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Turnip gall weevil

Turnip gall weevil

Ceutorhynchus assimilis

A species of Ceutorhynchus

General Info About Turnip gall weevil
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Attributes of Turnip gall weevil
Colors
Brown
Black
Habitat
Mountain; canola seed pod
Adult Food Sources
Brassica leaves, flower buds of host plants, petals, nectar, pollen
Larva Food Source
Brassica plant roots, brassica seedlings, brassica stems, underground stems of host plants, root hairs
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
Mouthparts Type
Chewing mouthparts
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Species Status of Turnip gall weevil
Stable population, very rare
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Distribution Area of Turnip gall weevil
Asia, Europe, North America
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Life Cycle of Turnip gall weevil
Egg In the egg stage, turnip gall weevil is encapsulated within a protective shell. The eggs are often laid on or near a food source and are usually minute and ovular in shape. During this stage, the embryo grows and develops, but there is no feeding activity or locomotion.
Larva Upon hatching, the larva of turnip gall weevil is worm-like, with a soft, elongated body, and it may have a different color than the adult. Lacking true wings and incapable of reproduction, it is primarily focused on feeding and rapid growth, molting several times as it enlarges.
Pupal Transforming into the pupal stage, turnip gall weevil becomes inert within a cocoon or pupal case. During this time of reorganization, the larva's tissues are broken down and reformed into adult structures. The pupa is typically immobile and non-feeding, with significant changes in form visible shortly before emergence.
Adult Emerging from the pupa, the adult turnip gall weevil features hardened exoskeleton and wings. Displaying distinctive coloration, often differing from larval stages, it is now capable of flight and reproduction. The body size has reached maturity and the insect's full suite of sensory and defensive capabilities is functional.
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Predators of Turnip gall weevil Larvae
Birds, generalist predators like carabid beetles and spiders, entomopathogenic nematodes, insect parasitoids such as wasps from the families braconidae and ichneumonidae
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Predators of Adult Turnip gall weevil
Birds, small mammals, predaceous insects like lady beetles and lacewings, spiders
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Scientific Classification of Turnip gall weevil
Tips for Finding Turnip gall weevil
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Youth Habitat of Turnip gall weevil
Agricultural and Cultivated Areas
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Adult Habitat of Turnip gall weevil
Agricultural and Cultivated Areas, Grasslands and Prairies
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How Can You Attract Turnip gall weevil
Pheromone traps or bait containing host plant materials are effective in capturing adult turnip gall weevil, taking advantage of their search for mates or food.
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Habitat Preferences of Turnip gall weevil Through Different Life Stages
To witness the full life cycle of turnip gall weevil, one should begin by searching the roots or leaf litter near host plants in agricultural fields or gardens for eggs, where they are typically laid. The larvae are generally found within the stems or roots of cruciferous plants, as they are endophytic. Pupation often occurs within the plant tissue or in the soil adjacent to their host plants. Finally, the adult turnip gall weevil can regularly be found on or around host plants, as they are phytophagous, feeding on foliage and flowers during the growing season.
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When is the Best Time to Observe Turnip gall weevil
The best time to find turnip gall weevil is during their active periods in the day, typically in the morning or late afternoon when temperatures are moderate. Adults are generally easier to find during the spring and summer mating season.
Are Turnip gall weevil harmful?
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Harmful Effects of Turnip gall weevil
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Agricultural Pests

Larvae of turnip gall weevil bore into the stems and roots of cruciferous plants, causing wilting and potentially plant death. Heavy infestations can lead to severe crop losses, reduced yield, and quality. The pest's presence can also impact soil health and necessitate increased pesticide use, affecting humans indirectly.

More Effects of Turnip gall weevil

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