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Silver y

Silver y

Autographa gamma

A species of Autographa, Also known as Beet worm

The silver y (Autographa gamma) has an interesting name that comes from the silver, y-shaped patterns on each of its wings. Patterns on those wings also provide for decent camouflage. Its colors can be different depending on the local climate. You may catch them in your garden given their love of taking nectar from flowers.

General Info About Silver y
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Attributes of Silver y
Colors
Brown
Black
Gray
White
Habitat
open area; garden
Adult Food Sources
Nectar from flowers such as buddleja, lavandula, solidago, phlox, primula
Larva Food Source
Nettles, clover, peas, cabbage, lettuce
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
The Silver y is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
Not reported
Pollinator
The Silver y is often found near the corolla, where its fluffy hairs easily pick up pollen, assisting in the pollination of the plant.
Pest-Eating Predatory
Not reported
Phytophagous
The Silver y 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
Siphoning mouthparts
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Species Status of Silver y
It is widespread across Europe, parts of Asia, and North Africa.
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Distribution Area of Silver y
Europe and over almost all the Palearctic including North Africa
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Appearance of Silver y
The silver y is a medium-sized moth with a wingspan of 3 - 4.5 cm. The wings are intricately patterned with various shades of brown and grey providing excellent camouflage. In the centre of each forewing there is a silver-coloured mark shaped like a letter Y or a Greek letter Gamma. The eggs are whitish in colour and hemispherical in shape with deep ribbing. The pupa is green at first, gradually darkening to black.
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How to Identify Silver y?

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Life Cycle of Silver y
Egg The eggs of silver y are laid in clusters and are generally round or oval. Initially, they may be translucent or lightly colored, gradually darkening as development progresses inside the egg.
Larva Upon hatching, the caterpillar is a small larva with a primary goal of feeding to grow rapidly. It molts several times, significantly increasing in size and may change in color and pattern with each instar.
Pupal The larva encases itself in a pupa, often brown or green for camouflage. During this stage, silver y undergoes a dramatic transformation, reorganizing its body structure entirely, although externally it is immobile and seems dormant.
Adult Emerging from the pupa, the adult silver y’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 Silver y
3 - 4.5 cm
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Predators of Silver y Larvae
Frogs, toads, birds, monkeys, jumping spiders, mantises, geckos, hoverflies, dragonflies
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Predators of Adult Silver y
Bats, birds, spiders
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Interesting Facts About Silver y
The silver y can precisely navigate at night using polarized moonlight.
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Scientific Classification of Silver y
Tips for Finding Silver y
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Youth Habitat of Silver y
Agricultural and Cultivated Areas, Grasslands and Prairies, Forests and Woodlands, Urban and Suburban Areas
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Adult Habitat of Silver y
Agricultural and Cultivated Areas, Grasslands and Prairies, Forests and Woodlands, Urban and Suburban Areas, Tropical Rainforests, Savannas
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How Can You Attract Silver y
Due to the feeding habits of silver y, people may use bait such as fermented fruit or sugary solutions to attract adult silver y. Larval stages may be found on host plants specific to silver y's dietary requirements.
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Habitat Preferences of Silver y Through Different Life Stages
The eggs of silver y are typically found on the underside of leaves of a wide range of host plants, including vegetables and ornamentals. Larvae, known as caterpillars, favour feeding on the leaves or stems of their host plants and can be seen in gardens, fields, or along margins where these plants grow. The pupae usually reside in loose soil, under debris, or within plant litter close to the host plants. Adult silver y are highly mobile and attracted to various flowers for nectar, commonly seen in meadows, gardens, parks, and farmland. To observe these stages, one would inspect the appropriate plant parts, sift through soil and leaf litter, or visit flowering areas during the evening when adults are most active.
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When is the Best Time to Observe Silver y
The best time to find silver y is usually at night, as silver y is a moth and therefore more active and easier to spot or trap during the nocturnal hours. For different life stages, the time of day might vary.
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What is the Best Weather to Observe Silver y
Silver y is more likely to be found in mild to warm weather with less wind, as extreme conditions may hinder their activity and visibility.
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How and Where Can You Find Silver y at Different Life Stages
Egg Eggs of silver y are typically laid in clusters on the underside of host plant leaves. To find them, carefully inspect the potential host plants in the habitat known for silver y.
Larva Caterpillars of silver y can be found on or around their food plants. Conduct searches by gently examining the leaves and stems of these plants for feeding damage or the presence of larvae.
Pupal The pupae of silver y may be found in loose soil, under leaf litter, or in other sheltered spots close to the ground. Look for them by sifting through the top layer of soil or leaf litter in areas where larvae have been present.
Adult Adult silver y moths can be attracted at night using a light trap or by applying sweet bait to trees or flat surfaces. Once lured, they can be carefully observed or captured for study.
Are Silver y harmful?
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Harmful Effects of Silver y
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Agricultural Pests

The larvae of silver y harm a variety of crops, chewing on leaves which can lead to mild to severe defoliation. In limited numbers, silver y may cause only cosmetic damage, but severe infestations can result in significant yield losses. This pest’s activity can stress plants, reducing agricultural productivity and potentially affecting food supply and costs.

More Effects of Silver y

Beneficial Effects of Silver y
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Explore how insects help as pollinators, pest predators, and biocontrol agents. From seed dispersal to decomposition, they play vital roles in our ecosystem.
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Pollinator
Pollinator
Prefer Plant Type
Asteraceae, Fruit Trees
Attract Plant Feature
Color, Smell
Pollination Behavior Reason
Eat Pollen Or Nectar
Silver y flutters from flower to flower, mostly during night time, attracted by the vivid colors and enticing smells of blossoms, particularly fond of Asteraceae and fruit trees. While feeding on pollen, silver y inadvertently transfers it, aiding in plant fertilization and biodiversity.
Common Questions People Also Ask
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