The two spotted spider mite, <em>Tetranychus urticae </em><a title="Carl Ludwig Koch" href="https://en.wikipedia.org/wiki/Carl_Ludwig_Koch">C. L. Koch</a>, 1836 is one of the most important pests of greenhouse crops worldwide. Due to its polyphagic range of hosts and rapid development it forms great populations and as such represents a suitable host/prey for lots of natural enemies usable in biological control. Most commonly used predators of Tetranychid mites are predatory mites (<em>Phytoseiulus persimilis </em>Athias-Henriot, 1957, <em>Amblyseius swirskii </em>Athias-Henriot, 1962<em> </em>,…), but among most voracious predators is the larva of a predatory gall midge, <em>Feltiella acarisuga</em> (<a title="Jean Nicolas Vallot" href="https://en.wikipedia.org/wiki/Jean_Nicolas_Vallot">Vallot</a>, 1827) that was found also in greenhouses of the Biotechnical Faculty in Ljubljana on eggplant leaves in 2017. Besides the predatory gall midge also another predator, staphylinid <em>Oligota oviformis </em>Casey, 1893<em> </em>beetles and larvae were found in great numbers. After positive identification of <em>F. acarisuga </em>found naturally in Slovenia, it can be added to the list of indigenous species of natural enemies and thus can be used in biological control programs in greenhouse crop protection against spider mites.
The olfactive responses of Tetranychus urticae natural enemies in citrus depend on plant genotype, prey presence, and their diet specialization