Pachybrachius fracticollis
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Pachybrachius fracticollis |
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| ( Schilling , 1829) |
Pachybrachius fracticollis is a bug fromthe Rhyparochromidae family .
features
The bugs are 4.6 to 5.8 millimeters long. They can be recognized as a representative of the genus Pachybrachius by the pronotum that is typically constricted behind the middle and has no extended margins . One can distinguish the species from the very similar Pachybrachius luridus by the short and inconspicuous fuzz of the pronotum and by the single row of thorns on the thighs ( femora ) of the front legs. In addition, the pronotum is somewhat more elongated than in the similar species. The adults are always fully winged (macropter).
distribution and habitat
The species is widespread in Europe with the exception of the far north and is also absent in the southern Mediterranean. To the east, the distribution extends to Siberia and the Caucasus. It was introduced to North America by humans.
The species is widespread in Central Europe, but less common in the south than in the north. However, it is nowhere common and only occasionally occurs locally in large numbers. They are found mainly in the lowlands; in the Alps hardly more than 900 meters above sea level. In the UK it is local and patchy in England and Wales. A wide variety of humid habitats such as moors, wet meadows or the edges of water bodies are populated.
Way of life
The animals live on sour grass plants (Cyperaceae), such as cotton grasses ( Eriophorum ) and sedges ( Carex ), where they suckle both the ripening seeds and the plants themselves. The adults are found on top of the plants, especially in wet locations. Older nymphs mostly live near the ground. The adults can fly and are attracted by artificial light, especially during the mating season at night. The adults overwinter mainly in litter in dry places. Mating takes place from May to early June. The females lay their eggs one by one in moist soil litter, between moss or in the stems of the food plants. After six to eight weeks, at the earliest from the end of July, otherwise from August, the adults of the new generation appear.
supporting documents
Individual evidence
- ↑ a b c d e Wachmann: Wanzen , vol. 3, p. 148f
- ↑ a b Pachybrachius fracticollis. British Bugs, accessed June 21, 2014 .
literature
- Ekkehard Wachmann , Albert Melber, Jürgen Deckert: Bugs. Volume 3: Pentatomomorpha I: Aradoidea (bark bugs), Lygaeoidea (ground bugs, etc.), Pyrrhocoroidea (fire bugs) and Coreoidea (edge bugs, etc.). (= The animal world of Germany and the adjacent parts of the sea according to their characteristics and their way of life . 78th part). Goecke & Evers, Keltern 2007, ISBN 978-3-937783-29-1 .
Web links
- Pachybrachius fracticollis in Fauna Europaea. Retrieved June 21, 2014