Area of distribution and damage of Eriophyes pyri Pgst.

Object description Download GIS-layers


Object specialists . J.M. Malysh & A.N.Frolov,
GIS-specialist - M.I.Saulich.

Date of creation:



1:20 000 000.

Accuracy of the map:

It is created on materials of the map with scale 1:33 000 000, on the basis of information taken from literature.


.Alber.s Equal Conica for the USSR., 9, 1001, 7, 100, 0, 44, 68, 0, 0.

Basic content:

Vector map, which consists of three thematic layers. Area of distribution and zones of damage are shown by polygons.

Accuracy of the classifier:

Threshold of harmfulness of Pearleaf Blister Mite in the phase of adult averages 3 mites per leaf. Zones of high (above the threshold) and low (below threshold) damage are distinguished within the pest area on the basis of expert estimations of injury of pear orchards. Zone of high damage typically corresponds the zone of industrial pear cultivation.

Method of map production:

Data from the publications are used for allocation of area and zones of pest damage. A map of the area is based on publications of Shvanderov (1979), Minder (1957), Bagdasaryan (1981), Sokolov (1960), Man.ko (1958), Busuiok (1988). The species is found almost everywhere throughout the European part of the Former USSR territory (Baltic States, Ukraine, Moldova, Belarus), Caucasus (Georgia, Azerbaijan, Armenia), Kazakhstan, Middle Asia and Altai Territory. Zone of high damage includes territory of pear cultivation approximately southward of Belarus to Azerbaijan and eastward of Ukraine to Kirov Region. Boundaries of the zones of damage are given according to the following works: Bagdasaryan (1981), Busuiok (1988), Minder (1957), Prokof.ev (1987), Cherkezova (2001). The pest damage zones are corrected according to vector layer within the regions of the most prominent pear distribution (Terekhina, N.V. & and Kalibernova, N.M.).

Reference citations:

Bagdasaryan, A.T. 1981. Eriophyidae acarines of fruit trees and shrubs in Armenia. Erevan: Izdatel'stvo AN Armyanskoi SSR. 202 p. (in Russian).
Busuiok, M.N. 1988. Resistance of pear trees varieties to pearleaf blister mite. In: Gulii, V.V., ed. Agricultural cultures protection from diseases, pests and weeds in conditions of MSSR (Collection of scientific proceeding). Kishinev: Kishinev agricultural institute, p. 14-19 (in Russian).
Cherkezova, S.R. 2001. Herbivorous acarines. In: Khvostova, I.V. and Makarova, E.V., ed. System-forming ecological factors and criteria of zones of sustainable development of fruit growing in Northern Caucasus. Krasnodar: Northern Caucasus Research Institute for Orchard and Grape Growing, p. 108-111 (in Russian).
Minder, I.F. 1957. Materials on biology of pearleaf blister mite (Eriophyes pyri Pgst.). Zoologicheskii zhurnal 36(7): 1007-1015 (in Russian).
Prokof.ev, M.A. 1987. Orchard protection from pests in Siberia. Moscow: Rossel.khozizdat, 239 p. (in Russian).
Shvanderov, F.A. 1979. Tetrapod mites (Acarina, Eriophyoidea) on pear. In: Shaldybin, L.S., ed. Fauna, systematics, biology and ecology of helminthes and their intermediate hosts (Republic collection of proceeding). Gor.kii: Gor'kii State Pedagogical institute, p. 109-117 (in Russian).
Sokolov, L.M. 1960. Pearleaf blister mite (Eriophyes pyri Pgst.) and its control measures under conditions of Michurin area of Tambov region. Zoologicheskii zhurnal 39(4): 521-526 (in Russian).
Vereshchagina, V.V. 1965. Pearleaf blister mite. Zashchita rastenii ot vreditelei i boleznei 1: 37-38 (in Russian).

Right and copyright:

All rights reserved. Copyright 2005 © J.M. Malysh, A.N.Frolov & M.I. Saulich (VIZR; vector map, description).

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