MACULINEA NAUSITHOUS PDF

IUCN Red List Categories and Criteria EU conservation status Conservation status assesses every six years and for each biogeographical region the condition of habitats and species compared to the favourable status as described in the Habitats Directive. The map shows the assessments as reported by EU Member State. Assessments are further detailed in the summary document available behind the link below. Favourable: the species is viable and maintaining itself on a long-term basis, its natural range is not reduced, and it has a sufficient large habitat. Unfavourable-Inadequate: the species is not as critical as being unfavourable-bad, but still requires significant conservation and restoration measure to make it viable in the long-term, or to enlarged its current range, or to improve the quality and availability of its habitat.

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Phengaris nausithous Host plants: The eggs are deposited onto already reddish blossoms of Sanguisorba officinalis. The young caterpillars live in the flower head. In late summer the larvae are adopted by ants of the genus Myrmica and carried in the nests especially Myrmica rubra where they finish their development in next summer.

There are also hints on larvae overwintering twice. Habitat: Maculinea nausithous colonizes mesophilous to wet meadows and fens, which are unmown from early summer to the early autumn early or mid-June to mid-September and host flowering plants of Sanguisorba officinalis at flight time.

Maculinea nausithous is sometimes found most common in young fallows and most regularly on meadows on the edge of bogs. It can survive long on fairly small areas of less than square metres, for example in the edge of ditches. Life cycle: The adults occur from late June to August in one generation.

Eggs are deposited into already reddish flower heads. The young caterpillar is then adopted by the host ant. Like other Maculinea species and most other Lycaenidae, they have glands, that produce a sugary secretion. The caterpillar lives then in the ant nest until the hatching of the butterfly.

Endangerment: strongly endangered Endangerment factors: Maculinea nausithous is endangered by grassland intensification main threat , overbuilding, drainage or succession. But measures like planting whole brooksites with bushes and trees have already eradicated many populations. Otherwise, it occurs from eastern France here locally across Central Europe southern half of Germany, the Netherlands, northern Switzerland, northern Austria, Czech Republic, southern Poland, etc.

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