Edge ring mother-of-pearl butterfly
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Ringed mother-of-pearl butterfly ( Boloria eunomia ) |
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| Boloria eunomia | ||||||||||||
| ( Esper , 1799) |
The ringed mother-of-pearl butterfly ( Boloria eunomia ) is a butterfly (day butterfly ) from the noble butterfly family (Nymphalidae).
features
The moths reach a wingspan of 28 to 40 millimeters. The males have orange-red wing tops with fine, black transverse lines, dots and angular spots. The upper sides of the wings of the females are colored yellow-brown and have a stronger black markings. In addition, the wings are sometimes more, sometimes less darkly pollinated. The undersides of the hind wings are patterned creamy white and orange in both sexes. They do not have mother-of-pearl stains. On the outer edge there are a number of angular spots and behind them cream-colored, black-edged ring spots.
Edge ring mother-of-pearl butterfly
△ Border ring mother-of-pearl butterfly
The caterpillars are about 23 millimeters long. They are gray-brown in color and have fine, light-colored dots all over the body. They have short, brown thorns.
Similar species
- Meadowsweet mother-of-pearl butterfly ( Brenthis ino )
Occurrence
The animals occur sporadically in almost all of Europe , but especially in Scandinavia and Russia , as far as the northeast of China and North America . In Germany they are found particularly in the foothills of the Alps and occasionally in the low mountain ranges. In many places they are rare (especially in the north of eastern Germany ) or have already completely disappeared because their habitats are being destroyed by drainage or afforestation.
The animals live on wet meadows and on the edge of moors . It is important that the wet meadows are mowed only once a year in autumn, if at all.
Flight and caterpillar times
The moths fly in one generation from late May to early July.
Food of the caterpillars
The caterpillars feed on the leaves of the snake knotweed ( Persicaria bistorta ), and more rarely on other species of knotweed .
development
In contrast to other mother-of-pearl butterfly species, the females lay their eggs in groups of 4 to 20 on the underside of the leaves of their forage plants. The hatching caterpillars initially live in company and stay on the underside of the leaves. They hibernate as young caterpillars to live hidden on the ground the next spring. Only at night do they climb up on the plants to eat. Presumably the caterpillars hibernate a second time in some areas before they pupate. They transform into brown-gray tumbled dolls that do not have silver stains. But there are also butterflies that have newly hatched in autumn.
swell
Individual evidence
- ↑ a b c d e f Heiko Bellmann : The new Kosmos butterfly guide. Butterflies, caterpillars and forage plants. Franckh-Kosmos, Stuttgart 2003, ISBN 3-440-09330-1 , p. 162.
- ↑ a b Tom Tolman, Richard Lewington: Die Tagfalter Europäische und Nordwestafrikas , p. 158 f., Franckh-Kosmos Verlags-GmbH & Co, Stuttgart 1998, ISBN 3-440-07573-7
- ^ W. Düring: Randring Perlmutterfalter. In: Butterfly in Rhineland-Palatinate. BUND RLP, September 5, 2018, accessed on May 9, 2020 (German).
