Pests

Area of distribution and harmfulness of Phorbia fumigata Meigen.

Object description Download GIS-layers

Authors:

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

Date of creation:

5.01.2004.

Scale:

1:20 000 000.

Accuracy of map:

Created using information taken from open-published literature and maps of scale 1:33 000 000.

Projection:

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

Basic content:

Vector map. Zones of harmfulness are shown by polygons. Reported distribution is shown by points.

Accuracy of the classifier:

Zones of moderate and low damage are outlined. In the zone of moderate damage 23-34% of main shoots are attacked by the Spring Fly, and cause yield losses more than 5-7% in crops growing after fallow (average density of 16-24 flies per water trap or 12-16 flies per 100 net sweeps). Over 15-18% of main shoots are attacked in crops growing after winter wheat (average density 8-12 flies per water trap or 6-8 flies per 100 net sweeps) (Makhotkin, Pavlyushin, 2001, 2003). In zone of low harm, yield losses do not exceed 5% under the same conditions. Seeding at heavier rates and fertilizing allows optimal yield levels despite preserve of insects. At the same time, the optimum seeding and mineral dressing does not allow yield losses under crop thinning equal even to 30-50% sow over (Tanskii et al., 1998; Artokhin, 2002).

Procedure of map production:

The map was compiled as a result of analysing open published cartographical materials and literature. Makhotkins's map (Makhotkin and Pavlyushin, 2003, Fig. 5) is used as a base map. The zones of moderate and low damage to wheat, rye, triticale are based on this source. Border of the zone of moderate damage in the Northern Caucasus (between the populated places of Rostov-na-Donu, Eisk and Egorlykskaya) were determine by an analysis of Makhotkins's map (Makhotkin and Pavlyushin, 2003, Fig. 4). Single reports on findings of the species outside the area of low damage (the Leningrad and Voronezh Regions, Estonia, Byelorussia and Uzbekistan) are also according to this source. Distribution was verified using the Palaearctic Catalogue (Dely-Draskovits, 1993).

Reference citations:

Artokhin K.S. 2002. Estimation of harmfulness of Spring Fly Phorbia securis Tien. (Diptera, Anthomyiidae) in the Rostov Region. In: 12th Congr. Russ. Entomol. Soc. (abstracts of reports). Saint Petersburg. 20-21 pp. (In Russian)
Dely-Draskovits A. 1993. Anthomyiidae. In: Soos A., Papp L. & Oosterbroeck P., editors. Catalogue of Palaearctic Diptera 13. Budapest: Akademiai Kiado. 11-102 pp.
Makhotkin A.G., Pavlyushin V.A. 2001. Monitoring and control of Phorbia spp. on winter wheat. St. Petersburg: VIZR. 36 pp. (In Russian)
Makhotkin A.G., Pavlyushin V.A. 2003. Flies of the genus Phorbia in Azov-Black-Sea steppe. St. Petersburg: VIZR. 170 pp. (In Russian)
Tanskii V.I., Levitin M.M., Ishkova T.I., Kondratenko V.I. 1998. Phytosanitary diagnostics in integrated grain pest management (Methodical instructions). In: Collection of methodological recommendations on Plant Protection. St. Petersburg: VIZR. 5-55 pp. (In Russian)

Right and copyright:

All rights reserved.
Copyright 2004 (c) I.Ya.Grichanov, E.I.Ovsyannikova & M.I.Saulich (VIZR; vector map, description); I.Ya.Grichanov (VIZR, photo).