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Keyword: Eggs | | Seite 1 von 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | | | |
| The females lay their eggs singly, in clusters or in rows on their forage crops. Some species hide their eggs in holes in leaves, stems or twigs. Others cover their eggs with feces. The Donaciinae live both on water as well as on water plants. Here is the egg laying in a kind of jelly. The eggs are laid in rows on leaves. The larvae bore their heads in roots, stems or leaves and suck out the plant juices. | | |
| | The females lay their eggs in spring, on the underside of the leaves of the food plants of their larvae, on birch or elm, for example. The eggs are deposited in groups of 30 - 50. The females care for their brood by sitting on the eggs and fasting in order to stay and defend them against potential attackers such as ants, spiders, beetles, parasitic wasps and other enemies. Even after the larvae (nymphs) have hatched from their eggs, the mothers remain on guard. The survival rate of the nymphs is therefore almost 100%. | | |
| | | The lifestyle of the braconids varies greatly. They represent an important environmental regulator and are suitable for biological pest control. The majority of species lay their eggs in the eggs, larvae or pupae of other insects. Some species of the subfamilies Mesostoinae and Doryctinae are therefore well known for depositing their eggs in plant leaves (they lay their eggs in bile). | | |
| | The females lay their eggs in ‘packages’ in wet or muddy ground. The eggs overwinter there. In spring the eggs are transported into water by the rain. The pre-larvae soon hatch from their eggs and fully develop into larvae. At the end of June, after one year of development, the larvae emerge from the water as adult dragonflies. | | |
| The sage leafhopper reproduces several times in the course of a year. The females lay their eggs on the food plants of the nymphs. The last generation of the year overwinter as eggs. Sage leafhoppers can be observed from May to late autumn. The adults are shy and fly away rapidly when disturbed. Among the natural enemies of the nymphs of sage leafhoppers are: assassin bugs, lacewings and tiny nematodes (about 0. 8 mm in length)...
...d from May to late autumn. The adults are shy and fly away rapidly when disturbed. Among the natural enemies of the nymphs of sage leafhoppers are: assassin bugs, lacewings and tiny nematodes (about 0. 8 mm in length) of the species Steinernema. The eggs of sage leafhoppers by the Mymaridae, also known as egg parasitoids, are at risk. | | |
| | ...e 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 (Mimetidae), for example species of the genus Ero. | | |
| ... areas on the leaf tissue (which also enable bacteria and fungi to penetrate into the plant) are clearly visible as yellowish stains.
The males live on nectar or honeydew but they can live without nutrition until they mate. The females lay their eggs on the food plants of the larvae, for example chrysanthemums (hence their name) and gerberas.
In vegetable plantations, chilli plants and potatoes are often affected. The females use their ovipositors to drill into the upper side of leaves and...
...le chrysanthemums (hence their name) and gerberas.
In vegetable plantations, chilli plants and potatoes are often affected. The females use their ovipositors to drill into the upper side of leaves and place 50 to 100 (sometimes even up to 400) eggs there. The hatched larvae develop rapidly. At the end of the third and last larval stage the bodies of the larvae can reach lengths of up to 3 mm. The bodies are yellowish-white in colour and have no legs. The larvae remain in the leaf and bite...
...yellow to brown in colour) to adult takes about 17 days.
Endoparasites are natural enemies of the Chrysanthemum leaf miner larvae, for example, the larvae of the ichneumon wasps Dacnusa sibirica and Diglyphus isaea. The ichneumon wasps lay their eggs in the larvae of the Chrysanthemum leaf miner. The hatching wasp larvae cause mass deaths of the host larvae by feeding on their insides. Amongst humans, the Chrysanthemum leaf miner ( is regarded as a pest when encountered in greenhouses and plan... | | |
| | In May - June, matingtakes place. Oviposition also occurs in May - June in clutches of 60-70 eggs, which are laid on the lower surface of the leaves of the food plants of the hatching larvae. A female can lay up to 900 eggs. The eggs are approximately 0.5 x 0.9 mm in size, oval to cylindrical in form and ochre-yellow-orange in colour. | | |
| 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...
... 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 eggs. Firstly they eat the eggs or larvae of the host animals and later on any food supplies found there. | | |
| | The mating season for southern green stink bugs extends from spring through to late autumn. The fertilized females lay their eggs on the leaves of different plants such as Crotalaria, wild blackberry (Rubus) and Cyperus rotundus. They glue about 260 barrel-shaped, whitish-yellow eggs to the surface of the leaves, in groups of 30 - 130. The eggs are about 1. 1 mm in length and 0. 9 mm in width and turn pink over time. | | |
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