European regional assessment: Least Concern (LC) EU 27 regional assessment: Least Concern (LC) Calopteryx virgo is a common and widespread species in. Confined to southern half of Ireland. Adults fly during June and July. This and the Banded Demoiselle are the largest Irish damselfly species. The Beautiful. Calopteryx virgo virgo Trusted • Calopteryx virgo Trusted more taxon associations Calopteryx virgo britannica is a subspecies of the Beautiful Demoiselle.
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Habitat Mainly found along streams and rivers, particulary those with sand or gravel bottoms. Mainly found along streams and rivers, particulary those with sand or gravel bottoms. Above all streams in uncultivated pastures, where no regular mowing is taking place, according to the animals are not habitable.
The body of the larvae shows only a relatively small adjustment to the fast-flowing waters of their habitat. Skip to main content. The body colour is metallic blue-green in the male and green with a bronze tip in the female.
A distinct riparian vegetation also plays a role as a windbreak. Only in very rare cases the larvae are present in stagnant water. Females fly over during the day, the waters in search of suitable nesting sites, the main activity of both sexes such as hunting, advertising, mating and egg laying occurs in the warm midday hours.
Calopteryx virgo can reach a body length of 49—54 millimetres 1. Compared to other damselflies demoiselles larvae fall immediately on the other hand, due to their much shorter mean gill lamella. In intensively calopterux agricultural areas with a regular input of manure as fertilizer is a few meters wide can prevent extensive or unmanaged riparian strips one Einschwemmung and thus act against eutrophication.
According to this situation it is in Germany in the Red Data Book classified as firgo in some falopteryx it is even in danger of extinction. The larval development of the Blue-winged demoiselle takes into Middle Eastern waters, usually between six and nine weeks, mainly due to the preference of cooler waters, it is usually somewhat longer than that of the banded demoiselle. The breeding habitats are similar to the Larval habitat, these are cool, shady water-courses largely with a more or less strong current and near-natural vegetation and bank structure.
Beautiful Demoiselle Calopteryx virgo male female. The body is not flattened but very slim and turning around, the legs are long and have its end with strong claws, with which it can be stated in the vegetation. This species presents an evident sexual dimorphism in colour pattern. Description Beautiful Demoiselle Calopteryx virgo male female. The blue-winged demoiselle lives mainly near small to medium-sized streams and creeks. The flight is fluttering, butterfly-like.
Throughout the day there are males in sunlit waters are already in the early morning in Central Europe between 7.
Then in turn followed by a period of hovering flight and only if the female is sitting there and so his willingness to mate signaled it comes to mating. The radius of action and thus the distance between breeding, hunting and rest area is in the males of 20— meters and is therefore very small, the females were observed, however walking distances of up to four miles per day. The eggs are laid in the stems of aquatic plants in the water level and below, where the female can submerge up to 90 minutes.
You are here Beautiful Demoiselle. Males who do not occupy spots can keep themselves in the vegetation on the shore and try to mate with fly to females or to fill vacant spots.
The following other wikis use this file: This aging period usually lasts about 10 days, after which they return to the waters. Studies have shown that this might modify the relationship between univoltine and semivoltinen larvae within vrgo body of water and clear in the course of the river and increase the water temperature moves toward univoltiner larvae.
On the North African Mediterranean coast, its southern populations in Morocco and Algeria can be found. The final stage Fstage larvae are 3.
Beautiful Demoiselle |
The water must not be nutrient rich eutrophic. Mostly found west of a line between Liverpool and Folkestone and in southern Ireland. Males are territorial, perching in bankside plants and trees, waiting for females  or chasing. Unlike the adults of the banded demoiselle you meet those of the beautiful demoiselle but also in forest clearings, but very rarely on the banks of larger ponds.
File:Beautiful Demoiselle Calopteryx virgo male female.jpg
They can be found on submerged plants such as waterweed Elodea sp. This is mostly meadow and pasture streams in the calopterxy, they rarely pass through the forest. Males can stray well away from water, females live away from water unless egg-laying or seeking a mate. The waters are usually in the immediate vicinity of forests. It bulges on the upper part of the egg slightly, while the lower part deforms concave. This sensitivity qualifies it in water chemistry as a bioindicator for the assessment of water quality.
Even a partial thinning of trees and shrubs should be performed.
Beautiful demoiselle – Wikipedia
Already after a few days deprivation increases mortality rapidly, and after again prevail acceptable oxygen conditions, it is still too long after, birth defects and an increased mortality rate among affected animals. As resting places, the animals need trees and shrubs, often resting on high herbaceous plants such as the large nettle Urtica dioica. In addition, the egg of the banded demoiselle at the front end a funnel-like appendix unknown object, which projects at the inserted egg outwardly from the plant stem.
He may receive a water surface is not completely from the plants of the marginal vegetation to be overgrown, this is done mainly by fast-growing plants such as Meadowsweet Filipendula ulmariathe stinging nettle Urtica dioica or Himalayan balsam Impatiens glandulifera. At night the animals as well as sit in the early morning sun-drenched coves in the vegetation at these sites, they also spend the night.
The habitat that the adults occupy, corresponds to the nearby larval habitat. The eggs, in which the embryos develop, are on average about 1.