Hylaea fasciaria
Two Bindiger coniferous forest clamps ( Hylaea fasciaria )
The two Bindiger coniferous forest clamps ( Hylaea fasciaria ) is a butterfly (moth ) from the family of the tensioner ( Geometridae ). The moth comes in two different colors, one of which is believed that it could be explained by two different ways.
- 5.1 Literature
Features
The moths reach a wingspan of 32-39 millimeters. The format fasciaria has a rust-red wing color, the formatter prasinaria has green colored wings. Both have on the fore wings about between periods each a slightly irregularly curved, thin transverse band, which included therein midfield usually has a slightly darker base color. In the rust-red form, the napkins are brightly colored, with green coloration varies from light over beige to light brown. Additionally, in the green shape of the front edge of the forewing is slightly colored in the same color, the outer edge of both pairs of wings is fringed well in this color. The hind wings are somewhat lighter colored and usually carry a more or less clear, bright cross- line in the second half of the wing. Besides the two main forms, there are color variations with a different design of the green and gray -colored brown-colored moths.
The caterpillars have a light brown or brick-red to black -gray color without a noticeable markings. The caterpillars of the red form have a slimmer and straighter long lower body than the green form.
Occurrence
The animals come from the British Isles over the temperate Europe east to the Altai and Sayan Mountains ago. To the north extends the distribution to Lapland, the Kola Peninsula and Sacha, the southern limit of distribution covers the northern Mediterranean, the Balkans and the Caucasus.
The green form is mainly found in shady and moist, middle-aged to old spruce forests in the mountains, whereas the red form preferred temperature favored sand - pine stands occupied in flat and hilly country.
Way of life
The nocturnal Imagines rest during the day on the trunks and branches. They can be attracted by artificial light. The caterpillars are solitary and preferred sitting on branches in the lower portions of food plants. They overwinter half grown.
Flight times and caterpillars
The moths fly in one generation from late May to late August. The caterpillars are found from July to June and after hibernation. In warm areas, a second generation of flies, and this relates to the red color variant.
Food of the caterpillars
The caterpillars feed on the green form Common Spruce ( Picea abies ), European larch (Larix decidua) and silver fir (Abies alba), the rust- red form feeds on pines ( Pinus ). Be eaten only needles that grow in the shade. When grown, you can feed the caterpillars of both forms with all mentioned plants.
Threats and conservation
The species is widespread in Central Europe and frequently and not at risk.