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Seedcorn maggot

Seedcorn maggot

Delia platura

A species of Delia, Also known as Onion fly, Onion maggot

Delia platura, the seedcorn maggot or the bean seed fly, is a fly species in the family Anthomyiidae. It is an agricultural pest for peas and beans. It can be controlled by mouldboard ploughing.

General Info About Seedcorn maggot
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Attributes of Seedcorn maggot
Colors
Black
Yellow
Red
Gray
Habitat
Bean; pea; oilseed rape; brassica palnt
Adult Food Sources
Nectar, plant exudates, honeydew, decaying organic matter, fungi
Larva Food Source
Decomposing plant matter, seeds, seedlings, root tissues, fungi
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
The Seedcorn maggot is often found near the corolla, where its fluffy hairs easily pick up pollen, assisting in the pollination of the plant.
Mouthparts Type
Sponging mouthparts
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Species Status of Seedcorn maggot
Widespread
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Distribution Area of Seedcorn maggot
Canada
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Life Cycle of Seedcorn maggot
Egg The egg is the initial stage where seedcorn maggot begins its life cycle as an oval or round capsule, usually laid in groups. During this stage, the egg’s coloration can range from white to near translucent and is often deposited on or near suitable food sources for the larva.
Larva Seedcorn maggot at the larval stage, commonly called a maggot, is worm-like, lacks true legs, and is predominantly feeding. This stage is characterized by successive molts as the larva grows, often changing in size and sometimes color with each molt.
Pupal In the pupal stage, seedcorn maggot is encased in a puparium formed from its last larval skin. At this phase, seedcorn maggot is non-feeding and undergoes a significant transformation. The color can be variable, often starting as light and darkening over time.
Adult Emerging from the pupa, the adult seedcorn maggot’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 and possibly feeding on nectar or other sources.
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Predators of Seedcorn maggot Larvae
Amphibians, reptiles, insectivorous birds, insects
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Predators of Adult Seedcorn maggot
Birds, reptiles, amphibians, spiders, insects
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Scientific Classification of Seedcorn maggot
Tips for Finding Seedcorn maggot
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Youth Habitat of Seedcorn maggot
Agricultural and Cultivated Areas, Rotting and Decaying Matter
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Adult Habitat of Seedcorn maggot
Agricultural and Cultivated Areas, Urban and Suburban Areas
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How Can You Attract Seedcorn maggot
For attracting adult seedcorn maggot, rotting vegetables or organic matter can be used as they lay eggs on these substrates.
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Habitat Preferences of Seedcorn maggot Through Different Life Stages
The eggs of seedcorn maggot are usually laid on rotting vegetable matter, compost piles, or in soil rich with organic material. Larvae can be found beneath the soil surface, feasting on roots and tubers. The pupae often settle within the soil itself or beneath debris close to the food source. To search for these stages, sift through soil and decomposing material where crops are grown, as they prefer areas with plenty of organic matter. Adult seedcorn maggot frequently occupy fields and gardens where they feed on nectar and can be spotted hovering near host plants during warmer months.
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When is the Best Time to Observe Seedcorn maggot
The most suitable time for finding adult seedcorn maggot is during warm days, especially in late spring to early summer when they are most active in laying eggs.
Are Seedcorn maggot harmful?
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Harmful Effects of Seedcorn maggot
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Agricultural Pests

Larvae of seedcorn maggot burrow into the soil to feed on the roots and stems of young plants, stunting growth. A small population may only slightly delay development, while a larger infestation can lead to significant crop losses and weaken plants, making them more susceptible to diseases, ultimately impacting agricultural productivity and food supply.

More Effects of Seedcorn maggot

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