Nigel Cattlin / Black bean aphid (Aphis fabae) infestation on Runner bean (Phaseolus coccineus), stem twining up bamboo cane. Berkshire, England, UK. June.

Nigel Cattlin / Black bean aphid (Aphis fabae) infestation on flowering Broad bean (Vicia faba). Berkshire, England, UK. June.

Nigel Cattlin / Black bean aphid (Aphis fabae) infestation on Broad bean (Vicia faba) plant. Berkshire, England, UK. June.

Nigel Cattlin / Bird cherry-oat aphid (Rhopalosiphum padi) infestation on Wheat (Triticum aestivum) leaf with Barley yellow dwarf virus (BYDV) symptoms present.

Heather Angel / Honey bee (Apis mellifera) extending proboscis to nectar on Common rue (Ruta graveolens). Green aphid (Aphidoidea) beneath flower. Surrey, England, UK. July.

Nick Upton / Large knapweed aphid (Uroleucon jaceae) colony feeding on a Greater knapweed (Centaurea scabiosa) stem, Wiltshire, England, UK, June.

Nick Upton / Large knapweed aphid (Uroleucon jaceae) colony feeding on a Greater knapweed (Centaurea scabiosa) stem, Wiltshire, England, UK, June.

Rod Williams / Large thistle aphids (Uroleucon cirsii) Brockley Cemetery, Lewisham, London, England, UK. July.

Doug Wechsler / Brown lacewing (Hemerobiidae) larva feeding on Oleander Aphid (Aphis nerii) Philadelphia, USA, June.

Doug Wechsler / Brown lacewing (Micromus sp) larva eating Oleander aphid (Aphis nerii) on common milkweed, USA.

Doug Wechsler / Aphids (Myzocallis) on White oak leaf, Pennsylvania, Philadelphia, Pennsylavania, USA. May.

Doug Wechsler / Aphid (Myzocallis sp) giving birth, Fort Washington State Park, Montgomery County, Philadelphia, Pennsylvania, USA, October.