Area of distribution and damage of Contarinia pyrivora Riley

Object description Download GIS-layers


Object specialists E.I.Ovsyannikova & I.Ya.Grichanov,
GIS-specialist M.I.Saulich.

Date of creation:



1:20 000 000.

Accuracy of map:

It is created on information taken from the open published literature and map of scale 1: 25 000 000.


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

Basic content:

Vector map. Area and zone of damage are shown by polygons.

Accuracy of the classifier:

Within the limits of the C. pyrivora area in the USSR territory, the zone of low damage is allocated where the pest has economic significance. Loss of young fruits can reach 50-90% if there are no control measures (Vasil.ev & Livshits, 1984).

Method of map production:

The map is compiled by results of the analysis of the open published materials. The C. pyrivora area is outlined according to reference data on the species distribution (Mamaev, 1969; Mamaeva & Mamaev, 1981; Vasil.ev & Livshits, 1984; Fedotova & Kovalev, 2001). The published materials describe the Pear Midge distribution in Latvia (Fedotova & Kovalev, 2001) and southern Ukraine; i.e., Crimea (Mamaev, 1969; Mamaeva & Mamaev, 1981; Vasil.ev & Livshits, 1984). Note by Polyakov et al. (1984) on the species presence in Middle Asia and Kazakhstan are not supported by original references. Harming activity of the species is reported in the Crimea only.

Reference citations:

Dombrovskaya E.V. 1934. Description of collection and study of gall midges (Cecidomyiidae) and kinds of damage. Leningrad: AN SSSR, 77 p. (in Russian).
Fedotova Z.A. & Kovalev O.V. 2001. Family Cecidomyiidae. In: Ler P.A., ed. Keys to insects of the Far East of the USSR. V. 6(2). Vladivostok: Dal.nauka, p. 390-614 (in Russian).
Kryshtal. A.F. 1974. Cecidomyiidae. In: Vasil.ev V.P., ed. Pests of agricultural crops and forest plantations. V.2. Arthropods. Kiev: Urozhai, p. 499-519 (in Russian).
Mamaev B.M. 1962. Gall midges, their biology and economic significance. Moscow: AN SSSR, 72 s. (in Russian).
Mamaev B.M. 1969. Cecidomyiidae (Itonididae). In: Bei-Bienko G.Ya., ed. Keys to the insects of the European part of the USSR. V. 5(1). Moscow & Leningrad: Nauka, p. 356-420 (in Russian).
Mamaeva Kh.P. & Mamaev B.M. 1981. Cecidomyiidae. In: Narchuk E.P. & Tryapitsyn V.A., eds. Insects and mites . pests of agricultural plants. V. 4. Hymenoptera and Diptera. Leningrad: Nauka, p. 68-98 (in Russian).
Polyakov I.Ya., Kopaneva L.M. & Dorokhova G.I. 1984. Number and distribution of pests and entomophages of fruit and berry cultures in different agricultural zones of the USSR. In: Kopaneva L.M., ed. Key to harmful and useful insects and mites of fruit and berry cultures in the USSR. Leningrad: Kolos: 6-45 (in Russian).
Vasil.ev V.P. & Livshits I.Z. 1984. Pests of fruit crops. Moscow: Kolos, 399 p. (in Russian).

All rights reserved. Copyright 2007 © E.I.Ovsyannikova, I.Ya.Grichanov (VIZR; description, raster map); M.I.Saulich (VIZR, vector map); I.Ya.Grichanov (VIZR, picture).

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