Egg cocoon

The different spinning glands in the spider s abdomen produce different kinds of silks, such as draglines, frame threads, mooring radial threads, spiral threads, sticky material, egg cocoon, swathing bands and attachment discs. 

In Japan, Nephila clavata spiders are born from an egg cocoon in late spring and reach divergence of sex in late summer, accompanied by the final ecdysis in summer. Male spiders visit the orb-webs of female spiders for courtship in autumn. After mating, pregnant female spiders lay their eggs inside silk cocoons in late... 

Silk properties vary strongly, depending on their structure. A single spider can possess up to seven different types of silks which may be used, for example, as dragline, for orb-spinning, or to encase prey or the eggs in an egg cocoon. Each type of silk is produced by its own silk gland. 

Silkworm, Bombyx morr, eggs, acute single exposure of 2, 5, or 10 Gy At 2 Gy, an average increase of 23% in larval mass, cocoon shell weight, and silk production no stimulatory effect at 5 Gy at 10 Gy, larval development inhibited 2... 

The larvae that hatch from Cotesia eggs remain inside their caterpillar host, exploiting it as a secure haven from the outer world and a convenient food supply. They feed on the caterpillar from within until they are mature and ready to pupate. Then they emerge from its body and immediately begin spinning small white cocoons, which they attach by one end to the caterpillar s back. It is not uncommon for a tobacco hornworm, still alive, to be festooned with fifty or more Cotesia cocoons, each resembling a diminutive grain of rice fastened to the caterpillar. Each cocoon contains... 

Worms for a worm bin Red wigglers, have a characteristic red-and-yellow banding they are also known as tiger worms. Their eggs are borne in tiny, lemon-shaped cocoons. 

Silk was first developed as early as 6000 b.c. The Chinese Empress, Xi Ling-Shi, developed the process of retrieving silk filaments by floating the cocoons on warm water. This process and the silkworm itself were monopolized by China until about a.d. 550 when two missionaries smuggled silkworm eggs and mulbetty seeds from China to Constantinople (Istanbul). First reserved for use by the Emperors of China, it eventually spread to the Middle East, Europe, and North America until now when its use is worldwide. The history of silk and the silk trade is interesting and can be obtained at http / en.wikipedia.org/wiki/Silk. 

Most arthropods lay eggs, which hatch into larvae. Some are viviparous, like scorpions, and bear live young. As most arthropods grow, they shed or molt their outer skin covering a number of times before becoming adults. There are some groups that metamorphose from larva to adult inside a cocoon or pupa of their own making. 

There are all sorts of silk that are found in nature. The stuff that is usually found in textiles comes from silkworms (Bombyx mori). They are not really worms, but the larvae of moths. They emerge from very small eggs with an incredible lust for mulberry leaves, which they consume until they are ready to. pupate and weave a cocoon around themselves. Unlike spiders, which spin silk from their rear end, silkworm silk is actually hardened saliva, which comes out of the mouth. The larva has a small spinneret on its lip, through which the silk emerges. The cocoon is formed from a single strand of silk that... 

Growing shoots wilt and die. Cause Oriental fruit moth larvae. Slit the stem below the wilted portion and look for a pinkish white, A" caterpillar—the larva of an oriental fruit moth. Larvae tunnel into shoots and remain for 2 weeks before leaving to pupate for 10 days in cocoons suspended in trees. Larvae from later generations bore into and ruin fruit. Use pheromone traps to monitor and control the pests. Mating disruption pheromones, such as Isomate-M, are also effective. Replace them every 90 days throughout the growing season. For heavy infestations, spray superior oil to smother eggs and larvae. 

Description Adults males are black, clear-winged moths (1" wingspan) females are wingless. Larvae dark brown, V4 -l" caterpillars with white or yellow heads feed inside cocoons. Eggs light tan eggs laid inside bags. Found east of Rocky Mountains. 

Larvae feed for 1 month, spin webs, and pupate within rolled leaves or in cocoons on bark. Adults emerge late June or July and lay overwintering eggs on bark. 

Life Cycie Females lay eggs inside host eggs or larvae wasp larvae develop inside hosts, eventually killing hosts and pupating in or on them. Many species overwinter as mature larvae in cocoons in some species adult females overwinter. One to 3 generations per year usual some with up to 10 generations. 

Life Cycle Adults emerge from overwintering cocoons in early spring and lay eggs on leaves. Larvae mine leaves for 1-3 weeks, then drop to soil to pupate 2-4 weeks. Two to 3 generations per year, more in greenhouses. 

Life Cycle Larvae overwinter in cocoons in soil and pupate in spring adults emerge in late May eggs hatch in a week larvae feed 3-4 weeks, then pupate in soil. Second generation adults appear in late July, with larvae hatching in mid-August. 

Lite Cycle Larvae overwinter in cocoons in the soil, pupating in the spring adults emerge in mid-May and lay eggs in leaves larvae feed in leaves until ready to pupate. Up to 4 generations per year. 

Control Prune infested branches and burn them, or remove tents filled with caterpillars from branches by winding them onto a broomstick with nails projecting from it in winter, remove egg masses from bare branches attract native parasitic flies and wasps by growing small-flowered herbs, such as catnip, and wildflowers, such as Queen Anne s lace. Do not destroy wandering caterpillars with white eggs or cocoons attached to their backs they are hosts for native parasites. Spray BTK weekly while larvae are small try releases of spined soldier bugs. 

Life Cycie Overwintering eggs hatch in spring larvae develop for 4-6 weeks, then pupate in cocoons on nearby trees adults emerge in 2 weeks, mate, and lay eggs on old cocoons. Up to 3 generations per year. 

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