctive feature of this mouthpart is that it is shaped like a slender tube, which can usually be bent and extended, and is suitable for sucking nectar from the bottom of the flower tube, such as moths, butterflies and other insects.