Area and damage zones of Psylla mali Schmidberger

Object description Download GIS-layers


Specialist-biologist M.N. Berim,
GIS-specialist M.I. Saulich.

Date of creation:



1:20 000 000.

Accuracy of map:

Map was created based on materials of map of natural scale 1:33 000 000.


"Alber's Equal Area Conic", 9, 1001, 7, 100, 0, 44, 68, 0, 0.

Basic contents:

Vector map. Area of species distribution is shown by polygons. Zones of pest damage are shown by polygons.

Accuracy of classifier:

The insect area is divided into zones of high and low damage based on published materials (Sokol'nikova, 1979, 1980). The zone of high damage includes regions that are characterized by having 25 or more insects on one flower rosette; the zone of low damage is characterized by pest numbers from 3-4 (economical threshold) to 24 insects on one rosette.

Method of map production:

Scientists were given maps with boundaries of Oblasts and arable lands. After reviewing historic literature, species distribution was hand drawn on maps. Materials of VIZR expeditions was also used. If data were on the Oblast-level, distribution is on the Oblast level. In some cases, Oblast.s are further refined by boundaries of the Arable Land Map (Koroljeva et al., 2003). Hand drawn maps were scanned, georeferenced and vectorized. The borders of zones of different harmfulness were determined according to the following sources: Shchegolev (1960), Vasil'ev et al. (1973), Sokol'nikova (1979, 1980), Migulin (1983). The northern border was determined according to the following sources: Osmolovskii (1955), Shaposhnikov (1964), the data of VIZR expeditions, and data from a suction trap. The results of the analysis of host (apple- trees) spreading was used according to the atlas of USSR vegetation, taking into account the temperature preference of this insect. The map of apple tree distribution within the territory of the Former Soviet Union has also been used for the correction of the borders of damage zones (Tochenov et al., 1984).

Reference citations:

Koroljeva IE, Vilchevskaya EV, Ruhovich DI. 2003. Digital Arable Land Map. Laboratory of Soil Information of the Dokuchaev Soil Institute, Moscow, Russia [Based on: Yanvareva LF. (ed.), Martynjuk KN., Kisileva NM. 1989. Map of Land Use, Faculty of Geography, Moscow State University, Moscow, Russia.].
Migulin A.A., ed. 1983. Agricultural entomology. Moscow: Kolos. 251-252 p. (In Russian)
Osmolovskii G.E., ed. 1955. Album of pests and diseases on agricultural cultures in Non-Chernozem zone of European part of Russia. Moscow-Leningrad: Agricultural Publishing house. 210 p. (In Russian)
Shaposhnikov G.H. 1964. Family Psyllidae. In: Bei-Bienko G.Ya., ed. Keys to the insects of the European part of the USSR. V. 1. Moscow-Leningrad: Nauka. 469 p. (In Russian)
Shchegolev V.N. 1960. Agricultural entomology. Moscow-Leningrad: GIZ sel'skokhozyaistvennoi literatury. 448 p. (In Russian)
Sokol'nikova N.V. 1979. Harmfulness of apple sucker in the North-Western zone of RSFSR. In: Novozhilov K.V., ed. Injuriousness of insect pests and diseases of agricultural crops. Proceedings of VIZR. Leningrad: VIZR. 67-79 p. (In Russian)
Sokol'nikova N.V. 1980. Studying of apple sucker harmfulness. Zashchita rastenii, 12: 46-47. (In Russian)
Tochenov V.V., ed. 1984. Atlas of the USSR. Moscow: GUGK. 260 p. (In Russian)
Vasil'ev V.P., ed. 1973. Pests of agricultural crops and forest plantations. V. 1. Kiev: Urozhai. 496 p. (In Russian)

Right and copyright:

All rights reserved. Copyright 2005 © M.N. Berim & M.I. Saulich (VIZR, vector map, description), M.N. Berim (VIZR, picture).

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