Alpen-Mosaikjungfer
| Alpen-Mosaikjungfer | ||||||||||||
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Alpine damsel ( Aeshna caerulea ), male |
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| Scientific name | ||||||||||||
| Aeshna caerulea | ||||||||||||
| Ström , 1783 |
The azure hawker ( Aeshna caerulea ) is a dragonfly from the family of aeshnidae (Aeshnidae) which the subordination of the dragonfly belong (Anisoptera). The Alpen-Mosaikjungfer is a large dragonfly with a wingspan of a maximum of 9 centimeters, which in Central Europe can only be found in the moor areas of the Alps and the Black Forest .
features
The Alpen-Mosaikjungfer reaches wingspans of 8 to 9 centimeters. The chest section ( thorax ) of the animals is colored black and has blue side and dorsal stripes. The abdomen is also black with blue markings.
Way of life
The Alpen-Mosaikjungfer is active from July to August and can only be found on raised bog waters of the Alps and the Black Forest at altitudes over 1000 meters above sea level. The animals develop a special activity especially in the mornings and afternoons; around midday they can be found resting and sunning on tree trunks and rocks.
The males fly across the water in search of females. Mating begins above the water and mostly ends in the vegetation. The eggs are pierced into the peat floor.
Larval development
Almost nothing is known about the development of the larvae . It is believed that they live in the benthos on the bottom of the water and only come out at night.
threat
This dragonfly, like many other types of bog, is losing its habitat, especially as a result of the increasing destruction of the moor waters, especially the drainage of the same. Above all, their very limited habitat makes it impossible to use other habitats . Although large parts of its habitat are under nature protection, especially in the Black Forest, and the living conditions have not noticeably changed, it has also disappeared in many places there. It is classified in Germany's Red List in endangerment category 1 - critically endangered.
literature
- H. Bellmann: Observe dragonflies - determine . Naturbuch Verlag, Augsburg 1993, ISBN 3894401079
- G. Jurzitza: The Kosmos dragonfly guide . Franckh-Kosmos Verlags GmbH & Co., Stuttgart 2000, ISBN 3440084027
- M. Muth (2003): Aeshna caerulea in the Oberallgäu district: population situation, development waters and endangerment (Odonata: Aeshnidae). Libellula Supplement 4: 71-97
- G. Peters: The noble dragonflies of Europe - Aeshnidae . Die Neue Brehm-Bücherei Vol. 585, Ziemsen, Wittenberg Lutherstadt 1987, ISBN 3740300507
Web links
- Aeshna caerulea inthe IUCN Red List of Threatened Species 2013.1. Posted by: Clausnitzer, V., 2007. Retrieved September 21, 2013.