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.