I. purchasi belongs to the scale insect family Monophlebidae, the giant scales. The genus Icerya has been poorly studied and it is possible that. Icerya purchasi (Hemiptera: Margarodidae) . How to manage pests citrus cottony cushion scale, scientific name: Icerya purchasi. Univ. Calif. IPM Pest. Icerya purchasi Maskell trials with Cryptochetum iceryae and Rodolia iceryae for improved biological control of Icerya purchasi in Israel.

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Several life stages of the cottony cushion scales, Icerya purchasi Maskell, on a twig. One of which is the famous Vedalia beetle or Cardinal ladybird, Rodolia cardinalis. Interesting Insects and other Invertebrates.

Icerya purchasi Maskell This scale infests twigs and branches. The number of eggs produced depends on the body size, condition of the host and climatic conditions. A detailed history of the introduction of the vedalia beetle into California, USA, is given by Caltagirone and Doutt Journal of Animal Ecology, The fluted purchazi is the egg sac, which is more than twice the length of the body.

The other, Coccidoctonus dubius Encyrtidae is a parasite of parasitic wasps. Description Top of page Immature I. Two of the wasps are hypoparasites, that is they parasitise other parasites.


Unlike many other scale insects, they retain legs and a limited mobility in all life stages. The males are rarely encountered and do not live long.

Cryptochetidae parasitoid 10 adventive Euryischia sp.

Prchasi stages are spread in the horticultural trade of plants or plant parts. Use of insecticides as a control is recommended only if no biological control species is present. I, the copyright holder of this work, hereby publish it under the following licenses:.

Rao reviewed the known species of Icerya living in the Oriental Region, and a revision of the known species in Australia is currently in progress. Synonyms Pericerya purchasi Silvestri, The adult female and nymphs of Cottony cushion scale may insert their stylets into the phloem, the plant vessels for transmitting sap from the leaves to other parts of the plant.

Depending on the temperature, eggs hatch in a few purchawi to two months. The nymphs have an orange brown body that is coated with white and yellow wax. The egg sac will grow to be two to three times as long as the body.

Icerya purchasi – Wikipedia

Shortly after settling they begin to secrete white wax, first as isolated plates and later as a total cover. If self-fertilization occurs only hermaphrodites are produced; however, when a hermaphrodite mates with a male, more males and hermaphrodites are produced Ebeling Cottony cushion scale infestation on acacia trees.


This tool is part of the Citrus Resource. In Anhui, China, I.

The males possess a single pair of dusky wings. Horticultural Journal, 11 2: Males ;urchasi rare and exist in the species to allow the scale to reproduce sexually producing both females and males. Pteromalidae parasitoid 10 adventive Tetracnemoidea brevicornis Girault, Wasp Hymenoptera: By using this site, you agree to the Terms of Use and Privacy Policy.

File:Icerya purchasi 1.JPG

Stages of the cottony cushion scale Icerya purchasi and its natural enemy the vedalia beetle Rodolia cardinalis. Florida Agricultural Experiment Station Bulletin In New Zealand it is occasionally found in gardens, parks and native habitats in both North and South islands. Photograph iceyra Paul M. New control methods used first in California and later the purchssi of United States led to the implementation of biological control and legislative quarantine Ebeling Monophlebidae on a stem of Veronica stricta Plantaginaceae.

The minor families Homoptera: