Engrailed (moth)
Pip Bindiger beef tensioner ( Ectropis crepuscularia )
The prongs Cohesive beef tensioner ( Ectropis crepuscularia ) is a moth of the family of tensioner ( Geometridae ). Another German common name for this species is plum tensioner with this name but the Schlehenspanner ( Angerona prunaria ) is actually referred to interchangeably.
Some authors include the blueberry tensioner ( Ectropis bistortata ) as a synonym of the prongs cohesive beef tensioners, this hypothesis is disputed.
- 6.1 Literature
Features
The gray to off-white wings are covered with brown to dark gray scales, their coloring but not so much on the color stands out as the otherwise very similar Argyle beef tensioner ( Peribatodes rhomboidaria ). Quite often occur even darker moths. A slightly jagged, white wave line, accompanied dark inside, consists of the forewings continued on the hind wings. The prongs Cohesive beef tensioner reaches a wingspan from 38 to 45 millimeters.
Subspecies
- Ectropis crepuscularia crepuscularia
- Ectropis crepuscularia abraxaria
Occurrence
In forests of all types, marshes, parks and gardens of the prongs Cohesive beef tensioner in Northern and Central Europe is to be found, but the north he comes only sporadically. Adult moths can be observed from March to September, they fly at night and are attracted to the light.
The species is distributed from the British Isles through Central and Eastern Europe to East Asia. In North America it occurs also in appearance. The southern limit of distribution, the western Mediterranean region ( with the Balkan countries ), Asia Minor and the Caucasus ( to Kazakhstan) dar. the north, the area of distribution ends at the height of the Arctic Circle.
Nutrition
The gray caterpillars feed very versatile, including deciduous and coniferous trees, shrubs and low plants. They can be found from May to July and August to September.
There are two generations of the prongs cohesive beef tensioner per year. The flight time of the first generation lasts from March to May, while the second flies from June to September. The wintering pupae of the second generation. In case of very bad weather conditions or adverse conditions, only one generation per year occurs.