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General information about Cacopsylla pyri (PSYLPI). Sucking of larvae and adults, when populations are high, can produce pustules on branchlets and spots on leaves. This can sometimes lead to deformation of. ABSTRACT. The psyllid Cacopsylla pyri L. (Hemiptera: Psyllidae), is one of the principal pests of pear (Pyrus spp.) orchards and, along with its natural enemies, .

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The colour is variable, ranging between orange-red and black, the thorax having whitish longitudinal stripes on its upper surface. Go to distribution map Close Find out more.

Cacopsylla pyri

This is to ensure that we give you the best experience possible. If infestation is heavy, considerable damage can be caused by the larvae of C. The larvae diminish plant growth by withdrawal of plant-sap.

Retrieved 20 April The control of pear psyllids is integrated in a wider strategy of pest monitoring. Later in the summer, the eggs are laid beside the midribs of the leaves, cacopsyylla the petioles and on the flower buds. Cookies on Plantwise Knowledge Bank Like most websites we use cookies. In spring it leaves diapauseand the female starts laying eggs round the base of the swelling buds. Heavy infestations can result cacopaylla “psylla shock”, caused by toxins in the saliva and resulting in defoliation or fruit drop, which may also affect the following year’s crop.

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For further information, we recommend you visit the following resources: Considerable damage is caused by the honeydew secreted by the larvae which stains leaves and fruit and which serves as the growth medium of black sooty mould.

This page was last edited on 6 Mayat By using this site, you agree to the Terms of Use and Privacy Policy. Biological Control Insect predators, such as Anthocoris spp.

The predators included the predatory bugs Anthocoris nemoralis and Deraeocoris spp. Retrieved from ” https: The psyllia can also carry mycoplasma in their saliva which can cause disease of the conducting cells in the tree’s phloem.

Psylla pyri damages pear trees by sucking the plant sap ; leaves are yellowed and distorted and flower buds and fruitlets are shed.

Psylla pyri – Wikipedia

From Wikipedia, the free encyclopedia. Views Read Edit View history. Continuing to use www. Cacopsylla pyriLinnaeus [1]. Research in an untreated orchard in Turkey found 32 predator and three parasitoid species of insect associated with this psylla.

High population densities can cause premature leaf drop, which results in reduced flowering the following year.

Cacopsylla pyri (PSYLPI)[Overview]| EPPO Global Database

Articles with ‘species’ microformats. Psylla pyricommonly known as the pear psylla or pear psyllidis a true bug in the family Psyllidae. Orchard Pest Management Cacosylla.

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Pyrus communis European pear. Sucking of larvae and adults, when populations oyri high, can produce pustules on branchlets and spots on leaves. EU pesticides database www. The secreted honeydew burns plant tissue and favours the growth of sooty mould. Failure of nutrients to be translocated downwards can cause root starvation, with trees either declining slowly or suffering from sudden collapse.

Later instar nymphs are purplish-brown or reddish-brown, with white longitudinal stripes and black patches; the developing wing-pads each bear a single knobbed bristle. These diseases cause severe growth abnormalities of pear trees. The excess honeydew produced by cacopsyla insects coats the leaves, covering up the stomataand encourages the growth of pjri mould.

If you would like to, you can learn more about the cookies we use. Trees grafted onto Pyrus pyrifolia or Pyrus ussuriensis rootstocks are more susceptible to this disease than those on Pyrus communis.

The younger nymphs are yellowish with red-purple eyes. This can sometimes lead to deformation of the leaves. Pests of Fruit Crops: