Lecanium corni
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Lecanium corni
| European Fruit Lecanium Scale | |
|---|---|
| Type: | Insect |
| Binomial: | Parthenolecaniun corni |
| Metamorphosis: | Simple |
European Fruit Lecanium Scale (Parthenolecanium corni, but often referred to as Lecanium corni), is a common pest affecting several genera of woody plants, including both food crops and ornamentals. Other common names include: brown apricot scale, brown elm scale, brown fruit scale, brown scale, European fruit scale, New York plum scale, peach scale, and yew scale.[1]
Description
[edit | edit source]The scales are small, and dark brown, generally in large colonies.
Symptoms and Signs
[edit | edit source]Heavy infestations lead to weakening of the plant and dieback
Ecology
[edit | edit source]Host plants
[edit | edit source]- Acer (Maple)
- Cornus (Dogwood)
- Crataegus (Hawthorn)
- Fagus (Beech)
- Fraxinus (Ash)
- Magnolia
- Malus (Apple)
- Morus (Mulberry)
- Prunus (Stone Fruits)
- Quercus (Oak)
- Rosa (Rose)
- Salix (Willow)
- Sassafras
- Thuja (Arborvitae)
- Tilia (Linden, Basswood)
- Ulmus (Elm)
- Vaccinium (Blueberry)
- Vitis (Grape)
Control
[edit | edit source]- Organic pesticides: Horticultural Oil (in winter to smother scales, spring and summer for crawlers). Neem Oil
- Predators and parasites: Lady Beetles, Lacewings