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The adult weevil is matte black with fused wing covers, and is unable to fly. It feeds at night on the outer edges of leaves, causing the leaves to have a notched margin. Broadleaved evergreen plants such as Camellia , Rhododendron , Euonymus and Bergenia are particularly prone to damage, although a wide range of different garden plants are ...
Fipronil is a broad-spectrum insecticide that belongs to the phenylpyrazole insecticide class. [3] Fipronil disrupts the insect central nervous system by blocking the ligand-gated ion channel of the GABA A receptor (IRAC group 2B) and glutamate-gated chloride (GluCl) channels. This causes hyperexcitation of contaminated insects' nerves and muscles.
repels insects and rabbits [2] Myrrh: repels insects [5] Narcissus: repel moles [3] Nasturtiums: repel squash bugs, [2] aphids (though there is conflicting information with some sources stating it attracts aphids), [10] many beetles, and the cabbage looper [3] Onion: repels rabbits, the cabbage looper, and the Small White [3] Oregano: repellent ...
Insecticides are pesticides used to kill insects. [1] They include ovicides and larvicides used against insect eggs and larvae , respectively. The major use of insecticides is in agriculture , but they are also used in home and garden settings, industrial buildings, for vector control , and control of insect parasites of animals and humans.
Ground beetles, nematodes and fungi can kill both immature and adult weevils. The parasitic wasp attacks pine weevil larvae only. [5] Fungus Tarichium hylobii (from the order Entomophthorales order) is a pathogen of Hylobius abietis, especially in the Czech Republic. [7] Entomopathogenic nematodes are microscopic worms that kill only insects.
Species of spruce trees face assault from insects such as the white pine weevil (Pissodes strobi), Cooley spruce gall adelgid, and the pine needle scale (Chionaspis pinifoliae). The final category of Christmas trees, pines, are commonly susceptible to insect infestation and damage from the pine root collar weevil ( Hylobius radicis ), Zimmerman ...