One of these mites is a well-known predator of herbivorous spider mites:

Correct option is A

Phytoseiulus persimilis is a species of predatory mite widely recognized and commercially used as a biological control agent against herbivorous spider mites, particularly Tetranychus urticae (two-spotted spider mite), which are serious pests of many vegetable, fruit, and ornamental crops.
�� Phytoseiulus persimilis – Key Facts:
· Family: Phytoseiidae
· It actively hunts and feeds on all life stages (eggs, larvae, nymphs, adults) of spider mites.
· Highly effective in greenhouses and open fields.
· Preferred in integrated pest management (IPM) programs as a chemical-free alternative.
· Recognized for its rapid reproductive rate and ability to keep spider mite populations under control.
Explanation for Each Option
(a) Phytoseiulus persimilis ✅
· Correct answer.
· A well-known, effective natural predator of spider mites, used globally in biological control.
(b) Aculops lycopersici ❌
· Also known as the tomato russet mite.
· It is a plant-feeding pest, not a predator—causes damage to tomato plants.
(c) Acarus silo ❌
· A storage mite, commonly found in stored grains and other products.
· Not predatory—feeds on organic material and is sometimes a pest.
(d) Varroa jacobsoni ❌
· Synonymous with Varroa destructor, a parasite of honey bees.
· It is a harmful parasite, not a predator of spider mites.