Stephen Dalton / Seven spot ladybird (Cocinella septempunctata) feeding on greenfly on rose bud, UK

Nigel Cattlin / Creeping thistle (Cirsium arvense) with chlorosis caused by PST bacteria (Pseudomonas syringae pv tagetis). Dorset, England, UK. October.

Nigel Cattlin / Creeping thistle (Cirsium arvense) with chlorosis caused by PST bacteria (Pseudomonas syringae pv tagetis). Dorset, England, UK. October.

Nigel Cattlin / Harvestman (Phalangium opilio) female on cultivated Blackberry (Rubus sp) fruit, this predator serves as a biological control species. Berkshire, England, UK. August.

Nigel Cattlin / Seven-spot ladybird (Coccinella septem-punctata) larva predating Black bean aphids (Aphis fabae) on Runner bean (Phaseolus coccineus). Bean with buds. Berkshire, England, UK. July.

Nigel Cattlin / Harlequin / Asian ladybird (Harmonia axyridis), larva Berkshire, England, UK.

Nigel Cattlin / Harlequin / Asian ladybird (Harmonia axyridis) larva with black spindle-thistle aphid prey (Aphis fabae cirsiiacanthoidis) Berkshire, June

Jean E. Roche / Mosquitofish (Gambusia affinis) female, introduced species to control mosquitos, Camargue, France, June. Biological pest control.

Nick Upton / Gorse spider mites (Tetranychus lintearius) massing outside silk tent covering Gorse bush (Ulex europaeus) ready to migrate to other bushes. These mites are spreading in the UK and are used for biolog...

Nick Upton / Gorse spider mites (Tetranychus lintearius) massing outside their silken tent shrouding a Gorse bush (Ulex europaeus) ready to migrate to other bushes. These mites are spreading in the UK and are used...

Nick Upton / Gorse spider mites (Tetranychus lintearius) emerging in large numbers from silk tent shrouding Gorse bush (Ulex europaeus) ready to migrate to other bushes. These mites are spreading in the UK and are...

Doug Wechsler / Cinnabar moth caterpillar (Tyria jacobaeae) on Tansy ragwort (Jacobaea vulgaris / Senecio jacobaea). Caterpillar is used for biological control of this poisonous weed. Nova Scotia, Canada