# Panonychus ulmi

Panonychus ulmi, the European red mite, is a species of mite which is a major agricultural pest of fruit trees. It has a high reproductive rate, a short generation time (21 days at 20 °C or 68 °F) and produces many broods in a year, all of which contribute to its pest status. It has a cosmopolitan distribution, and a very wide host range, having been found on the following plants:
* Acacia longifolia
* Aesculus hippocastanum
* Alnus glutinosa
* Alnus incana
* Amaranthus
* Amelanchier
* Artocarpus heterophyllus
* Atropa belladonna
* Avena sativa
* Betula pubescens
* Betula verrucosa
* Calystegia sepium
* Camellia sinensis
* Castanea sativa
* Chenopodium
* Citrus aurantiifolia
* Citrus aurantium
* Citrus grandis
* Convolvulus arvensis
* Corylus avellana
* Cotoneaster tomentosus
* Crataegus monogyna
* Crataegus succulenta
* Cucumis
* Cucurbita maxima
* Cucurbita pepo
* Cydonia oblonga
* Dalbergia sissoo
* Daucus carota
* Desmodium canescens
* Diospyros
* Eriobotrya japonica
* Fagus sylvatica
* Ficus carica
* Fragaria vesca
* Frangula alnus
* Fraxinus excelsior
* Gardenia jasminoides
* Hibiscus
* Hydrangea macrophylla
* Juglans regia
* Juncus maritimus
* Laburnum alpinum
* Lonicera japonica
* Malus domestica
* Malva
* Medicago sativa
* Morus nigra
* Myrica pensylvanica
* Petroselinum crispum
* Phaseolus
* Phlox
* Polygonum aviculare
* Populus tremula
* Potentilla fruticosa
* Prunus americana
* Prunus armeniaca
* Prunus avium
* Prunus cerasus
* Prunus chinensis
* Prunus divaricata
* Prunus domestica
* Prunus dulcis
* Prunus institia
* Prunus padus
* Prunus persica
* Prunus spinosa
* Pyracantha
* Pyrus baccata
* Pyrus communis
* Pyrus pyrifolia
* Pyrus sargentii
* Quercus
* Rhamnus frangula
* Ribes aureum
* Ribes sanguineum
* Robinia pseudoacacia
* Rosa canina
* Rosa multiflora
* Rosa palustris
* Rubus idaeus
* Rubus occidentalis
* Rumex obtusifolius
* Salix alba
* Salix caprea
* Sapindus saponaria
* Sasa kurilensis
* Sophora japonica
* Sorbus aria
* Sorbus aucuparia
* Sorbus chrysophylla
* Sorbus conradina
* Sorbus fennica
* Sorbus hostii
* Sorbus scandica
* Sorghum halepense
* Symphoricarpos foetidus
* Syzygium
* Tilia cordata
* Trifolium pratense
* Triticum aestivum
* Ulmus americana
* Ulmus campestris
* Ulmus glabra
* Ulmus hollandica
* Ulmus procera
* Ulmus rubra
* Ulmus scabra
* Vicia sativa
* Vitis labrusca
* Vitis vinifera
* Wisteria sinensis
* Zea mays
Panonychus ulmi was first described by Carl Ludwig Koch in 1836, under the name Tetranychus ulmi. It has also been known under a number of synonyms:
* Tetranychus ulmi Koch, 1836
* Oligonychus ulmi : Hirst, 1920
* Metatetranychus ulmi : Oudemans, 1931
* Paratetranychus ulmi : André, 1937
* Panonychus ulmi : Ehara, 1956
* Tetranychus pilosus Canestrini & Fanzago, 1876
* Paratetranychus pilosus : Zacher, 1913
* Metatetranychus pilosus : Oudemans, 1931
* Paratetranychus pilosus alboguttatus Zacher, 1913
* Tetranychus alboguttatus Zacher, 1913
* Metetetranychus alboguttatus : Oudemans, 1931
* Paratetranychus pilosus occidentalis McGregor & Newcomer, 1928
* Oligonychus alni Oudemans, 1929
* Metatetranychus alni : Oudemans, 1931
* Oligonychus muscorum Oudemans, 1929
* Metatetranychus muscorum : Oudemans, 1931
* Oligonychus potentillae Oudemans, 1929
* Metatetranychus potentillae : Oudemans, 1931
* Metatetranychus mali Oudemans, 1931
* Metatetranychus canestrinii Oudemans, 1939