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Daylily gall midge

Contarinia quinquenotata

A species of Contarinia

Adults are tiny greyish-brown midges about 2 mm long. Females deposit their eggs with their long, penetrating ovipositors on developing Hemerocallis flower buds during May through early July although this may vary by location. This fly is difficult to see when it is flying.

General Info About Daylily gall midge
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Attributes of Daylily gall midge
Adult Food Sources
Plant nectar, honeydew, floral parts
Larva Food Source
Developing leaf tissues of chestnut trees, leaf veins, plant secretions within gall, gall tissues, photosynthates from host plant
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
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Distribution Area of Daylily gall midge
Contarinia quinquenotata possibly originated in Asia where wild Hemerocallis are native although it was first recorded in Europe in the 1800s. The midge has been slowly spreading across the world in infested Hemerocallis plants and soil. This fly was first noted in the United Kingdom in 1989 and has now spread to many parts of the United Kingdom. It was first reported in Canada in 2001 and has spread into the USA. The spread is assumed to occur from larvae within buds of imported plants or the soil in plant containers.
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Life Cycle of Daylily gall midge
Egg The eggs of daylily gall midge are typically laid in clusters. They are small, oval, and initially translucent, becoming more opaque as development progresses.
Larva Larvae of daylily gall midge are legless, maggot-like, and vary from transparent to white or cream-colored. They feed voraciously, growing significantly in size.
Pupal Daylily gall midge forms a pupa that is typically brownish and hard, representing a resting stage. Inside, the larva undergoes a remarkable transformation, rearranging into the adult form.
Adult Emerging from the pupa, the adult daylily gall midge is marked by wings and functional reproductive organs. The body is fully formed, hardened, and daylily gall midge is mobile, focusing on reproduction.
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Predators of Daylily gall midge Larvae
Birds, spiders, insects: predatory beetles, insects: parasitoid wasps
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Scientific Classification of Daylily gall midge
Class
Bugs
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Order
Flies
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Tips for Finding Daylily gall midge
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Youth Habitat of Daylily gall midge
Agricultural and Cultivated Areas
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Adult Habitat of Daylily gall midge
Agricultural and Cultivated Areas, Forests and Woodlands
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How Can You Attract Daylily gall midge
Since daylily gall midge is a type of gall midge, trap food could include essential oils or pheromones synthesized to mimic those produced by the plant hosts of the larvae.
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What is the Best Weather to Observe Daylily gall midge
Dry and warmer weather conditions are typically more suitable for finding adult daylily gall midge, as they do not fare well in heavy rain. Larvae may be found during various weather conditions as they are often protected within plant tissues.
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How and Where Can You Find Daylily gall midge at Different Life Stages
Larva Daylily gall midge larvae induce gall formations on plants. To find larvae, inspect the host plants for abnormal growths or galls, which can be opened carefully to locate the larvae inside.
Pupal Daylily gall midge pupae may be within the soil or in plant debris near the host plants. Finding them involves gently sifting through the soil or decaying plant matter beneath the galls.
Adult Daylily gall midge adults are small and may be attracted to light. To find adults, use a light trap after dusk or examine the nearby vegetation with a flashlight during their active hours at dawn or dusk.
Are Daylily gall midge harmful?
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Harmful Effects of Daylily gall midge
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Agricultural Pests

Daylily gall midge larvae induce gall formation on wheat flowers, affecting plant reproduction. With few pests, the impact is minor, but severe infestations can lead to significant yield losses, impacting the agricultural economy and food supply.

More Effects of Daylily gall midge

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