Horticulture/Lecanium corni
From Wikibooks, the open-content textbooks collection
| 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].
[edit] Description
The scales are small, and dark brown, generally in large colonies.
[edit] Symptoms and Signs
Heavy infestations lead to weakening of the plant and dieback
[edit] Ecology
[edit] Host plants
- 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)
[edit] Control
- Organic pesticides: Horticultural Oil (in winter to smother scales, spring and summer for crawlers). Neem Oil
- Predators and parasites: Lady Beetles, Lacewings
