Pulvinaria psidii (green shield scale)
Identity
- Preferred Scientific Name
- Pulvinaria psidii Maskell, 1893
- Preferred Common Name
- green shield scale
- Other Scientific Names
- Chloropulvinaria psidii Borchsenius, 1957
- Lecanium vacuolatum Green Dash, 1916
- Pulvinaria cupaniae Cockerell, 1893
- Pulvinaria cussoniae Hall, 1932
- Pulvinaria darwiniensis Froggatt, 1915
- Pulvinaria gymnosporiae Hall, 1932
- Pulvinaria psidii philippina Cockerell, 1905
- International Common Names
- Englishguava mealy scaleguava pulvinariaguava scalemango scale
- Spanishcochinilla pardaguaga harinosa
- Frenchcochenille du goyaviercochenille verte
- Local Common Names
- Netherlandsgroene Djamboe-dopluis
- South Africakoejawel pulvinaria
- EPPO code
- PULVPS (Pulvinaria psidii)
Pictures
Pulvinaria psidii
Adults and nymphs on a leaf
NBAIR
Pulvinaria psidii
Adult scale
Pulvinaria psidii
Adults and nymphs on a colonised branch
NBAIR
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Pulvinaria psidii
United States National Collection of Scale Insects Photographs, USDA ARS, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Distribution
Host Plants and Other Plants Affected
| Host | Host status | References |
|---|---|---|
| Anthurium | Other | |
| Cajanus cajan (pigeon pea) | Other | |
| Camellia | Other | |
| Camellia sinensis (tea) | Other | |
| Citrus | Other | |
| Cocos nucifera (coconut) | Other | |
| Coffea (coffee) | Other | |
| Euonymus (spindle trees) | Other | |
| Ficus | Other | |
| Ilex (Holly) | Other | |
| Jasminum (jasmine) | Other | |
| Litchi chinensis (lichi) | Main | |
| Macadamia | Other | |
| Mangifera indica (mango) | Main | |
| Manilkara zapota (sapodilla) | Other | |
| Nerium oleander (oleander) | Other | |
| Persea | Other | |
| Persea americana (avocado) | Other | Kondo and Muñoz (2016) |
| Pouteria sapota (mammey sapote) | Main | |
| Psidium (guava) | Other | |
| Psidium guajava (guava) | Main | Brhane et al. (2018) |
| Syzygium | Other | |
| Tamarix (tamarisk) | Other | |
| Terminalia | Other |
Symptoms
Colonies of P. psidii extract large quantitites of sap, causing general host debilitation and build-up of sticky honeydew deposits on nearby surfaces. The honeydew may attract attendant ants. Sooty moulds grow on the sugary deposits. Badly fouled leaves may be dropped prematurely and the quality of fruits may be reduced, for example guava (Swirski et al., 1997a). On stems, each adult scale develops a mealy covering of white wax and a conspicuous white wax ovisac as long as, or longer than, the insect itself. The white ovisacs of older females mean they are usually easy to see on the undersides of stems.
List of Symptoms/Signs
| Symptom or sign | Life stages | Sign or diagnosis |
|---|---|---|
| Plants/Fruit/honeydew or sooty mould | ||
| Plants/Inflorescence/external feeding | ||
| Plants/Inflorescence/fall or shedding | ||
| Plants/Inflorescence/honeydew or sooty mould | ||
| Plants/Leaves/abnormal leaf fall | ||
| Plants/Leaves/external feeding | ||
| Plants/Leaves/honeydew or sooty mould | ||
| Plants/Stems/dieback | ||
| Plants/Stems/external feeding | ||
| Plants/Stems/honeydew or sooty mould | ||
| Plants/Whole plant/external feeding |
Prevention and Control
Chemical Control
Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:
•
EU pesticides database (http://ec.europa.eu/food/plant/pesticides/eu-pesticides-database/)
•
PAN pesticide database (www.pesticideinfo.org)
•
Your national pesticide guide
Impact
P. psidii can be a pest on a variety of fruit, nut and beverage crops, especially mango and guava in India and Egypt, also avocado, litchi and sapota, as well as on ornamental plants like Nerium oleander.
Information & Authors
Information
Published In
Copyright
Copyright © CABI. CABI is a registered EU trademark. This article is published under a Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
History
Published online: 16 November 2021
Language
English
Authors
Metrics & Citations
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