Petrov, V.M., 1971.
On the study of spider mites species structure and ecology in Latvia. Vestis, 7 (288): 26-32.

Abstract
With the purpose to study the structure, ecology of spider mite spec1es iп Latvia grass land and woodlaпd vegetatioп was investigated iп 11 administrative districts. Оп 52 species of plaпts be!ongiпg to 21 families 12 spccies of spider rnites were revealed, pertaiпiпg to 4 genera: Scliizotetranychus, Tetranychus, Panonychus, Olygonychus. 5 of theese species (Schizotetranychus pruni Oud., S . populi Koch, S. uncatns Garm., S. carpini Oud ., S. textor Waiпst.) were iпvestigated for the first time iп Latvia. Two taЫes are given, showiпg the distributioп of spider mites оп various species of plaпts, the density of their populatioп and locatioп in Latvia. Most harrnful 1п Latvia are the folloiпg species: Tetranychus urticae Koch, T. cinnabarinus Boisduval, Panonychus ulmi Koch. Besides spider mites 3 species of predaceous mites of the Phytoseiidae family were also fouпd: Typholodromus fiпlaпdicus Oudemans . Paraseiulus incognitus Wainsteiп, Phytooseius salicis Waistein.

    • Summary

  • Nomenclature
  • Identification
  • Host plants
  • Distribution
  • Other biological features

    • Nomenclatural data

    Identification tools

    Host plant data (60 results)

  • Eotetranychus carpini (Oudemans, 1905) [Betulaceae: Alnus glutinosa]; Eotetranychus populi (Koch, 1838) [Salicaceae: Populus nigra; Salix alba]; Eotetranychus pruni (Oudemans, 1931) [Fagaceae: Quercus robur; Rosaceae: Crataegus sanguinea; Malus domestica; Prunus domestica; Sapindaceae: Acer negundo; Acer platanoides; Ulmaceae: Ulmus glabra; Ulmus laevis]; Eotetranychus tiliarium (Hermann, 1804) [Malvaceae: Tilia cordata; Sapindaceae: Aesculus hippocastanum]; Eotetranychus uncatus Garman, 1952 [Betulaceae: Betula pendula];
  • Neotetranychus rubi Trägårdh, 1915 [Rosaceae: Rubus idaeus];
  • Oligonychus (Oligonychus) ununguis (Jacobi, 1905) [Pinaceae: Picea abies];
  • Panonychus ulmi (Koch, 1836) [Rosaceae: Malus domestica; Prunus domestica; Pyrus communis; Ulmaceae: Ulmus glabra];
  • Schizotetranychus schizopus (Zacher, 1913) [Salicaceae: Salix alba; Salix caprea]; Schizotetranychus textor Wainstein, 1954 [Rosaceae: Rosa sp.];
  • Tetranychus urticae Koch, 1835 [Amaranthaceae: Atriplex patula; Araceae: Zantedeschia aethiopica; Asteraceae: Achillea millefolium; Chrysanthemum sp.; Solidago canadensis; Betulaceae: Corylus avellana; Caprifoliaceae: Lonicera tatarica; Symphoricarpos albus; Caryophyllaceae: Dianthus sp.; Convolvulaceae: Convolvulus arvensis; Cucurbitaceae: Cucumis sativus; Cucurbita pepo; Fabaceae: Caragana arborescens; Melilotus albus; Phaseolus vulgaris; Pisum sativum; Trifolium pratense; Trifolium repens; Vicia faba; Fagaceae: Quercus robur; Grossulariaceae: Ribes nigrum; Malvaceae: Tilia cordata; Plantaginaceae: Plantago major; Poaceae: Zea mays; Rosaceae: Filipendula ulmaria; Fragaria vesca; Fragaria x ananassa; Malus domestica; Prunus domestica; Rosa sp.; Sorbus aucuparia; Spiraea chamaedryfolia; Sapindaceae: Acer negundo; Solanaceae: Solanum lycopersicum; Solanum tuberosum; Urticaceae: Urtica dioica; Urtica urens].

    • Distribution data (11 results)

  • Eotetranychus carpini (Oudemans, 1905) [Palearctic: Latvia]; Eotetranychus populi (Koch, 1838) [Palearctic: Latvia]; Eotetranychus pruni (Oudemans, 1931) [Palearctic: Latvia]; Eotetranychus tiliarium (Hermann, 1804) [Palearctic: Latvia]; Eotetranychus uncatus Garman, 1952 [Palearctic: Latvia];
  • Neotetranychus rubi Trägårdh, 1915 [Palearctic: Latvia];
  • Oligonychus (Oligonychus) ununguis (Jacobi, 1905) [Palearctic: Latvia];
  • Panonychus ulmi (Koch, 1836) [Palearctic: Latvia];
  • Schizotetranychus schizopus (Zacher, 1913) [Palearctic: Latvia]; Schizotetranychus textor Wainstein, 1954 [Palearctic: Latvia];
  • Tetranychus urticae Koch, 1835 [Palearctic: Latvia].

    • Other biological features