Area of distribution and damage of Tetranychus viennensis Zacher.

Object description Download GIS-layers


Object specialist - G.E. David'yan,
GIS-specialist - M.I. Saulich.

Date of creation:

29.02. 2005.


1:20 000 000.

Accuracy of map:

Map was created based on a map with scale 1:33 000 000, and on information taken from literature.


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

Basic contents:

Vector map. Area of species distribution is shown by polygons. Zones of recorded mass outbreak are shown by polygons.

Accuracy of classifier:

Within the area of distribution only a zone of low damage was established according to the extent of damage to fruit crops. Threshold of harmfulness of A. viennensis on most fruits before bud blossoming was determined to be 1000 over-wintering females per 1 meter of twigs; 300-400 specimens of mites of post-emryonal stages per 100 leaves during blossoming period, or 700 specimens per 100 leaves during the time of fruit ripening. In the zone of low damage the harmfulness of A. viennensis is not more than 1 point under the 5-point scale of harmfulness (Livshits & Mitrofanov, 1984).

Method of map production:

After reviewing historic literature, species distribution was hand drawn on maps. 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 map of the area was based on the following publications: Bagdasaryan (1957), Reck (1959), Livshits (1960), Strunkova (1967), Vasil'ev (1973), Mitrofanov et al. (1987). In the former USSR the area includes Moldova, Ukraine (except northern Regions of the Republic, but including Kyiv Region), Central Chernozem Region of Russia, the Northern Caucasus, Primorskii Territory, Georgia, Armenia, Azerbaijan, South of Kazakhstan, Uzbekistan, and Tajikistan. Borders of the damage zone were determined according to the following sources: Livshits (1960), Vasil'ev (1973), Livshits & Mitrofanov (1984). The zone of low damage is comprised of the major area of A. viennensis distribution in the former USSR.

Reference citations:

Bagdasaryan A.T. 1957. Fauna of the Armenian SSR. Tetranychid mites (Superfamily Tetranychoidea). Yerevan: AN Armenian SSR. 163 p. (In Russian)
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.].
Livshits I.Z. 1960. Brown fruit mite (Bryobia redikorzevi Reck, 1947). Systematics, morphology and biology. Pests and diseases of fruiters and decorative plants. Proceedings of the Nikitsky Bot. garden (Yalta), 33: 3-76. (In Russian)
Livshits I.Z., Mitrofanov V.I. 1984. Order Acariformes. In: Kopaneva L.M., ed. Keys to harmful and useful insects and mites on the fruiters and berry crops in the USSR. Leningrad: Kolos. 288 p. (In Russian)
Mitrofanov V.I., Strunkova Z.I., Livshits I.Z. 1987. Keys to the tetranychid mites (Tetranychidae, Bryobiidae) fauna of the USSR and adjacent countries. Dushanbe: Donish. 224 p. (In Russian)
Reck G.F. 1959. Keys to tetranychid mites. Tbilisi: AN Georgian SSR. 151 p. (In Russian)
Sazonov A.P., Burov V.N., Sundukova N.E., Mokrousova E.P., Kolesova D.A., Zolotov L.A., Voinyak V.I., Pristavko V.P., Chernii A.M., Petrushova N.I., Medvedeva G.M., Matvievskii A.S., Maksimova V.I., Atanov N.M., Gummel R.M. 1991. Technology of practical application of biologically active compounds in the IPM on fruit and vegetable cultures against pests (recommendations). Moscow: VASKHNIL. 32 p. (In Russian)
Strunkova Z.I. 1967. About biology of Tetranychus viennensis Zacher in Tajikistan. Izvestiya AN Tadzhikskoi SSR (Dushanbe), 3(28): 47-58. (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 2004 © G.E. David'yan & M.I. Saulich (VIZR; vector map, description), A.T. Bagdasaryan (picture).

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