David Fleetham / Slender spongegoby (Phyllogobius platycephalops) and two Crabs of different species on Sponge. Several parasites with egg cases on the side of the Goby. Philippines.

Simon Colmer / Painted lady butterfly larva (Vanessa cardui)parasitised by Braconid wasp or Tabanid fly larva. (Remnants of caterpillar skin have fallen off leaf) Sussex, UK

Fabio Liverani / A butterfly that has been parasitised by a fungus, Tambopata National Reserve, Amazonia, Peru

Dave Bevan / Large white / Cabbage white butterfly {Pieris brassicae} caterpillar parasitised by ichneumon fly, Carmarthenshire, Wales, UK.

Kim Taylor / Emperor moth cocoon cut away showing pupa parasitised by dipteran flies, UK.

Kim Taylor / Mason bee {Osmia rufa} nest in glass tube, one cell parasitised by fly larvae, UK. Captive.

Kim Taylor / Large white / Cabbage white butterfly caterpillars parasitised by wasp {Aplanteles glomeratus} UK.

PREMAPHOTOS / Golden silk spider (Nephila clavipes) with larva of parasitic wasp attached to abdomen. Argentina, South America

PREMAPHOTOS / Pupae of parasitic wasp {Braconidae family} on dying caterpillar host, Trinidad

Mark Payne-Gill / Song sparrow nest {Zonotrichia melodia} parasitised with 5 Cowbird eggs {Molothrus ater}

Nigel Cattlin / Parasitoid wasps hatched in damage created by Asian rice gall midge (Orseolia oryzae), in a Rice (Oryza sativa) stem, Thailand

Nigel Cattlin / Mummified Pea aphid (Acyrthosiphon pisum) parasitised by a Parasitoid wasp (Aphidius ervi) next to a healthy adult aphid on leaf, England, UK.

Nigel Cattlin / Glasshouse whitefly scales (Trialeurodes vaporariorum) and pupae parasitised by Parasitoid wasp (Eretmocerus eremicus), a biological pest control, England, UK.

Nigel Cattlin / Parasitoid wasp (Eretmocerus eremicus) among parasitised Glasshouse whitefly scales (Trialeurodes vaporariorum) and pupae, a biological pest control, England, UK.

Nigel Cattlin / Parasitoid wasp (Diglyphus isaea) pupa, in a leaf mine after it has parasitised a Leafminer larva, used as biological pest control, England, UK.

Nigel Cattlin / Potato aphids (Macrosiphum euphorbiae) one (black), parasitised by parasitoid wasp (Aphelinus abdominalis) alongside two healthy aphids, England, UK.

Nigel Cattlin / Parasitoid wasp (Aphelinus abdominalis) with healthy and parasitised (black) Potato aphids (Macrosiphum euphorbiae), England, UK.

Nigel Cattlin / Glasshouse whitefly (Trialeurodes vaporariorum) larvae, black larvae have been parasitised by Parasitoid wasp (Encarsia formosa), used as biological pest control in protected crops. England, UK.

Nigel Cattlin / Cotton aphids (Aphis gossypii) with several parasitised and mummified by Parasitoid wasp (Aphidius spp.) and some with exit holes of adult wasps, England, UK.

Nigel Cattlin / Glasshouse whitefly (Trialeurodes vaporariorum) black larvae have been parasitised by Parasitoid wasp (Encarsia formosa), used as biological pest control in protected crops. England, UK.

Nigel Cattlin / Cotton aphids (Aphis gossypii) on a leaf, with several parasitised and mummified by Parasitoid wasp (Aphidius spp.) and some with exit holes of adult wasps, England, UK.

Nigel Cattlin / Parasitoid wasp (Cotesia glomerata) pupa cocoons from larvae emerging from a parasitised White butterfly caterpillar (Pieris sp.), England, UK.

Nigel Cattlin / Parasitoid wasp (Cotesia glomerata) larvae emerging from a parasitised Cabbage white butterfly (Pieris rapae) caterpillar to pupate, England, UK.

Nigel Cattlin / Parasitoid wasp (Cotesia glomerata) larvae emerging from a parasitised Cabbage white butterfly (Pieris rapae) caterpillar to pupate, England, UK.

Nigel Cattlin / Parasitoid wasp (Encarsia formosa) with parasitised Glasshouse whitefly (Trialeurodes vaporariorum) scales on a leaf, England, UK.

Nigel Cattlin / Glasshouse whitefly (Trialeurodes vaporariorum) black pupae parasitised by a Parasitoid wasp (Encarsia formosa) used in biological control of pests, England, UK.

Nigel Cattlin / Parasitoid wasp (Encarsia formosa) among parasitised Glasshouse whitefly (Trialeurodes vaporariorum) scales and pupae, some hatched, on a leaf, England, UK.

Nigel Cattlin / Rose grain aphid (Metopolophium dirhodum) parasitised and mummified by a Parasitoid wasp (Aphidius spp.) larva, England, UK.

Nigel Cattlin / Parasitoid wasp (Praon spp.) cocoon under parasitised Aphid (Aphidoidea), parasite used for biological pest control in protected crops.

Enrique Lopez-Tapia / Yartsagumbu (Cordyceps sinensis) or Caterpillar fungus in English, known as Himalayan gold, sold dried with its parasitised caterpillar of Ghost moth (Hepialus humuli), which has high monetary value i...

Maxime Aliaga / Tarantula hawk wasp (Pepsis sp) (Pompilidae) attacking a Tarantula (Theraphosidae), the spider is then paralysed and parasitised by the wasp's eggs, Peru.

Robin Chittenden / Common amber snail (Succinea putris) parasitised by Green-banded broodsac (Leucochloridium paradoxum). Norfolk, England, UK. September.

Nigel Cattlin / Pea aphid (Acyrthosiphon pisum) a severe aphid infestation on a pea crop but naturally heavily parasitized by Aphidius wasps

Nigel Cattlin / Pea aphid (Acyrthosiphon pisum) a severe aphid infestation on a pea crop but naturally heavily parasitized by Aphidius wasps

Nigel Cattlin / Larval scales of Cabbage whitefly (Aleyrodes proletella) parasitised by a parasitoiid wasp (Encarsia tricolor) for commercial biological pest control