Everything about Spider Mite totally explained
| superfamilia =
Tetranychoidea
| familia =
Tetranychidae
| subdivision_ranks =
Genera
| subdivision =
Many, including
Panonychus
Tetranychus
}}
Spider mites are members of the
Acari (mite) family
Tetranychidae, which includes about 1600 species. They generally live on the under sides of leaves of plants, where they may spin protective silk webs, and they can cause damage by puncturing the plant cells to feed.
Spider mites are less than 1
mm in size and vary in color. They lay small, spherical, initially transparent eggs and many species spin silk webbing to help protect the colony from predators; they get the 'spider' part of their common name from this webbing. Hot, dry conditions are often associated with population build-up of spider mites.
The best known member of the group is
Tetranychus urticae (the glasshouse red spider mite, or two-spotted spider mite), which is common in tropical and warm temperate zones, and in glasshouses. Other species which can be important pests of commercial plants include
Panonychus ulmi (fruit tree red spider mite) and
Panonychus citri (citrus red mite).
Spider mites, like
hymenopterans and some
homopterous insects, are
arrhenotochous: females are
diploid and males are
haploid. When mated, females somehow avoid the
fecundation of some eggs to produce males. Fertilized eggs produce diploid females. Unmated, unfertilized females still lay eggs, that originate exclusively
haploid males.
Spider Mite Picture
Countermeasures
Pesticides sold on the market often contain
Azocyclotin as active ingredient. This is however poisonous and therefore shouldn't be used on edible fruits and herbs.
Natural prevention includes frequent spraying with water or
Mesostigmata.
Further Information
Get more info on 'Spider Mite'.
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