Green coffee scale, which has recently established in Western Australia, is considered to be an important pest of citrus and other fruit production. Green coffee. Coccus viridis was also reported as a pest in India at the end of the nineteenth century and has continued to cause problems for coffee growers, particularly in. Authors Ronald F. L. Mau, Extension Entomologist Jayma L. Martin Kessing, Educational Specialist Department of Entomology Honolulu.

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State Foccus Board of Florida Bulletin 1: A study found that the entomopathogenic fungus, Cephalosporium lecaniiwas highly effective in controlling coffee green scale.

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EPPO, ; Arriola et al. Eggs hatch into crawlers that wander around the plant or disperse to other hosts. A survey of the forest insects of Puerto Rico.

Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. Florida Citrus Pest Management Guide. The Division of Plant Industry has recorded green scale on hosts in Florida since Once a suitable leaf or green shoot is found the nymphs settle and begin to feed.

Some adults were observed by Fredrick to complete egg deposition in eight days, and others deposited eggs over a day period.

If coccud would like to, you can learn more about the cookies we use. This pest is especially damaging to young trees in the first two years after transplanting Mau and Kessing Datasheet Coccus viridis soft green scale.


The green scale has a wide host range consisting of vegetable, fruit viriris ornamental crops Mau and Kessing Schildlaus, Gruene Kaffee- Netherlands: Green scale, Coccus viridis Greenon grapefruit leaf. Please consider upgrading your browser to the latest version or installing a new browser.

The outline shape may be described as elongate-oval and moderately convex.

More information about modern web browsers can be found at http: Malumphy and Treseder, Eggs hatch within the body viridsi the female. When large populations are present yellowing, defoliation, reduction in fruit set and loss in plant vigor are caused. This insect is also referred to as the coffee green scale. Sap sucking and excretion of honey-dew producing sooty moulds and attracting ants.

Eggs are whitish green and elongate-oval and are laid singly and hatch beneath the female where they are protected. The nymphs shed their skin three times and each instar is larger and viriis convex than the previous one.

This tropical soft scale may occur on cultivated hosts in commercial nurseries, resulting in a quarantine of the infested plants until the scale is under control. Thought to be of Brazilian origin the green scale is presently cosmopolitan in distribution throughout the Tropics except for Australia. The undersurface of the leaf is preferred, and adult scales may be found in a line along both sides of the midrib and lateral leaf veins. Green scale on coffee-Ethiopia.

In Florida, these fungi include: It has a flattish elongated oval dome shape and is about three millimetres in width. Like most websites we use cookies. Eggs hatch from a few minutes to several hours after being laid Fredrick University of Puerto Rico The direct effect of this was an increase in scale reproductive success and the indirect effect was a decrease in scale mortality resulting from the removal of predators and a decrease in parasitism rates.


There are three nymphal stages before becoming an adult, each stage being larger and more convex than the previous stage Mau and Kessing Accumulations of sooty mold cause the infested plant to be unsightly. Direct insecticidal sprays to lower leaf surfaces and new growth to give coccux coverage.

Photograph by University of Florida.

Scale Insects: Fact sheet

Occurs in the tropical regions of the world Merrill The use of fenthion resulted in the highest percentage mortality of the scales at the lowest dosages of insecticide. The band should be at least 15 cm wide and care taken to avoid leaving any bridges. Viridiss enemies include predators such as ladybirds Chilocoruscaterpillars Noctuidae: The newly hatched crawlers wander off to find somewhere suitable to settle on a leaf or near the tip of a green shoot.

This scale is believed to be of Brazilian [5] or African origin [6] but is now widely distributed throughout the tropics [7].

Cookies on Plantwise Knowledge Bank Like most websites we use cookies. The front end is rounded while the rear end has a distinctive groove. Green scale appears in a rather definite pattern on citrus leaves.

Coccus viridis Green – The Green Scale.