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| Mason bees | | ...nt species are found in Central Europe. These include Osmia bicornis and Osmia cornuta.
Mason bees build their nests in walls, cracks in stone, , (sandy) soil, hollow plants, dead wood from trees or in the galleries of wood-boring insects. The females build individual brood chambers inside the nest using glandular secretions and leaf pieces. ) They deposit pollen and nectar in each brood chamber for the future larvae before they start laying eggs. After oviposition the brood cell is closed w... | | |
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| The Zygielle x-notata likes to spin its web in window frames. It is also found in house walls, corners, grating, wood piles or under the bark of old trees. Its need for heat often drives it to seek out human settlements. The females spin webs almost the whole year round. The adult spider can be encountered from high summer to late autumn. The eggs (laid by the female) survive the winter in a cocoon. The young spiders hatch in the spring. | | |
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| 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 ... | | |
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| Geotrupes stercorarius | | ...ry. Their wing covers each have 7 long rows of weak spots. The beetle can make noises. with its rear hips.
The beetle prefers to live in forests. The adults fly at night close to the ground making a loud humming sound. In the spring males and females dig a 40 cm long underground tunnel for mating, which leads into several chambers, which can be reached through temporary tunnels. In the chambers, balls of dung are placed before the larvae as a future food supply. The side passages to the chamber... | | |
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| Gasteruptiidae | | ...wise.
The adult wasps are mainly found on umbelliferae flowers, mint, thistle or golden rod plants. Their larvae mostly live as parasites in the nests of some kinds of bees or wasps, for example, digger wasps or solitary wasps. The fertilized females lay their eggs in spring in the nests of their larvae’s hosts. This happens near the brood-cells which have adjacent food stores. The young larvae hatch after a few days and start eating the host’s eggs or larvae. Later on they feed on the store... | | |
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| Dune robberfly | | ...obberflies live in sandy places. They prey on other insects and are very good hunters. They often sit on the bare, hot sand waiting for their prey which they catch and sting in the air.
The dune robberfly is active from June to September. The females have a ring of spikes at the end of their ovipositors which they use to make a hollow in the sand to lay their eggs in. The larvae usually move deeper into the sand after hatching. | | |
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| Both males and females overwinter. In spring they mate. When it is time to lay eggs the female gnaws a tunnel into dead wood, up to 30 cm in length. At the end of the tunnel is a cell which is approximately 2.5 cm wide ; the female brings pollen and nectar here and lays... | | |
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| Mosquitoes | | ...orpha and the superfamily Culicoidea. Mosquitoes have existed for about 170 million years. From a total of approximately 2700 species worldwide, 104 species can be found in Europe, almost all of which live in Central Europe. In most species only the females suck blood. | | |
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| ...des of above 1500 metres. The body shape of mosquitoes varies but rarely exceeds 15 mm in length. Their bodies are slender, with relatively long legs. The wings are membranous and sometimes scaly. The head has 2 long antennae with many segments. The females also have a proboscis. The mouth parts of the males are not suitable for stinging. | | |
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| ...can reach a body length of 14 to 18 mm. It has a dark brown abdomen, the second segment of which has yellow, reddish-yellow or ochre wedge-shaped spots. The drone fly has black compound eyes, which are connected by hairy bends above and below. The females’ eyes are clearly separated, while the males’ meet. | | |
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