Nigel Cattlin / Mealy cabbage aphid (Brevicoryne brassicae) infestation on Brassica stem. Berkshire, England, UK. June.

Nigel Cattlin / Mealy cabbage aphid (Brevicoryne brassicae) infestation on Brassica stem. Berkshire, England, UK. June.

Nigel Cattlin / Mealy cabbage aphid (Brevicoryne brassicae) infestation on secondary host plant Hedge mustard (Alliaria petiolata). Berkshire, England, UK. June.

Dave Bevan / Cabbage aphids (Brevicoryne brassicae) on cabbage leaf, UK

Nigel Cattlin / Mealy cabbage aphids (Brevicoryne brassicae) one mummified by Parasitoid wasp (Diaeretiella rapae) with exit hole trap door, England, UK.

Nigel Cattlin / Parasitoid wasp (Diaeretiella rapae) female, ovipositig in a Mealy cabbage aphid (Brevicoryne brassicae), a pest of brassica crops, England, UK.

Nigel Cattlin / Mealy cabbage aphid / Cabbage aphid (Brevicoryne brassicae) infestation on an Oilseed rape (Brassica napus) stem and seed head, Berkshire, UK. June.

Nigel Cattlin / Seven-spot ladybird (Coccinella septempunctata) larva preying and feeding on Cabbage aphids (Brevicoryne brassicae) on Oilseed rape (Brassica napus), Berkshire, UK. May

Nigel Cattlin / Cabbage aphids (Brevicoryne brassicae) alate and immature nymphs on a cabbage leaf , Devon, July

Nigel Cattlin / Hoverfly (Syrphidae) puparium on a red cabbage leaf, larvae are important predators of aphid pests , Devon, England, UK. July.

Nigel Cattlin / Seven-spot ladybird beetle (Coccinella septempunctata) feeding on Cabbage aphids (Brevicoryne brassicae).