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Keyword: Cocoons | | Seite 1 von 1 | | | |
| ...the threads of the web to get the full attention of the female. When the female is ready, she takes position on a mating string at the rear of the web. After mating the male spider leaves.
The female autumn spider creates several white, round cocoons onthe branches or the bark of trees for the protection of the eggs. Up to 100 yellow eggs are laid in these cocoons. A few days later the female autumn spider dies. The eggs overwinter in the cocoon. The new generation hatches in spring.
Some natural enemies of the autumn spider are: insectivores, birds and other spiders from the family pirate spiders (Mime... | | |
| | The females possess special glands to produce fibres which they use to build cocoons under water. Air is kept in these cocoons for the larvae to breathe. Water scavenger beetles feed on plants and rotting substances. Their larvae mostly live predatorily at the bottom of water bodies. Water scavenger beetles are very useful because they purify the water. | | |
| | | ... hatch after about 1 week, under favourable conditions. For 1 - 2 weeks they feed on the body fluids of the host larvae and from the 4th larval stage on they eat the rest of the host larvae. After their last larval stage, scoliid wasps pupate in cocoons, which are often reddish to brown in colour. The Scoliidae larvae of most Palearctic species overwinter in a preliminary pupae stage. About one month after hatching from the eggs, the adult Scoliidae of the new generation hatch from their cocoons.
Scoliidae are occasionally used by humans to combat grubs. | | |
| | Mating is usually in June and the females are passive. After mating, the females build one lenticular, multilayered cocoon in which they deposit their well-camouflaged eggs onto a bedding of silk. . After that, the females guard their cocoons, fasting and ignoring any disturbances. Just before the young crab spiders hatch, the females open the cocoons, thus helping the young with the hatching process. After this, the females die. | | |
| | ...on the surface of aphids. After one to two days, the larvae hatch and then eat the insides of the aphid out . They pupate in the hollowed out body of the aphid and after five days, the young adult wasps hatch. Some species specialize in spinning cocoons and live on their eggs.
Because the hatching wasps keep the populations of plant pests down, they are considered very useful. They are also actually used in agriculture to kill plant pests (aphids) or moths. | | |
| | ...The females lay their eggs on rotting plants, under bark or in reeds. Some species lay their eggs in water. The larvae feed on plant substrates first, and later on small insects, often unselectively. The pupae have breathing tubes and are hidden in cocoons. | | |
| | ...eir eyesight is not very developed. Therefore, it is possible for the beetles to land on? reflective surfaces (wet or shiny car roofs, windows, etc.) having confused them with open waters.
After mating, the oviposition of the females happens in cocoons near the surface of water where the eggs are glued to water plants. Approximately 8-10 days later the larvae (with body lengths of 3-4 mm) hatch. They increase rapidly in size . The larvae feed (starting at the lastest three days after hatching) )... | | |
| | The females lay purplish-pink eggs in cocoons, at the edge of their web. The females watch over and care for their brood until the young hatch and become independent. | | |
| | After mating, the fertilized females lay their eggs in the nests of different bee and waspspecies, for example Heriades truncorum and Ancistrocerustrifasciatus. Occasionally, oviposition takes place in butterfly cocoons, as observed in the case of the small tortoiseshell (Nymphalis urticae). Usually one egg is placed in each nest. Egg-laying often takes place in the nests of solitary bees of the genera Hylaeus and Osmia. A few days later the larvae hatch from their... | | |
| | Egg-laying is done either directly on the ground or in frothy cocoons. European locusts - in contrast to the tropical species - develop in 6 larval stages. Locusts usually spend the winter in the egg state but there are species which overwinter as larvae or adults. Orthoptera can be herbivores or omnivores. 2 species ... | | |
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