Tetranychus urticae Koch, 1836, Koch, 1836

Toroitich, Faith J., Ueckermann, Edward A., Theron, Pieter D. & Knapp, Markus, 2009, The tetranychid mites (Acari: Tetranychidae) of Kenya and a redescription of the species Peltanobia erasmusi Meyer (Acari: Tetranychidae) based on males, Zootaxa 2176, pp. 33-47: 45-46

publication ID

http://doi.org/ 10.5281/zenodo.189364

persistent identifier

http://treatment.plazi.org/id/03ED3C65-AC15-6146-FF28-F535B335FE2A

treatment provided by

Plazi

scientific name

Tetranychus urticae Koch, 1836
status

 

Tetranychus urticae Koch, 1836  

Knob of male aedeagus always small, axis of knob parallel to shaft axis or forms a small angle with shaft axis; dorsal margin of knob and development of anterior and posterior projections may vary, but in most case they are similar (Figure E); male empodium I with strong medio-dorsal spur; about length of 2 proximoventral spurs; empodium II consists of 3 pairs of proximoventral hairs and a strong mediodorsal spur.

Specimens examined: From many hosts all over Kenya: Lycopersicon esculentum   ( Solanaceae   ), Phaseolus vulgaris   L. ( Fabaceae   ), Zea mays   L. ( Poaceae   ), Amaranthus hybridus   L. ( Amaranthaceae   )., Carica papaya   ( Caricaceae   ), Galinsoga parviflora   ( Asteraceae   )., Desmodium   sp. ( Fabaceae   ), Bidens pilosa   ( Asteraceae   ), Cucurbita pepo   ( Cucurbitaceae   ), Citrullus lanatus   ( Cucurbitaceae   ), Lactuca sativa   ( Asteraceae   ), Rosa   sp. ( Rosaceae   ), Passiflora edulis   ( Passifloraceae   ), Helianthus annuus   ( Asteraceae   ), Euphorbia   sp. ( Euphorbiaceae   ), Tradescantia fluminensis   ( Commelinaceae   ), Citrus   sp. ( Rutaceae   ), Brassica   sp. ( Brassicaceae   ), Lantana camara   ( Verbenaceae   ), Datura stramonium   ( Solanaceae   ), Pisum sativum   ( Fabaceae   ), Dianthus caryophyllus   ( Caryophyllaceae   ).

Remark: Tetranychus urticae   was first described on Glyine max   and Urtica   sp from Germany ( Koch, 1836). It is one of the most cosmopolitan spider mite species with worldwide distribution and a wide host range. It is considered a pest of many crops and is the most studied spider mite species with a high rate of pesticide resistance reported on this species by many authors. In Kenya, it is a major menace in cut flower production especially in Rosa   sp. Its first record in Kenya was on Allium ampeloprasum   ( Alliaceae   ) from Machakos district and on Lathyrus odorata   ( Fabaceae   ) from Nairobi ( Baker and Pritchard, 1960).