Riband Wave
Breitgebänderter perennials tensioner ( idaea aversata )
Called The Breitgebänderte perennials tensioner ( aversata idaea ), also deciduous small clamps or mouse ear tensioner ( Geometridae ), a butterfly (moth ) from the family of the tensioner. It is a common in Central Europe and in coloring and drawing very variable species with numerous synonyms and formae.
- 6.1 Notes and references
- 6.2 Literature
Features
The moths reach a wingspan of 23-31 millimeters. The second generation is 20 mm wingspan usually much smaller. The wings are in the ground color whitish yellow to ocher- colored yellow. There are also copies in front with an orange tone in the coloring, which have the tendency to melanism. The drawing elements stand out because of the dark brown color usually significantly from and are drawn sharp. On the fore wings are three on the hind wings two transverse lines available. In some specimens the wavy line as a dark shadow is still visible. The outer transverse line bends near the leading edge normally starting with a significant angle to the outside. In some specimens, the area between middle and outer transverse line is filled in dark brown. Since this form does not occur in the related species, such specimens are to recognize more clearly than aversata idaea. The Diskalflecke are small and inconspicuous, they may be absent. They are on the front wings saumwärts the middle transverse line on the hind wings root downward. At the outer edge there are small Saumpunkte that strongly ausgelängt and can form almost a narrow margin line.
The egg is oval with weak surface structures. It is initially yellowish - reddish, later slightly darker and gets red spots. Shortly before hatching the Eiraupen it turns dark brown with pale spots.
The caterpillar has a stocky body, its diameter decreases toward the front end a little. It is usually gray-brown with strong constrictions. In the four middle segments diamond bright spots are developed. The belly is usually lighter in color. What is striking is the relatively small head.
The doll measures 8.5 to 9.8 mm in length and 2.8 to 3.3 mm in diameter. It is brown in color, but little shining, the elytra are greenish. The tongue-shaped cremaster has curved sides. The end is rounded when viewed from above, rather tapering from the side. Dorsal runs at its base a transverse groove. The four pairs of hook-shaped bristles are all approximately the same length and significantly shorter than the cremaster itself.
Similar Species
- Idaea rubraria (Staudinger, 1901)
- Idaea straminata ( Borkhausen, 1794)
- Idaea deversaria ( Herrich -Schäffer, 1847)
Geographical occurrence
The Breitgebänderte perennials tensioner has a large distribution area, which includes almost all of Europe to the Urals. Only on the Iberian Peninsula, the deposits are patchy isolated. Also on the Balkan Peninsula there are some areas in which the species is not yet proven. The northern boundary runs in Fennoscandia in northern Sweden and Finland. Excluded are also the most northern parts of Russia and some areas of Russia north-west of the Caspian Sea. In North Africa ( eastern Algeria and Tunisia) there is a smaller occurrence, however, a separate subspecies belongs ( idaea aversata indeviata Prout, 1935). Outside of Europe, the distribution area attracts over patchy deposits in northern Turkey to the Caucasus, from there via Central Asia, Siberia and northeast China to Japan. The occurrence in Japan, however, regarded as a distinct subspecies ( japonica idaea aversata Inoue, 1955). Noteworthy is a small isolated occurrences in southern Turkey.
In Central Europe the species occurs from sea level to 1500 m altitude before, in southern Europe up to 1700 m and in Turkey and the Central Asian mountains to 2200 m altitude.
This habitat of Breitgebänderten perennials tensioner include deciduous and mixed forests, forest edges, hedgerows, gardens and parks, everywhere where fall foliage is not removed. It is almost everywhere quite frequently.
Phenology and life
Idaea aversata forms depending on the location from one to three generations per year. In Northern Europe and in the mountainous regions of Central Europe ( about 600 m) in a generation is formed, fly their moth from June to August. In southern Europe, and in favorable or lower altitudes in central Europe two overlapping generations are formed usually fly their Falter May to September. In exceptional cases and under very favorable circumstances, even a partial third generation may develop, as moths fly to the end of October. The moths rest during the day in the vegetation or sit on trees and walls. They are nocturnal and fly to artificial light sources. They suck nectar on the flowers of grasses such as Common Bulrush ( Eleocharis palustris ) and Buddleia ( Buddleia ) and come to the bait. From the pheromone components of various acetates of alkenes were isolated.
Live Caterpillars polyphagous on dried leaves of plants of the herb layer and hardwoods, among others bilberry (Vaccinium myrtillus), heather ( Calluna vulgaris), alder ( Alnus ), annual bluegrass ( Poa annua), the ordinary dandelion (Taraxacum officinale), plantains ( Plantago ), cow-wheat ( Melampyrum ), clematis (Clematis ), broom ( Genista ), Scotch broom ( Cytisus scoparius ), Common chickweed ( Stellaria media ), Labkräutern ( Galium ), forget- me-nots ( Myosotis), Primroses (Primula ), hazel (Corylus ), Real Avens ( Geum urbanum ), Water Avens ( Geum rival ), Poterium, currants (Ribes ), Vogelknöterichen ( Polygonum aviculare ) and sorrel ( Rumex ). In breeding also catkins Tatar honeysuckle Campanula were of Real weeping willow (Salix babylonica ) and Meadow Sage (Salvia pratensis ), ( Lonicera tatarica ), hawthorns (Crataegus ), blackthorn (Prunus spinosa), birch (Betula ) and Mary Bellflower ( medium) eaten. The caterpillars development is asynchronous strong. The caterpillar overwinters.
System
The species was described in 1758 by Carolus Linnaeus, under the name Phalaena Geometra aversata first time scientifically. Due to the high variability in the color and the type of the drawing has been described still further eight name. In addition, numerous formae for the various types of drawings have been provided. Currently three subspecies are distinguished: the nominotypical subspecies idaea aversata aversata ( Linnaeus, 1758), idaea aversata indeviata ( Prout, 1929) from North Africa and idaea aversata japonica ( Inoue, 1955) from Japan. The previously been summarized also as a subspecies population griseocorsa damage Werda, 1929 by Corsica was reunited Axel Hausmann with the nominotypischen subspecies.
Endangering
The Breitgebänderte perennials tensioner is not at risk in Germany. He is currently one of the most common species of the genus idaea.