Saissetia coffeae

Hemispherical scale

General

The hemispherical or helmet scale, Saissetia coffeae, occurs widely in tropical regions and in greenhouses throughout the world. It is a severe pest in coffee and citrus. Many ornamental crops can also be affected, including various different species of fern, orchid, ficus, oleander and carnation.

Life cycle and appearance of Hemispherical scale

An adult female of S. coffeae has a hemispherical form with a smooth surface. The colour is usually dark to sometimes lighter brown or almost yellow, with many evenly distributed light yellow flecks. The high, rounded form and smooth surface distinguish the species from most other soft scales. The size depends on the host plant and can vary from 2 to 4.5 mm.

The young nymphs are white to yellowish, more oval in form and with a raised H-pattern on the dorsal surface. All instars live on the underside of leaves, often close to the midrib. Only when an infestation is particularly severe do individual scales appear on stems, branches and twigs.

Damage symptoms

The scales present are usually quite easy to see as shiny brown domes on leaf undersides close to the midribs. They produce large amounts of honeydew causing build-up of sticky deposits on nearby surfaces. The honeydew may attract attendant ants and sooty moulds grow on the sugary deposits. Badly fouled leaves may drop prematurely.

More information about Hemispherical scale

Find out more about Hemispherical scale

Get in touch with the expert

Koppert Biological Systems

Thanks for your request!

Something went wrong, please try again

Want to know more about our company and products? Get in touch with one of our experts.
We produce our products and solutions for professional growers in horticulture.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.

Subscribe to our newsletter

Get the latest news and information about your crops directly in your mailbox

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service.
Scroll to top