The life stages of Euphyllura olivina include an egg, five nymphal instars, and adults (both sexes). Olive psyllids are very small insects ranging. AGRICULTURAL COMMISSIONER/WEIGHTS AND MEASURES DEPARTMENT. Olive Psyllid (Euphyllura olivina). Distribution: Olive growing regions from. Adult olive psyllid, Euphyllura olivina. Olive. Olive Psyllid. Scientific Name: Euphyllura olivina. (Reviewed 3/14, updated 3/14). In this Guideline.

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Additionally, olive psyllids tend to select healthy hosts over unhealthy hosts M. Additionally the accumulation of waxy secretions from olive psyllids may reduce yield by causing premature flower drop Johnson et al. It is unclear at this time whether the distribution of Euphyllura olivina will significantly expand beyond San Diego and Orange Counties.

CISR: Olive Psyllid

Females lay eggs on the new shoots and buds, with a single female able to lay eggs or more. Psyllids generally are monophagous feeding on one plant species or oligophagous feeding on plants within a single family Kabashima et al.

They are found in the Mediterranean Basin and the Middle East. Observation of arthropod populations during outbreak of olive psyllid Euphyllura olivina in Tunisian olive groves.

Adults overwinter in sheltered areas of the olive trunk. Currently, the olive psyllid is not found in Florida, but it does have the potential to spread to new locations via olive tree importation. Euphyllura olivine, the olive psyllid, was discovered in July in the California counties of San Diego and Orange and positively identified in September Adult olive psyllid, Euphyllura olivina Costa.


The life cycle is about 3 months depending on temperature. University of Michigan Museum of Zoology. Photos of insects and people from the gathering in ArizonaJuly Photos of insects and people from the gathering in Alabama Photos of insects and people from the gathering in Iowa Photos from the Workshop in Grinnell, Iowa Photos from the gathering in Washington.

If this is possible, olive production areas in the Central Valley may be euphylura by this pest. The accumulation of honeydew on foliage provides a substrate for development of sooty mold Figure 3which can potentially block sunlight and inhibit photosynthesis, or lead to premature aging of leaves that causes the leaves to drop Laemmlen During olive flowering and oluvina, psyllid waxy secretion cause flower and small fruit drop and yield reductions.

The waxy secretion completely covers the nymphs, most likely to hide them from predators or to prevent desiccation M.

EPPO Global Database

In Croatia, it is a sporadic olive pest. Nymphs are flat, green to tan, and secrete a white waxy coating that covers the entire colony.

An olive psyllid, Euphyllura olivina Costain its first instar on an olive leaf. Official Journal of the International Olive Council The second generation begins feeding in May but becomes inactive going through aestivation once temperatures reach Bugguide is hosted by: As its common name suggests, the olive psyllid Figure 1 is found within the family Psyllidae, which contains over euphyplura Myers et al.

The World Psylloidea Database.

How to Manage Pests

The highest populations observed have been in the cities of Carlsbad and San Diego. These types of losses have not been reported in California. Some general predators e. Text and photos olivjna by: The second generation develops on buds and flowers in May and June. One infested site in Carmel Valley Monterey County has been recorded.


Nymphs and adults feed by rupturing cells and ingesting sap. Contributed by Chris Mallory on 6 July, – 5: Forewings are marked with a few small dark spots. Olive psyllid – Euphyllura olivina Costa, Hemiptera: There are typically three generations of olive psyllid per year. In areas with hot temperatures, psyllid numbers may be reduced by pruning out center limbs to enhance air circulation. The third generation of nymphs appears in September and October Zalom et al.

Most of this was on the higher leaves, just out of reach. In the United States, a lady beetle called the mealybug destroyer Cryptolaemus montrouzierigreen lacewing Chrysoperla rufilabris larvae, and some other species of lady beetles have occasionally been found around the olive psyllid Johnson et al. Upcoming Events Discussioninsects and people from the BugGuide Gathering in VirginiaJuly Photos of insects and people from the gathering in WisconsinJuly Photos of insects and people from the gathering in VirginiaJune Contributors own the copyright to and are solely responsible for contributed content.