The tassar silkworm resembles the Eri but the caterpillars feed upon Dalbergia, Shorea, and Terminalia, etc. The body of the moth is white with brown stripes. (adsbygoogle = window.adsbygoogle || []).push({}); * Instar is the larval stage between two successive moltings in the life cycle of any insect. The silkworm which is used to make the silk feeds … Rearing of eri silkworm: This ensures that as soon as the eggs are hatched, the larvae can grab onto the host plant and start feeding. Copyright © 2020 | WordPress Theme by MH Themes, Benedict’s Test: Principle, Requirements, Procedure and Result Interpretation, Capsule staining: Principle, Requirements, Procedure and Microscopic Examination, Acid-fast staining or Ziehl-Neelsen staining : Principle, Requirements, Procedure and Microscopic Examination, Ligand and its types in a Co-ordination or Complex compound, Gram staining: Principle, Requirements, Procedure and Microscopic Examination, Electric bell (Construction and working mechanism), Cranial nerves (Types, Origin, Distribution and Function). It is being bred on a massive industrial scale in Asia for silk production, and is also very populair with hobbyists that like to breed insects, and reptile owners that use them as convenient feeder animals. The native place of this species is Assam where it has now become a good source of cottage industry. As they are carved out of shorter threads they are not extremely durable, besides the strength of the Eri silk is lost when soaked in water, therefore it is advisable that you get your Eri silk apparels dry cleaned. The caterpillars of this worm feed machilus plant and the silk produced by this moth is known as muga silk. Fertilized Eri silkworm eggs obtained from Tosheka Textiles Ltd grainages are placed in a rearing box and castor leaf placed on top of the eggs as shown in figure 1. One cocoon yields about 1000 feet of silk thread. The adult secretes an alkaline fluid to moisten one end of the cocoon and emerges through it and the long silk thread is broken into many short fragments. Newborn silkworms must be fed young mulberry leaves because they are more tender than the older leaves; their mouths will not be able to eat the older leaves right away. The eri silkworm (Philosamia cynthia ricini) feeds mainly on Since it is breathable it is suggested not to store your clothes in plastic. It is extremely light in weight and warmer than cotton and can be easily dyed and ironed. It is used in the manufacture of woven materials and knitted fabrics (men’s and women’s fashionable clothing). It is highly elastic and has long threads. In silkworm’s life cycle, there are 5 instars of larva. Around forty percent of Eri Silk is produced in Nagaland, Meghalaya, Manipur, Bihar, Orrisa, Karnataka, Assam, Andhra Pradesh and Jharkhand. Sexes are separate. Pupa: Pupal stages last for 15-37 days during when larvae change to pupae. The eggs or ovoid, candid white. Resultantly, the eri cocoons are open-mouthed and are spun. They also have yellow spots and lines on the wings. Eri silkworm (Attacus ricini) which feeds on castor leaves. Eri silk culture is indigenous to the North-Eastern region of India. Sushil Humagain Also known as Endi or Errandi, Eri is a multivoltine silk spun from open-ended cocoons, unlike other varieties of silk. It has spiracles on either lateral side of the abdomen meant for gaseous exchange. Eri silk is heavier compared to other types of silk. The head bears a pair of compound eyes and a pair of feathery antennae. The adult moths seldom feed and are concerned with reproduction only. The unique thing in Eri silk is the type of cocoon. The eri silkworm is easier to keep than the mulberry silkworm (that produces common silk and feeds on mulberry leaves only) because it eats many types of leaves. Eggs hatch into larvae within 10-12 days. squamosa, Pongamia pinnata, Coconut leaf, banana leaf, Sesbania grandiflora, and T erm inalia. Eri silk production and productivity depends highly on feeds consumed by eri silkworms. Eri silk is the product of the domesticated silkworm that feeds mainly on castor leaves. The Eri silk (also known as Endi or Errandi silk) is white or brick-red silk in color and is produced more in Assam and the adjacent North Eastern states. Pat’ in Eastern India, Pattu in Southern India, and Resham in Hindi and Urdu, Silk has a variety of names across the Indian subcontinent. Eri silkworm feeds on a variety of host plants. Domesticated silk moths cannot fly, but the wild silk moth can. November 2, 2017 Male and female copulate in tail to tail position and the fertilization is internal. In cold, the eggs don’t hatch for a long time and the increase in temperature causes them to hatch faster. Eri silk is a natural fibre harvested from the cocoon of the eri silkworm. Few pupae with cocoon are selected for further development into adults. The silk moths that are kept by humans today are the descendants of a separate wild species of living silk moth. Attacus ricini Seri silkworm ( Bombyx mori ) which feeds on mulberry leaves. Adults are stout dark moths with dark brown white spotted and striped wings. Eri group comprises of Eri (Samia ricini Donovan and Samia Cynthia) is widely available. Around forty percent of Eri Silk is produced in Nagaland, Meghalaya, Manipur, Bihar, Orrisa, Karnataka, Assam, Andhra Pradesh and Jharkhand. The woolly white silk is often referred to as the fabric of peace w… The cocoon is hard shell-like of the size of a hen’s egg and is generally found attached to a plant by a stalk. Male dies soon after mating and female dies after laying eggs. Most of the research and development of technology is confined to China, India, and Japan in Asia. The thorax bears three pairs of legs and two pairs of wings. Pupa is completely inactive. The silkworms give the Eri Silk a dull yellow, gold like sheen. Tags:  eri silk, Fabrics, Fashion, handicrafts, luxury, Mulberry Silk, royal, saree, Sari, silk, style, © 2020 Utsavpedia   All rights reserved | AN INITIATIVE BY UTSAV FASHION, http://www.csb.gov.in/silk-sericulture/silk/eri-silk/. Eri Silk has become the face of Indian Silk. It is used in the insulation coil for telephone, wireless receivers and tyres of racing cars. Although the original colors of the Eri silk remain dull yellow gold, the inception of chemical dyes enables the use of different colors which makes it more versatile. Adornments made out of either Gold or Copper would go best with the ethereal nature of the Eri Silk fabric. This artificial silkworm feed was fed to the Eri-silkworm (philosamia cynthia ricini) in the following way: The feed was soaked in water (the volume of water was … It is used in fishing lines and sieves of flour mills. Prominently found in the south Asian regions these Silk moths are predominantly found over the wild trees and shrubs of shorea Robusta and Terminalia. It is unwound from the cocoons and reeled into threads of commercial silk. Eri silkworm (Attacus ricinni): The proboscis is reduced, so they don’t feed. Eri Silk is called the father of all forms of cultured and textured Silks. As far as jewellery goes, one should opt for a more minimal approach. A study was undertaken to evaluate different castor genotypes for the rearing performance of This process is thus known as degumming. The name of the silk, ‘Eri’, comes from the Assamese word for castor. Much like the Mulberry Silk, the Eri Silk is also textured, but the texturing done over the Eri silk is finer and much more than the mulberry Silk, which ultimately adds up to the breathtaking yellow sheen of the Tussar silk. Eri silkworm pupae can be harvested to provide a cost effective alternative edible oil that can be used to nutritional advantage in the food and feed industry. During summer, the worms hatch out in the morning in about 8 days. Eri cocoons are stalkless, flossy, white or brick red in colour [Fig. In China, the Eri silkworms feed on a different host plant called Borkesseu, Ailanthus excelsa and the silk thus produced is called Ailanthus silk. It has shorter fibers’ than the usual cultured Silks. Samia ricini, the “eri silkmoth”, is a one of the most prominent “species” of Saturniidae. An adult silk moth is strongly built, about 2.5 cm long and is creamy white in color. Besides this, it is used for Orissa’s Pattachitras and Kantha stitches of Bengal, and has also been extensively used as a base material for large varieties of handicrafts, clothing and texturing. The adult coming out of the cocoon has wet wings and hence cannot fly. The degummed cocoons are then opened in cocoon opener which helps in further cutting the eri silk fibres to the appropriate length. Hence, silk is also called the “Queen of fibers”. It is indeed one of the softest and purest forms of Silk which is fancied by almost all the Silk lovers and is a staple in every fashionistas’ wardrobe. This shall corrode the effect and shine of your Eri silk apparel. Eri Silk as a fabric is preferred by women and for clothes that are overall feminine in nature and appeal. Muga silkworm (Antheraea assama): It also belongs to the family saturnidae and semi-domesticated in nature. Manual cutting is inefficient, hence the ‘twin blade cutter’, modified for eri silk cutting is suitable. It is also essential to open and free the cut eri silk from remnants of insects. The bulk of Eri Silk production gives Assam the name of Eri Silk state. The newly hatched caterpillar is 6mm long, brownish in color and moves in a characteristic looping manner. It flies after its wings are completely dry. Besides this wild silkworms like Attacus atlas and Cricula species are distributed in this region. egg, larva, pupa and adult. It is commonly produced in northeast India and some parts of Japan, China, and Thailand. The Samia cynthia butterfly has a brown wing color in different shades of brown and has a beautiful purple stripe along the wings. In order to open Eri silk in its original, fluffy form, it is either boiled with soap water or through scouring (cleaning) it in a large tank through the process of hydro-extraction. The male silkworms die after copulation and female silkworms die after laying eggs. In sericulture, the eggs are collected and stored in a cold place when the food (mulberry leaves) are not abundant to feed the larvae. 3.26(h)] 5 cm long in case of female and 4.6 cm long in male. The thread becomes wrapped around its body forming a pupal case known as the cocoon. The silk is not reelable like Bombyx mori, the mulberry silkworm, so it is spun into a yarn which is both soft and durable.In their native lands, they are hand-fed mostly castor bean and tapioca leaves, but will also eat ailanthus and ligustrum. There is a subspecies, S. cynthia ricini in India and Thailand that feeds upon the leaves of castor bean, and is known for the production of eri silk, and is often referred to by the common name eri silkmoth. Eri silk -- produced by the Eri silkworm, which feeds on different foods than the Mulberry silkworms -- has its origins in Assam province in India and is relatively new to Thailand. When they are born they are very small (0.5 cm) and have … Eri silkworm species being reared was found to be Synthia ricini. Silkworms eat mulberry leaves exclusively in nature. Like any other insect, its life cycle completes in four stages, i.e. Series of gilling and drawing operation make the carded sliver fibres parallel and uniform. Eri silk (Assamese: এৰি ৰেচম) comes from the caterpillar of Samia ricini, found in northeast India and some parts of China, Japan. Eri Silk is one of the purest forms of Silk that is a true and genuine product of the Samia cynthia ricini worm. Minute powdery scales cover the entire body. It was imported to Thailand in 1974. 100g Eri silk is processed without killing the silkworm. It neither feeds nor moves and if permitted to live, it undergoes active metamorphosis and becomes an adult in about 10-12 days. Biologically named as Ailanthus Silk moth, this silkworm or known as a caterpillar is generally found in China and Japan. In the early spring, with the enough supply of food, the eggs are hatched inside the incubator at the temperature of 18-25. It is the only domesticated silk produced in India, as the process doesn’t involve any killing of the silk worm, also naming Eri silk as ‘Ahimsa (ahinsa) silk or fabric of peace.
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