|
|
| Adults are often found near water. The males have feathery antennae. The abdomen of the females is almost completely covered by their wings. | | |
|
| Adults are often found near water. The males have feathery antennae. The abdomen of the females is almost completely covered by their wings. The larvae of Chaoborus crystallinus are transparent (glass rods larvae) and horizontally live in water. They breathe through their body surface. In the 7th abdominal segment, are hollow sacs filled wit... | | |
|
|
| The fertilized females lay their eggs on the host plants of the larvae, or in the soil. The larvae feed as rootworms or mostly as leaf miners. Some species of larvae can cause considerable damage when they infest crops. This includes in particular, species of the genus ... | | |
|
| Hylemya strenua are active from May to September in wet meadows, forest edges and gardens where they are found on flowers and on cattle or horse manure. The fertilized females lay their eggs on dung. The larvae hatch immediately and develop in the feces, feeding on the substrates. | | |
|
| Anthomyia pluvialis are active from May to October. The males are often encountered in groups in the shade of trees. The adult flies feed on nectar and pollen from flowering plants, the females suck the blood of other insects or conspecifics. | | |
|
| After mating, the fertilized females lay their eggs on the food plants of their larvae. The larvae develop in decaying plants, rotting fungi, and are also sometimes found in bird nests. After pupation, they overwinter in the soil. | | |
|
| The females use ovipositors to lay their eggs in small cracks or holes in their larvae’s food plants. The larvae of longhorn beetles are pure herbivores. They mainly feed on wood. Their bodies are flat when they live under tree bark and cylindrical, when they ... | | |
|
| These beetles are diurnal and have a life expectancy of 1-2 months (females about 35 days) and live in heathlands, forests, forest edges, meadows and gardens. In terms of environment, what is important for these beetles is the presence of the plant dock (Rumex) which they eat. The adult beetles seldom fly but they move cons... | | |
|
| ... to autumn and begins with copulation among the autumn generation of beetles from the previous year, which happens immediately after its release in March / April. Egg laying takes place in several sessions on the food plants of the larvae. The females attach each of the 100 to 600 oval, light to egg yolkyellow coloured eggs to the underside of leaves, in batches of 20-45. In its entire life cycle a female produces about 1,200 eggs. | | |
|
| Adult female Plagiognathus arbustorum reach lengths of 3.7 - 4.3 mm, while males range from 3.8 - 4.6 mm. Their bodies are elongated and the males are slenderer than the females. Plagiognathus arbustorum vary in colour from light olive brown to almost black. The head, front of chest and first two antennae segments are usually dark. The head is small, shorter than it is wide and strongly inclined backwards. The chest has ... | | |
|
Seite 17 von 26 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
