But the huge bulk of his well illustrated papers are on the systematics of red mites.
2.
"Albino " individuals of normally red citrus red mites ( " Panonychus citri " ) occasionally appear in laboratory colonies, however, these still contain green and yellow pigments.
3.
Around 10 % of the examples observed have been found to be host to a new species of red mite which has been named " Polydiscia deuterosminthurus ".
4.
A . Mites are usually associated with hot and dry conditions, but some, including southern red mites ( which attack holly, azalea and rhododendron ) and spruce spider mites ( which attack spruce, hemlock, pine and arborvitae ) are active in cool seasons.
5.
These red mites are tiny, less than 0.3 mm in length but are huge in comparison to their hosts, averaging a third of the length of " Deuterosminthurus bisetosus ", to which they attach piggyback-fashion, the jaws embedded in the joint between head and prothorax.
6.
They are used in orchards to help control the European red mite ( " Panonychus ulmi " ), the twospotted spider mite ( " Tetranychus urticae " ), and most species of aphids . " Orius insidiosus " can also feed on plants and pollen.
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