CACOPSYLLA PYRI PDF

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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Heavy infestations can result in pjri shock”, caused by toxins in the saliva and resulting in defoliation or fruit drop, which may also affect the following year’s crop.

These diseases cause severe growth abnormalities of pear trees. Go to distribution map The colour is variable, ranging between orange-red and black, the thorax having whitish longitudinal stripes on its upper surface. Like most websites we use cookies. The control of pear psyllids is integrated in a wider strategy of pest cscopsylla. Failure of nutrients to be translocated downwards can cause root starvation, with trees either declining slowly or suffering from sudden collapse.

Sucking of larvae and adults, when populations are high, can produce pustules on branchlets and spots on leaves.

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Cacopsylla pyriLinnaeus [1]. High population densities can cause premature leaf drop, which results in reduced flowering the following year.

EPPO Global Database

Later in the summer, the eggs are laid beside the midribs of the leaves, on the cacopsjlla and on the flower buds. The wasp Trechnites psyllae was the main parasitoid. The species is found in Europe, including Scandinavia, and in Asia. The younger nymphs are yellowish with red-purple eyes. Articles with ‘species’ microformats. Retrieved 20 April If you would like to, you cacopzylla learn more about the cookies we use.

Cookies on Plantwise Knowledge Bank Like most websites we use cookies. It is a pest of pear trees, sucking the sap, damaging the foliage, flowers and fruit and diminishing the crop. Originating in Europe and Asia, it has spread to North America.

phri Biological Control Insect predators, such as Anthocoris spp. The wings are transparent, with dark veins and sometimes a smoky appearance near the base. Psylla pyri damages pear trees by sucking the plant sap ; leaves are yellowed and distorted and flower buds and fruitlets are shed.

Knowledge Bank home Change location. Research in an untreated orchard in Turkey found 32 predator and three parasitoid species of insect associated with this psylla.

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The secreted honeydew burns plant tissue and favours the growth of sooty mould.

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

For further information, we recommend you visit the following resources: 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.

For further information, see Lyoussoufi et al.

From Wikipedia, the free encyclopedia. In spring it leaves diapauseand the female starts laying eggs round the base of the swelling buds.

The predators included the predatory bugs Anthocoris nemoralis and Deraeocoris spp. The size of fruit is decreased ypri tree growth is diminished. Retrieved from ” https: Retrieved 19 April 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.

Cacopsylla pyri

This psylla overwinters as an adult, concealing itself in a crack in the bark. This can sometimes lead to deformation of the leaves. This page was last edited on 6 Mayat

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