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Dun-bar

Dun-bar

Cosmia trapezina

A species of Cosmia

This is a very variable species, both in size (wingspan 3 - 4 cm) and colour. The ground colour of the forewings varies from pale buff to dark or reddish brown with three narrow fascia. The area between the inner two fascia is sometimes much darker than the surrounding ground colour and is marked with stigmata, often quite indistinct. The hindwings vary from pale cream to dingy brown. The larva is green with yellow lines and black and white spots.

General Info About Dun-bar
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Attributes of Dun-bar
Colors
Brown
White
Habitat
grove-rich habitat (from forest to garden)
Adult Food Sources
Flower nectar, sap, rotting fruit, honeydew, plant fluids
Larva Food Source
Oak leaves, elm leaves, willow leaves, birch leaves, hazel leaves
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
The Dun-bar is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
Not reported
Pollinator
The Dun-bar 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 Dun-bar 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 Dun-bar
It occurs throughout almost the whole of Europe.
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Distribution Area of Dun-bar
Britain
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Life Cycle of Dun-bar
Egg The egg stage heralds the start of the dun-bar's life cycle. The eggs are laid in clusters and exhibit variable coloration depending on the species, often matching the surroundings for camouflage.
Larva In the larval stage, the dun-bar assumes the form of a caterpillar, exhibiting significant growth through molting. The caterpillar's primary function is to consume foliage voraciously, storing energy for subsequent stages.
Pupal During the pupal stage, the dun-bar is encased in a chrysalis. It experiences dramatic transformation where tissues are broken down and reorganized. This stage is marked by a lack of movement, as the creature prepares for adulthood.
Adult Emerging from the pupa, the adult dun-bar’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 Dun-bar
2.5 - 3.5 cm
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Predators of Dun-bar Larvae
Frogs, toads, birds, rodents, arachnids
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Predators of Adult Dun-bar
Bats, birds, small mammals
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Interesting Facts About Dun-bar
The larvae of dun-bar can produce sounds audible to the human ear when disturbed, an unusual trait among its kin.
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Scientific Classification of Dun-bar
Tips for Finding Dun-bar
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Youth Habitat of Dun-bar
Forests and Woodlands, Urban and Suburban Areas
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Adult Habitat of Dun-bar
Forests and Woodlands, Urban and Suburban Areas, Agricultural and Cultivated Areas
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How Can You Attract Dun-bar
Light traps or sugar bait can be effective in attracting adult dun-bar, as they are primarily nocturnal and drawn to sources of light or sweet substances.
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Habitat Preferences of Dun-bar Through Different Life Stages
Adult dun-bars are often found near wooded areas and gardens, as they are attracted to light and feed on nectar from flowers. The caterpillars reside on the underside of the leaves of a variety of deciduous trees, particularly oaks and elms. Searching for eggs typically involves examining leaves' surfaces, where they're laid in small clusters. To find pupae, one would sift through leaf litter or soil near the base of trees, as these insects pupate in the ground or under loose bark.
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When is the Best Time to Observe Dun-bar
The ideal time to find adult dun-bar would be during nighttime as they are nocturnal creatures. The eggs, larvae, and pupae stages might be observed throughout the day, depending on the season.
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What is the Best Weather to Observe Dun-bar
Warm and dry nights are typically the best conditions to find adult dun-bar, while humid and warmer daytime weather conditions can be favorable for observing their other life stages.
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How and Where Can You Find Dun-bar at Different Life Stages
Egg Dun-bar eggs are often laid on the host plants. Look for them on the underside of leaves, typically laid in a flattened, irregular pattern.
Larva Dun-bar larvae can be found on or near the host plants they feed on. Inspecting the leaves and stems by gently turning them over can reveal the caterpillars.
Pupal During the pupal stage, dun-bar can be located in sheltered places such as under loose bark, in leaf litter, or in soil. Gently search these areas without disturbing the habitat.
Adult Dun-bar adults can be attracted to light traps at night. Set up a white sheet with a light source behind it or use a specialized moth trap after dusk.
Are Dun-bar harmful?
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Beneficial Effects of Dun-bar
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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
Attract Plant Feature
Color, Smell
Pollination Behavior Reason
Eat Pollen Or Nectar
Dun-bar visits flowers primarily at night, guided by their luminous colors and alluring scents. While seeking nectar, dun-bar inadvertently collects pollen on its body, facilitating the cross-pollination of various plants as it travels.
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