Alex Hyde / Red velvet mite (Trombidium holosericeum) running across soil where it hunts smaller invertebrates. Peak District National Park, Derbyshire, UK. April.

Theo Bosboom / Water mite larvae (Arrenurus) parasitizing Common blue damselfly (Ennalagma cyathigerum), Hondeven, the Netherlands, July.

Juergen Freund / Paralytic tick (Ixodes holocyclus) with engorged body on human hand, this species affects many species, Spectacled flying fox (Pteropus conspicillatus) among them and infects them with a toxin that ca...

Aflo / Composite image of tick showing how its body expands after feeding

Nick Upton / Gorse spider mite (Tetranychus lintearius) silk tents shrouding a Common gorse (Ulex europaeus) bush on heathland, Devon, UK, September.

Nick Upton / Common Sexton / Burying beetle (Nicrophorus vespilloides) crawling over a Mole (Talpa europaea) carcass, carrying a number of phoretic carrion feeding mites (Poecilochirus carabi), Brecon Beacons Nati...

Nigel Cattlin / Adult Spotted cucumber beetle (Diabrotica undecimpunctata), agricultural pest, covered in phoretic mites, UK.

Nick Upton / Red poplar leaf beetle (Chrysomela populi) with parasitic mites (Linobia coccinellae) attached, crawling along Willow (Salix sp.) sapling , Kenfig National Nature Reserve, Glamorgan, Wales, UK, July.

Doug Wechsler / Red velvet mite (Trombidiidae sp.) on American beech (Fagus grandifolia) trunk, Philadelphia, Pennsylvania, USA. October.

Doug Wechsler / American dog tick (Dermacentor variabilis), vector for Tularemia and Rocky Mountain Spotted Fever, on wood, Montgomery County, Pennsylvania, USA. June.

Nigel Cattlin / Two-spotted spider mite (Tetranychus urticae) damage to Capsicum pepper (Capsicum annuum) leaves in a garden greenhouse, Berkshire, UK, August.

Nigel Cattlin / Two-spotted spider mite (Tetranychus urticae) bronzing and grazing damage to tomato (Solanum lycopersicum) leaf upper surface, Berkshire, UK, August.

Nigel Cattlin / Two-spotted spider mite (Tetranychus urticae) bronzing and grazing damage to tomato (Solanum lycopersicum) leaf upper surface, Berkshire, UK, August.

Nigel Cattlin / Two-spotted spider mite (Tetranychus urticae) bronzing and grazing damage to tomato (Solanum lycopersicum) leaf upper surface, Berkshire, UK, August.

Bruce Thomson / Paralysis tick (Ixodes holocyclus) female on human skin, feeds on mammals, birds and reptiles, highly dangerous to humans, can lead to paralysis and death if not removed, Bunya Pine Mountains National...

Bruce Thomson / Paralysis tick (Ixodes holocyclus) female on human skin, feeds on mammals, birds and reptiles, highly dangerous to humans, can lead to paralysis and death if not removed, Buyna Pine Mountains National...

Nigel Cattlin / Two-spotted spider mite (Tetranychus urticae) grazing damage to the leaves of a perennial pot plant Nemesia, Berkshire, England, UK, June

Nigel Cattlin / Surface patches on a sunflower leaf caused by two-spotted spider mite (Tetranychus urticae) feeding on the underside of the leaf, Berkshire, England, June

Alex Hyde / Sheep / Deer Tick (Ixodes ricinus) feeding on human host causing localised swelling. Scotland, UK. June. This species can be a vector for both Lyme disease and tick-borne encephalitis.

Alex Hyde / Sheep Tick (Ixodes ricinus) photographed on a white background in mobile field studio. Devon, UK. May.

Alex Hyde / Red Velvet Mite (Trombidium holosericeum) photographed on a white background in mobile field studio. Peak District National Park, Derbyshire, UK. April. Focus stacked image.

Alex Hyde / Tick (Ixodidae) waing for passing host on leaf in rainforest understory vegetation. Danum Valley, Sabah, Borneo.

Nigel Cattlin / Photomicrograph of a citrus red spider mite (Panonychus citri) with eggs on a lemon leaf, Italy

Nigel Cattlin / Citrus rust mite (Phyllocoptruta oleivora) blister damage visible on the upper side of lemon leaves, Sicily, Italy

Will Watson / Nail galls (Eriophytes tiliae) on Common lime (Tilia x europaeus) leaves, woodland, Herefordshire Plateau, England, UK.

Karine Aigner / Blood engorged camel tick (Hyalomma dromedarii) with tracks in the sand dunes of Erg Chebbi, Merzouga, Morocco.

Karine Aigner / Blood engorged camel tick (Hyalomma dromedarii) with tracks in the sand dunes of Erg Chebbi, Merzouga, Morocco.

Pal Hermansen / Tick (Ixodida sp) on skin, a vector for Lyme Disease, Q Fever, and Tick-borne Encephalitis. Norway. May.

Guy Edwardes / Sheep tick (Ixodes ricinus) on blade of grass, Marshwood Vale, Dorset, England, UK, May.

Guy Edwardes / Sheep tick (Ixodes ricinus) on blade of grass, Marshwood Vale, Dorset, England, UK, May.

Ingo Arndt / Honey bee (Apis mellifera) infested with Honey bee mite (Varroa destructor), Germany

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage blisters on a pear leaf backlit, England, UK.

Nigel Cattlin / An adult female dog tick (Idoxes sp.) removed from its host on a plain background

Nigel Cattlin / Predatory mites (Amblyseius sp.) females and immatures preying on pest mites (Tetranychus sp.) on a leaf

Nick Upton / Lime nail / bugle galls caused by Gall mite (Eriophyes tiliae) on Lime tree leaves (Tilia sp.), Suffolk, UK, May.

Adrian Davies / Tick (Ixodes ricinus) removed from dog, swollen after feeding. Surrey, England, UK. May.

Nigel Cattlin / Russeting to apple fruit and bronzing to leaves by fruit tree red spider mite (Panonychus ulmi)

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves. Berkshire, England, UK. May.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves and young fruit. Berkshire, England, UK. May.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to young Pear (Pyrus sp) fruit. Berkshire, England, UK. June.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves. Berkshire, England, UK. June.

Nigel Cattlin / Two-spot spider mite (Tetranychus urticae) grazing damage to Tomato (Solanum lycopersicum) leaves. Cultivated in greenhouse, Berkshire, England, UK. September.

Nigel Cattlin / Corky brown damage to Pear (Pyrus communis) fruit possibly caused by early Eriophyid (Eriophyidae) blister mite infestation. Berkshire, England, UK. September.

Nigel Cattlin / Red spider mite (Panonychus ulmi) webbing on young Apple (Malus domestica) branch, damage to leaves.

Nigel Cattlin / European red mite (Panonychus ulmi) eggs overwintering on Apple (Malus domestica) wood.

Nigel Cattlin / European red mite (Panonychus ulmi) eggs overwintering on Apple (Malus domestica) wood.

Nigel Cattlin / European red mite (Panonychus ulmi) eggs overwintering on Apple (Malus domestica) wood.

Nigel Cattlin / Two spotted spider mite (Tetranychus urticae) webbing and damage to leaves of Green bean (Phaseolus vulgaris) plant. England, UK.