Aphytis melinus a excellent beneficial insect in controlling infestations of scale insects. Aphytis melinus (golden Chalcis) is a small parasitoid wasp yellow. USE: Aphytis melinus is a parasite that is effective on several different kinds of scale, including: red scale, yellow scale, and oleander scale. They are commonly . Aphytis melinus. Appearance: Aphytis melinus is a yellow parasitoid of about 1 mm in size. The difference between male and female wasps can not be seen with .

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Organophosphate and carbamate insecticides are also toxic and must be avoided; if they have to be used, you should never spray your entire orchard and allow at least 4 weeks to elapse before releasing parasites.

University of California Agriculture and Natural Resources. See our Home pageor in the U. The female Aphytis deposits a single egg beneath the scale cover aphgtis upon hatching, the Aphytis larva feeds on the scale.

Despite the fact that all insectaries rear A. Minimum 50, wasps per hectare 5 cups per hectare.

Aphytis melinus red scale parasite

Crops We work in a range of crops and have developed biologically based IPM programs to control the major pests. Citrus trees less than 5 years old are usually poor candidates for biological control because they offer little natural shelter for beneficial organisms. Aphytis melinus Scientific classification Kingdom: Description and biology Aphytis are tiny aphutis wasps capable of short flights within a tree, or from one tree to the next.


With some experience, the level of parasitism can be assessed with the aid of a microscope. Because its feeding is external to the scale body, Aphytis is considered an ectoparasite. When it is ready to emerge, the young adult chews a small exit hole in the empty shell. Agriculture and Natural Aphyris, University of California. It then transforms into a pupa inside the body. Aphytis melinus is an important parasite of several species of armored scales including California red scale, latania scale, San Jose scale, and oleander scale.

However, highly residual insecticides such as synthetic pyrethroids should never be used. The male’s window is during the second instar and pre-pupae development.

Aphytis Melinus Red Scale Parasite

Aphytis melinus is an internal parasite of the California red scale, Aonidiella aurantiiwhich is a pest of citrus in California and elsewhere. Suitable crops Citrus is the main crop attacked by red scale, but other hosts include passionfruit, olives, walnuts, roses and ivy. Aphytis melinus DeBach, Scale mergence usually occurs in spring. Aphytis wasps are very effective parasites of scale insects but they are delicate organisms and are easily harmed by pesticides.

Aphytis melinus is well adapted to hot summers and low humidity. For noncommercial purposes only, any Web site may link directly to this page. The adult parasites live approximately 26 days and will also dine on honeydew.


Place cup into tree or tap wasps out of cup onto fruit or foliage aphytiss release point. Oil sprays Bacillus thuringiensis and Sabadilla are compatible. Adult wasps also use scales as a food source, killing them by direct feeding host feeding. We also stock a range of traps and monitoring tools. From Wikipedia, the free encyclopedia. If a clean-up spray is warranted for scale control, an application of narrow-range petroleum spray oil is recommended.

Aphytis melinus ~ Entocare Biologische Gewasbescherming

If temperatures are expected to be high on the day of release place Aphytis on the southeast side of the tree early in the morning or late in the evening. Release parasites every fifth to sixth tree every fifth to sixth row starting at a different row each release. This can be achieved by travelling every third row and releasing some wasps every 25 metres.