Nordic apple bug
| Nordic apple bug | ||||||||||||
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Nordic apple bug ( Lygocoris rugicollis ) |
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| Scientific name | ||||||||||||
| Lygocoris rugicollis | ||||||||||||
| ( Fallén , 1807) |
The Nordic apple bug ( Lygocoris rugicollis ), also called northern or green apple bug, is a bug from the family of soft bugs (Miridae).
features
The Nordic apple bug reaches a body length of 5.5 to 7.0 millimeters. Like all members of the genus Lygocoris , the species has fine, inconspicuous pale-brown tibial spurs and, when viewed at high magnification, shows an interruption in the keel between the compound eyes . The pronotum is fairly straight margins. These features can be used to distinguish the animals from other types of bugs that are just as green. The pronotum of the Nordic apple bug is heavily wrinkled and clearly visible hairs are missing on the entire upper side. The side edge of the animals is often colored yellow.
Occurrence
The species is distributed holarctic and occurs in Europe with the exception of the south. The distribution area extends further to the east as far as Siberia, which also includes northern North America. In Central Europe the species does not occur everywhere and is only common locally, especially in the mountainous regions. The adults appear from the end of May to June and July, depending on the conditions, a second generation also occurs from August to September.
Way of life
The herbivorous species colonized deciduous trees and was originally only found on willows ( Salix ) ( Sal willow ( Salix caprea ), ash willow ( Salix cinerea ), purple willow ( Salix purpurea ) and basket willow ( Salix viminalis )) and a few others Genera such as alder ( Alnus ) can be found, but has also been found regionally in various cultivated plants such as. B. Cultivated apple ( Malus domestica ), currants ( Ribes ). In particular in Western and Northern Europe influenced by the Atlantic, it is of economic importance on apples, but has lost its importance in the last 50 years or so. Sucking the nymphs in April and May damages young shoots, which subsequently die off. In addition, the fruits are impaired in their appearance by the sucking. The adult animals cause brown spots on the leaves by sucking. The females pierce their eggs into the woody parts of the food plants, such as the shoots and the older wood.
supporting documents
- ^ Lygocoris rugicollis. British Bugs, accessed October 3, 2013 .
- ↑ a b Ekkehard Wachmann , Albert Melber, Jürgen Deckert: Bugs. Volume 2: Cimicomorpha: Microphysidae (lichen bugs), Miridae (soft bugs) (= The animal world of Germany and the adjacent parts of the sea according to their characteristics and their way of life . 75th part). Goecke & Evers, Keltern 2006, ISBN 3-931374-57-2 , p. 84 f .
Web links
- Lygocoris rugicollis at Fauna Europaea. Retrieved September 2, 2013