CALOPTERYX VIRGO PDF

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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They chase passing insects, often returning to the same perch. 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.

Immature males show brown wings, as the metallic blue wing color develops only with age.

Calopteryx virgo Caalopteryx of Germany. Richard Bartz Pages with maps. The following other wikis use this file: 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.

Long ‘horn-like’ antennae and long thin legs of the larva clopteryx this as a demoiselle. This page was last cqlopteryx on 21 Januaryat The larvae are much more sensitive to changes in habitat than the banded demoiselle, especially to temperature fluctuations. Description Beautiful Demoiselle Calopteryx virgo male female.

It climbs here unlike almost all other species of dragonflies upside down on the stem down and stabs the eggs with the egg-laying apparatus ovipositor almost vertically into the stems. By using this site, you agree to the Calopteryyx of Use and Privacy Policy. Males are territorial, perching in bankside plants and trees, waiting for females [7] or chasing.

This species prefers unlike the banded demoiselle, mainly the cooler and shadier areas of the water.

The wings are also traversed by a dense network of veins. Richard Bartz Usage on fr. Libellenart aus der Familie der Prachtlibellen Calopterygidae innerhalb der Kleinlibellen. Even a partial thinning of trees and shrubs should be performed. It is absent in areas corresponding to calopteyrx cities or industrial centers completely, and even in regions with strongly pronounced agricultural use it is to be found only rarely.

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File:Beautiful Demoiselle Calopteryx virgo male female.jpg

The larvae of the beautiful demoiselle develop over 10 to 12 stageseach of which takes place between a molt. Mainly found along streams and rivers, particulary those with sand or gravel bottoms. This species presents an evident sexual dimorphism in colour pattern. Throughout the day there are males in sunlit waters are already caloptreyx the early morning in Central Europe between 7. The body of the larvae shows only a relatively small adjustment to the fast-flowing waters of their habitat.

The water must not be nutrient rich eutrophic. It is brown and green algae, the water plant and the substrate is calopteryz. Among the factors that make a settlement of the water for the larvae of the blue-wing demoiselle impossible to include on the one calo;teryx, the channeling and obstruction of the same, go where the lost for the settlement of important aquatic plants.

Calopteryx virgo can reach a body length of 49—54 millimetres 1.

IUCN Red List of Threatened Species

Articles with ‘species’ microformats Wikipedia articles with Calopterjx identifiers. An important factor for the occurrence of blue-wing demoiselles is the oxygen in the water. The first adults of dragonflies emerge, depending on the weather, at the end of April to the end of September. The Banded Demoiselle C.

The waters are usually in the immediate vicinity of forests. The male leads in this way, the female to the nesting sites “Show flight” and circled it on the water once it has settled out. Waters with high levels of sediment and sludge, which is consumed vorgo bacterial decomposition of oxygen are, accordingly not as a habitat for the larvae. The distribution of the beautiful demoiselle covers all of Europe with the exception of the southwestern Iberian Peninsula, the Balearic Islands and Iceland.

After mating, the male releases the female again and again shows this is the nesting place, the female abdomen with girgo sit for a few seconds “post-copulatory rest” and then follows the male. They feed primarily on insect larvae such as those of the black flies, midges, stoneflies and mayflies, as well as amphipods. In addition, the larvae no holding facilities are against the current, and the algae and dirt particles settle to the gill lamellae are important for respiration.

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This page was last edited on 19 Augustat Hence it is extremely rare to find them in barren locations, flat expiring banks, or areas with a smooth stone floor. The eggs hatch after around 14 days. In the northern part of their range, such as in Norway and Finland, it is also found near medium-sized rivers or even larger streams. It is often found among fast-flowing waters.

Calopteryx virgomale left and female, right Linnaeus, Finding place: The body length is variable and highly dependent on environmental conditions. The color of the egg changes from a bright yellow when freshly laid eggs on a yellow-brown to reddish brown when older egg.

They also live in small natural lakes or ponds characteristic for limestones bedrock. Apart from the larvae of the demoiselles are difficult to distinguish from cslopteryx other, the apparent differences lie mainly in the bristles and the severity of the tracheal gills on their abdomen.

OpenStreetMap – Google Earth. The eggs are laid virg the stems of aquatic plants in the water level and below, where the female can submerge up to 90 minutes. Compared with the larvae of the banded demoiselle the larvae of the blue-wing demoiselle prefer quieter areas of the water, since slower flow causes a more effective absorption of oxygen under water.

Isarkanal, Munich, Germany Deutsch: Retrieved from ” https: As resting places, the animals need trees and shrubs, often resting on high herbaceous plants such as the large nettle Urtica dioica. But natural waters with low water pollution can be in a state of the animals is not available.