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Yellow-tail

Yellow-tail

Sphrageidus similis

A species of Sphrageidus, Also known as Swan moth

This species has a wingspan of 3.5 - 4.5 cm, the female usually noticeably larger than the male. All parts of the adults are pure white, apart from a bright yellow tip to the abdomen (larger in the female) and a small black or brown tornal mark on the forewing of the male.

Does the Yellow-tail cause allergies?
Allergenic
General Info About Yellow-tail
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Attributes of Yellow-tail
Colors
Brown
White
Habitat
forest; wetland complex
Larva Food Source
Leaves of broadleaf trees, elm, salix, populus, betula
Biting/stinging
Not reported
Allergy-causing
The Yellow-tail has special defensive behaviors that can trigger an allergic reaction. If there are serious reactions, seek IMMEDIATE medical attention.
Defensive attack
Not reported
Venomous
The Yellow-tail can induce toxic reactions varying in severity. Nevertheless, these toxins primarily target their prey and predators and are usually not fatal to humans.
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
The Yellow-tail feeds on plants, usually without causing significant harm. However, it's important to take the situation seriously if their numbers begin to increase significantly.
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Vestigial
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Species Status of Yellow-tail
It is distributed throughout Europe to the Urals, then east across the Palearctic to Siberia. It is also found in Sri Lanka.
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Distribution Area of Yellow-tail
Europe, Urals, Palearctic, Siberia, India, Sri Lanka
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Life Cycle of Yellow-tail
Egg During this initial stage, the yellow-tail is encapsulated within a protective casing. The egg is minute and color varies with species, often matching the surroundings for camouflage. Development inside is gradual, preparing for the larval stage.
Larva The larva, frequently called a caterpillar in yellow-tail, undergoes several molts, increasing in size conspicuously with each molt. The body is elongated with distinct banding or color patterns, and the primary function is voracious feeding.
Pupal Transformation into a pupa or chrysalis entails a sedentary phase. The yellow-tail is now encased in a cocoon, typically secured to foliage or other substrates. Significant internal restructuring occurs, setting the stage for the adult form.
Adult Emerging from the pupa, the adult yellow-tail'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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Adult Size of Yellow-tail
3.5 - 4.5 cm
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Predators of Yellow-tail Larvae
Birds, rodents, insects, spiders
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Predators of Adult Yellow-tail
Bats, birds, rodents
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Interesting Facts About Yellow-tail
The caterpillars of yellow-tail can change their skin color to match their environment, a remarkable form of camouflage to evade predators.
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Scientific Classification of Yellow-tail
Tips for Finding Yellow-tail
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Youth Habitat of Yellow-tail
Forests and Woodlands, Urban and Suburban Areas
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Adult Habitat of Yellow-tail
Forests and Woodlands, Urban and Suburban Areas
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Habitat Preferences of Yellow-tail Through Different Life Stages
The eggs of yellow-tail are typically laid on the underside of leaves, so searching the foliage of host plants is the first step. Caterpillars, which are the larvae, are found on branches, stems, and leaves, for they are herbivorous and feed on the vegetation. Pupae are usually hidden in crevices or leaf litter on the ground, hence inspecting the area around the host plants is necessary. For adult moths, nighttime searches around light sources or host plants are effective, as they are nocturnal and attracted to light. Each stage requires careful examination of the respective areas to observe yellow-tail in various developmental stages.
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When is the Best Time to Observe Yellow-tail
The suitable time to find yellow-tail varies depending on the stage. Caterpillar stages are often found in daytime by looking on host plants, while adults are typically found at night when they are attracted to light sources.
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What is the Best Weather to Observe Yellow-tail
Mild weather with minimal wind is generally best for finding yellow-tail. Excessive heat or cold can limit their activity.
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How and Where Can You Find Yellow-tail at Different Life Stages
Egg Eggs of yellow-tail are often laid in clusters on the underside of leaves of host plants. To find them, inspect the leaves of known host species carefully.
Larva Caterpillars of yellow-tail can be found on or near host plants. They may be identified by their specific feeding patterns on the leaves or by the presence of frass (insect excrement) on the ground beneath the host plants.
Pupal Pupae of yellow-tail may be located in crevices or in leaf litter near the host plants. They are sometimes found attached to the host plant itself or to nearby structures.
Adult Adult yellow-tail are usually active at night and are attracted to light sources. Setting up a light near a white sheet or using a bait trap with fermenting fruit can attract adults for observation or collection.
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Harmful Effects of Yellow-tail
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Allergenic
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Does the Yellow-tail cause allergies?

At the larvae stage, yellow-tail can cause allergies in humans through contact with its hair. While only a small group of people might be affected, the allergic reactions can range from mild to severe. Symptoms typically include skin irritation and respiratory issues. Individuals handling yellow-tail should exercise caution to minimize the risk of allergic responses.

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Agricultural Pests

Larvae of yellow-tail feed on host plant tissues, including leaves, flowers, and fruits. This extensive chewing can lead to defoliation and compromised plant health. Severe infestations may result in significant crop yield losses. This pest poses a threat to agricultural productivity and could cause economic damage if not managed properly.

More Effects of Yellow-tail

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