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Goldenrod gall fly

Goldenrod gall fly

Eurosta solidaginis

A species of Eurosta, Also known as Goldenrod spherical gall fly

Adorned with a mesmerizing mosaic of golden and brown on its wings, goldenrod gall fly is a master of mimicry, with patterns resembling the eyes of predators to ward off threats. As it metamorphoses from larva to adult, its dietary preferences shift dramatically, from the internal tissues of plant stems to sipping on the sugary secretions of aphids, showcasing the creature's remarkable adaptability in its ecological niche.

General Info About Goldenrod gall fly
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Attributes of Goldenrod gall fly
Colors
Brown
Habitat
grassland; forest
Larva Food Source
Goldenrod (solidago spp.) stem tissue
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
The Goldenrod gall fly is non-toxic and generally doesn't pose a risk to human health. No need for excessive worry.
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
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Species Status of Goldenrod gall fly
It is native to North America. It is widely distributed across the United States, ranging from Washington all the way to the eastern seaboard.
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Distribution Area of Goldenrod gall fly
United States
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Life Cycle of Goldenrod gall fly
Egg The egg stage begins when the female goldenrod gall fly deposits its eggs on host plants. The eggs are usually small, oval, and in some species might be colored or camouflaged for protection.
Larva Upon hatching, the larva or maggot of goldenrod gall fly is markedly different from the adult. It lacks wings and has a worm-like shape. This stage is devoted to feeding and growth, undergoing a series of molts.
Pupal The pupa of goldenrod gall fly forms within a protective cocoon, often in the soil or within plant tissues. During this stage, the larva undergoes a transformation, developing the structures of the adult insect.
Adult Emerging from the pupa, the adult goldenrod gall fly is markedly distinct in form and function. It has wings, a hardened exoskeleton, and is sexually mature, focusing on reproduction and dispersal.
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Adult Size of Goldenrod gall fly
7 - 9 mm
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Predators of Goldenrod gall fly Larvae
Birds, rodents, parasitic wasps, parasitic flies
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Predators of Adult Goldenrod gall fly
Birds, rodents, spiders, predacious insects
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Scientific Classification of Goldenrod gall fly
Class
Bugs
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Order
Flies
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Genus
Eurosta
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Tips for Finding Goldenrod gall fly
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Youth Habitat of Goldenrod gall fly
Forests and Woodlands, Grasslands and Prairies
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Adult Habitat of Goldenrod gall fly
Forests and Woodlands, Grasslands and Prairies
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How Can You Attract Goldenrod gall fly
Adult goldenrod gall fly: People may use food traps with fermenting sweet baits, as goldenrod gall fly adults often feed on sugary substances. Larval goldenrod gall fly: No trap food is typically used since larvae live inside their host plant.
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Habitat Preferences of Goldenrod gall fly Through Different Life Stages
For the early larval stage of goldenrod gall fly, search within the galls on goldenrod plants; these are often round swellings on stems. As they mature, larvae remain inside the galls, which provide a food source and protection. Looking for pupae of goldenrod gall fly, the galls are the place to continue, especially near the surface as larvae prepare to pupate. Adult goldenrod gall fly, being free-flying, are typically found around goldenrods as well, for mating and egg-laying, but they may also be encountered in adjacent open fields and meadows where goldenrods grow.
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When is the Best Time to Observe Goldenrod gall fly
Adult goldenrod gall fly: Active during the day, especially in warm and sunny weather. Larval and Pupal goldenrod gall fly: Time is less critical as these stages are less mobile and are found within the host plant.
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What is the Best Weather to Observe Goldenrod gall fly
Adult goldenrod gall fly: Prefer warm and dry conditions. Larval and Pupal goldenrod gall fly: Weather is less relevant as they are protected inside the host.
Are Goldenrod gall fly harmful?
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