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Macaria fusca

Macaria fusca

A species of Macaria

Macaria fusca is a moth of the family Geometridae first described by Carl Peter Thunberg in 1792. It is found in Alps, Fennoscandia, the Ural, northern Yakutia and Kamchatka. It is found at elevations of up to 3,400 meters. The wingspan is 14–18 mm for males. Females have considerably smaller wings and can only fly with difficulty. Males are on wing from July to August and are day active. The larvae feed on the leaves of various low-growing plants, including Erophila verna and Viola calcarata.

General Info About Macaria fusca
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Attributes of Macaria fusca
Habitat
Mountain pasture; flowering meadow; marsh
Adult Food Sources
Nectar from various flowering plants, honeydew secreted by aphids, plant sap from wounds in trees, decaying fruit juices, moisture from puddles for hydration
Larva Food Source
Leaves of alder (alnus sp.), leaves of birch (betula sp.), leaves of willow (salix sp.), leaves of poplar (populus sp.), leaves of larch (larix sp.)
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
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Species Status of Macaria fusca
Stable population; common
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Distribution Area of Macaria fusca
Alps, Fennoscandia, the Ural, northern Yakutia, Kamchatka
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Life Cycle of Macaria fusca
Egg The embryonic macaria fusca begins its life cycle as an egg, which is often laid on plant material. The egg is small, oval, and typically camouflaged to blend in with its surroundings, providing protection from predators.
Larva Upon hatching, the larva emerges with a primary focus on feeding. These caterpillars have a segmented body with chewing mouthparts for consuming foliage. During this stage, macaria fusca will molt several times and increase significantly in size.
Pupal The macaria fusca then forms a pupa, entering a non-feeding, restful period. Within this protective casing, it undergoes a drastic transformation. The pupal stage is a time of reorganization, where the larval body parts are rearranged into adult structures.
Adult Emerging from the pupa, the adult macaria fusca’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.
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Predators of Macaria fusca Larvae
Birds, rodents, spiders, predatory insects
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Scientific Classification of Macaria fusca
Tips for Finding Macaria fusca
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Youth Habitat of Macaria fusca
Forests and Woodlands, Grasslands and Prairies
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Adult Habitat of Macaria fusca
Forests and Woodlands, Grasslands and Prairies
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How Can You Attract Macaria fusca
For macaria fusca, light traps are more commonly used than bait or food traps, since many adult moths are attracted to light sources at night.
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Habitat Preferences of Macaria fusca Through Different Life Stages
The eggs of macaria fusca are typically found on the underside of leaves from their preferred host plants. Caterpillars, which undergo several molts, are commonly located on tree branches, camouflaging themselves among the foliage. Pupae might be discovered in a sheltered place, often in leaf litter on the ground or in bark crevices. Adult macaria fusca, nocturnal in habit, rest during the day on tree trunks and can be found near light sources at night. To search for these insects, examine host plants for eggs, scan trees and shrubs for caterpillars, search the ground and crevices for pupae, and use lights to attract adults after dark.
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How and Where Can You Find Macaria fusca at Different Life Stages
Egg Macaria fusca eggs are often laid on the underside of leaves of the host plant. Inspecting these areas delicately, especially where the leaves join the stems, can reveal clusters of tiny eggs.
Larva Macaria fusca larvae, commonly referred to as caterpillars, are found on or near their food plants. Searching the foliage of known host plants, examining both the tops and undersides of leaves, can lead to finding macaria fusca larvae.
Pupal Macaria fusca pupae may be attached to twigs, leaves, or other structures, often in a concealed location like under loose bark or leaf litter. Careful examination of these habitats can uncover the camouflaged pupae.
Adult Using a light trap after dark can attract macaria fusca adults, making them easier to find. A white sheet lit by a strong light can also be effective, as moths will land on the sheet and be visible for identification and study.
Are Macaria fusca harmful?
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Harmful Effects of Macaria fusca
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Agricultural Pests

When present in large numbers, larvae of macaria fusca can cause significant defoliation, stunting plant growth and reducing photosynthesis. In minor infestations, the impact is less drastic but can weaken host plants over time, affecting agricultural yield and potentially human food resources.

More Effects of Macaria fusca

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