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creepincrawl · 8 months

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I raised some chunky silkworm moth babies recently and they're so so cute

#moth #silkworm #silkworm moth #entomology #bugs #bug #cute bugs #cute moth #moths #insect #cute insect #bug video

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moths-daily · 10 months

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Moth Of The Day #94

Domestic Silk Moth

Bombyx mori

From the bombycidae family. They have a wingspan of 30-50 mm. They tend to live in man made habitats where mulberry trees can be found. They can be found from northern India to northern China, Korea, Japan, and the far eastern regions of Russia.

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tokumon · 3 months

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Kuwago Kaijin, a silkworm moth monster

from Kamen Rider Black ep. 3

#Kuwago Kaijin #Kamen Rider Black #Kamen Rider #tokusatsu #silkworm moth #silkworm #moth

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kohanakonohana · 10 months

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noteからの翻訳です。日本語の方はぜひ末尾のリンクから向こうへ。

The silkworm makes a cocoon to protect itself when it becomes a pupa. The length of the thread that is ejected while swinging its head in a figure eight motion is said to be as long as 1,300 meters or more. 1,300m or even longer in some varieties.

The raw silk I usually use to weave kimonos is a thin, fine thread, and those threads I usually use to weave kimonos is made by twisting 10 strands of 7-grain yarn. In other words, it is the thickness of 70 cocoons.

When drawing raw silk, cocoons are boiled and the protein (sericin), which is like glue that holds the yarn together, is broken down and drawn out. The figure of eight(8) is the secret to prevent tangling in the middle.

So. we could find a silkworm or moss after we pull and take a long thread from inside. (They will not become adult silkworms, though, because they are boiled.

Raw silkworms can be boiled, or the amount of work required to take the thread from them is limited. Recently, we have been drying, freezing, salting (salting method), and steaming (steaming method), etc., to produce raw silk. In short, it is necessary to prevent the silkworms from leaving their cocoons as adult worms.

Because …silkworms first hatch in cocoons, but they have to make a hole in the cocoon they made themselves to get out.

For the time being, they finish their transformation into the form of a moth inside and tear the skin of their chrysalis, the silkworm then breaks through the chrysalis skin and expels an enzyme called cochonase, which is produced in the organ called the bird's crop sac.

The moth then breaks through the chrysalis skin, and exhales an enzyme called cochonase, produced in the organ called the bird's craw sac, to soften the sericin at the exit, then emerges from the chrysalis by pushing its way through the threads.

Furthermore, when it comes out, it also produces urine, or water, which is called "moth urine". and coloured and stains the inside of the cocoon. The rest is the skin of the shed pupa, which also sticks to the inside of the cocoon.

The silkworms hatch and the quality of the cocoons changes,

The quality of the cocoon changes and raw silk cannot be obtained. The enzyme does not break the thread itself, but the cocoonase is alkaline, so it does not do much damage to weakly acidic fibres.

However, cocoonase is alkaline, so there is no small amount of damage to weakly acidic fibres. Nevertheless, at least some of the silkworms have to be made into adult worms, because the silkworm eggs for the next cycle cannot be obtained.

The cocoons from which raw silk was not obtained, and the rest from disease, or the cocoons that did not produce raw silk, cocoons that were too small because of disease or poor growth, and so on.

It is Japanese culture not to waste such things. The cocoons are boiled, the sericin in the paste is broken down, and the pupal skin is removed as much as possible, and the result is cotton-like material known as "mawata".

Mawata sheets

The "tsumugi" thread is made by stretching and twisting the cotton, either by pulling it out or twisting it, or neither, or both. Then, fabrics woven using the tsumugi thread is called tsumugi weaving.

The left is raw silk and the right is tsumugi yarn spun by myself.The texture is different. Such is the case even with purchased products.

To be precise, the silkworm's thread is called "kibiso"

The silkworm's thread is made up of three parts: the beginning part, called kibiso ; the long, long raw silk part; and the end part, called "bisu".

Both kibiso and bisu have different textures from raw silk, and sometimes only these parts are collected and sold as separate yarns.

The beginning of the spit is still unstable and the end is the residue of the body, so in essence, I have heard that they are made slightly differently...In the case of the easily recognisable coloured silkworm cocoons, the hard yellow-green outer part is the kibiso,

The bis has a light yellow-green raw silk part inside, and the bis is slightly yellowish white.)

The bisu ends up looking leathery and unravelling…

Those different textures remain in the mawata, so, even if you try to stretch them out homogeneously, it is sometimes impossible to do so. That is the true nature of the knots that remain in the silk threads.