Orchard-ecology
Guides
Anystidae
whirligig mites
Anystidae is a family of predatory mites comprising over 100 species, commonly known as whirligig mites. They are active generalist predators found in soils and on vegetation worldwide. The family includes notable genera such as Anystis, Tarsotomus, and Chaussieria. Several species have been investigated for biological control potential against agricultural pests including thrips, aphids, and spider mites.
Orius vicinus
minute pirate bug
Orius vicinus is a predatory minute pirate bug (Hemiptera: Anthocoridae) studied extensively for biological control potential. Under laboratory conditions at 26°C, it completes development from egg to adult in approximately 18–23 days, with females living 15–17 days and producing 31–61 eggs. The species exhibits Type II or Type III functional responses depending on prey stage, with adult prey generally preferred over eggs. It has been observed feeding on spider mites, whiteflies, thrips, and other small arthropods in agricultural settings. Unlike some congeners, O. vicinus does not enter reproductive diapause and continues oviposition through winter conditions.
Swammerdamia pyrella
Little Ermel, Rufous-tipped Swammerdamia Moth
A small ermine moth (Yponomeutidae) with a wingspan of 10–13 mm, distributed across Europe, North America, and Japan. Adults fly in two generations from late April to August. Larvae feed on Rosaceae fruit trees, initially mining leaves then feeding externally while tying leaf edges with silk to form protective 'boats'. The species serves as host to a diverse parasitoid community and is subject to significant natural biological control.
Zetzellia mali
apple mite, Zetzellia mite
Zetzellia mali is a predatory mite in the family Stigmaeidae, widely distributed across apple-growing regions of the world. This small arachnid serves as an important natural enemy of phytophagous mites in orchards, particularly targeting spider mites (Tetranychidae) and eriophyid mites. The species exhibits a three-generation annual life cycle in temperate climates, with adult females overwintering in protected locations on host trees. While less efficient at population regulation than some competing predatory mites such as phytoseiids, Z. mali contributes significantly to biological control in integrated pest management programs.