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Silvery Arches

Silvery Arches

Polia hepatica

A species of Polia

Polia hepatica, the silvery arches, is a moth of the family Noctuidae. The species was first described by Carl Alexander Clerck in 1759. It is found in temperate Europe and east across the Palearctic to Siberia and Korea. It is not present in northernmost Fennoscandia and the southern parts of the Iberian Peninsula, Italy and Greece. It is also absent from Japan. The wingspan is 39–47 mm. Forewing paler than in advena, more bluish grey, sometimes blue green, without dark suffusion except in median area ; stigmata as in advena, the orbicular pale and conspicuous; submarginal line preceded by black brown scales on both folds not forming wedge-shaped marks, and not indented on the submedian fold; hindwing fuscous with dark discal lunule and pale postmedian line. — the form obscurata Stgr. from Amurland is smaller and darker; hepatica Hbn. represents the form with blue green coloration and brown suffusion; in suffusa Tutt the median area is more concisely brown than the rest of the wing. — Larva reddish brown, with fine dark and light mottling; dorsal line slender, white, edged with black; lateral line broader; head pale brown.

General Info About Silvery Arches
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Attributes of Silvery Arches
Colors
Brown
Black
Gray
White
Habitat
Wooded heathland; moorland; open woodland; birch bog; blueberry forest; moist meadow valley
Adult Food Sources
Flower nectar, plant sap, fruit juices, honeydew, water with dissolved sugars or salts
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Siphoning mouthparts
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Species Status of Silvery Arches
Stable population; common
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Distribution Area of Silvery Arches
Europe, Siberia, Korea
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Life Cycle of Silvery Arches
Egg The egg stage of silvery Arches begins upon oviposition. The eggs are usually spherical or ovate, with a protective chorion. The color, size, and number vary, but they are often minute and inconspicuous with a specialized structure for the developing larva inside.
Larva As larvae, silvery Arches undergo several molts. Initially small and possibly translucent, they grow substantially, often changing colors with each instar. This stage is solely dedicated to feeding and growth, with the larva not resembling the adult silvery Arches.
Pupal The pupal stage is a time of transformation for silvery Arches. Encased in a chrysalis, they do not eat or move much. Here, they reorganize internally, developing wings and adult structures. The pupa may be camouflaged or adorned with defensive structures.
Adult Emerging from the pupa, the adult silvery Arches’s development is marked by the presence of wings and functional reproductive organs. The body is fully formed and hardened, and the adult is mobile, focusing on reproduction and, in some cases, feeding on nectar or other substances.
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Interesting Facts About Silvery Arches
Silvery Arches can alter its heart rate to avoid predation by echolocating bats, showcasing an impressive defensive adaptation.
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Scientific Classification of Silvery Arches
Tips for Finding Silvery Arches
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Youth Habitat of Silvery Arches
Forests and Woodlands, Grasslands and Prairies, Urban and Suburban Areas, Agricultural and Cultivated Areas
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Adult Habitat of Silvery Arches
Forests and Woodlands, Grasslands and Prairies, Urban and Suburban Areas, Agricultural and Cultivated Areas
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How Can You Attract Silvery Arches
Sugar or fermented fruit bait traps might be used to attract adult silvery Arches, while host plants can be used to attract and feed the larvae.
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What is the Best Weather to Observe Silvery Arches
Calm, warm, and humid nights with little to no moonlight are optimal conditions for finding adult silvery Arches as they are more likely to be active. Larvae are less affected by these conditions and can be searched for during daylight hours in appropriate habitats.
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How and Where Can You Find Silvery Arches at Different Life Stages
Egg Silvery Arches eggs are typically laid on host plants. To find them, examine the leaves and stems of potential host plants for small clusters or rows of eggs.
Larva Silvery Arches larvae can be found on or near their host plants. Look for them by inspecting the leaves for signs of feeding, such as holes or chewed edges, and check beneath the plant debris.
Pupal Silvery Arches pupae may be in the soil or leaf litter, so gently sift through the substrate near host plants or known larval feeding areas to uncover them.
Adult Adult silvery Arches can be attracted to light sources, so set up a light trap with a bright light in a dark area to draw them in. Using a sweet bait mixture applied to trees or posts can also lure them for closer observation.
Are Silvery Arches harmful?
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