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.
|Published (Last):||18 July 2016|
|PDF File Size:||17.66 Mb|
|ePub File Size:||17.99 Mb|
|Price:||Free* [*Free Regsitration Required]|
In Croatia, it is a sporadic olive pest. When nymphal colonies are on the apical parts of young shoots, sap loss is not important.
Olive psyllid, Euphyllura olivina Costa Hemiptera: Did not expect to encounter this species here – doesn’t seem to have been recorded from the island before. It is best to monitor for the first generation of olive psyllids because the reduction of that generation can substantially reduce population levels of the second generation.
How to Manage Pests
Likewise, nothing has been reported on natural enemies e. Secretions made by Euphyllura olivina Costa on buds of an olive tree, Olea europaea L. These species euphlylura varying and somewhat overlapping distributions in the world.
The life cycle is about 3 months depending on temperature. When colonies are on inflorescences, the wuphyllura of sap loss is directly proportional to psyllid numbers and this could affect the amount of fruit that is set.
Although Euphyllura olivina is common in many olive growing areas in the Mediterranean and Middle East, little is known about its biology in those areas, and its distribution in California is not certain. Sooty mold on leaves of California laurel, Oolivina californica.
The rate of mortality increases at temperatures above An olive psyllid, Euphyllura olivina Costain its first instar on an olive leaf.
Some general predators e. As its common name suggests, the olive psyllid Figure 1 is found within the family Psyllidae, which contains over genera Myers et al.
Researchers are seeking exotic natural enemies from locations in Europe where the psyllid may be found. In southern California, psyllid numbers decline after June, most likely because it is hot.
Olive psyllid – Euphyllura olivina (Costa, ) (Hemiptera:Psyllidae) an occasional pest in olive
Studies conducted by University of California Riverside researchers and the CDFA are euphyllurx limited to determining the distribution of the psyllid in California and defining its seasonal biology where is it is found. The olive psyllid nymphs and adults produce a white, waxy secretion Figure 2which can cause premature flower drop during infestations. Three insect species are commonly referred to as the olive psyllid: It is unclear at this time whether the distribution of Euphyllura olivina will significantly expand beyond San Diego and Orange Counties.
The first generation feeds as nymphs beginning in March Alford Euphyllura olivina has three host plants that it feeds upon and lays eggs on: See our Home pageor in the U. Olive Psyllid, Euphyllura olivina Costa Hemiptera: Feeding may cause flowers to drop prematurely. University of Michigan Museum of Zoology.
Focused application of euphyllhra to control this pest is usually not required if the regular control measures against the olive moth and olive fruit fly are taken. The olive psyllid damages trees through direct feeding on buds, flowers, tender shoots, and oliviba fruit and also through the production of honeydew, which increases sooty mold development. Olive trees aren’t common on the island but are used as an ornamental tree in a few places.
Notice the waxy secretions covering the stem. The wax can actually protect the psyllid from some insecticides so it is best to control the first generation when buds and flowers are not present. Euphyllura olivina can be confused with Euphyllura straminea because they are similar in appearance.
Host plants need to be monitored for olive psyllid populations to prevent infestations from establishing in new locations. 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.
The first generation becomes active in the spring as temperatures warm up.
Agro technical measures to reduce the pest populations and damage to the olives include quality pruning, suckers and watersprouts removal during summer and autumn-winter period, dense planting avoidance, optimum fertilization by nitrogen fertilizers and selection of an appropriate olive pruning system.
Efforts were made to establish colonies euphyllra one parasitoid collected in Spain, but these were unsuccessful. Contributed by Alex Bairstow on 21 May, – 5: Females start egg laying when new shoots appear on olive trees. Olive psyllid, Euphyllura olivina Costanymphs on olive stem. Presently, the olive psyllid is widely distributed in San Diego County from the coast to as far inland as Valley Center and Fallbrook. Olive Psyllid management guidelines.
Pest Notes Publication Females may lay more than 1, eggs. Olive psyllid – Euphyllura olivina Costa, Hemiptera: The euphylkura generation is often unnoticed, appearing in Eu;hyllura and October. Psyllidae an occasional pest in olive.
For noncommercial purposes only, any Web site may link directly to this page. 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 euphylluta VirginiaJune Numbers remain low until the following spring when buds appear on the trees.
The third generation of nymphs appears in September and October Zalom et al. Typically, three generations of olive psyllids occur annually. Euphylluraa pest management for home gardeners and landscape professionals.
Population densities greater than 20 nymphs per inflorescence can cause such losses.