Tui De Roy / Takahe (Porphyrio hochstetteri) family in large breeding pen, Burwood Breeding Center, New Zealand

Michael Durham / Brown Rat (Rattus norvegicus) at waste water outlet, common pest species native to Europe, introduced worldwide

Michael Durham / Brown Rat (Rattus norvegicus) pair at waste water outlet, common pest species native to Europe, introduced worldwide

Michael Durham / Brown Rat (Rattus norvegicus) at waste water outlet, common pest species native to Europe, introduced worldwide

Michael Durham / Brown Rat (Rattus norvegicus) detail of incisor teeth, native to Europe, introduced worldwide

Michael Durham / Brown Rat (Rattus norvegicus) at waste water outlet, common pest species native to Europe, introduced worldwide

Michael Durham / Western Long-eared Myotis (Myotis evotis) bat, adult with ear mites, Deschutes National Forest, Oregon

Flip Nicklin / Feral Pig (Sus scrofa) captured by park wardens with Cattle Egrets, introduced species that disturbs natural vegetation, Cocos Island, Costa Rica

Flip de Nooyer / Clover Dodder (Cuscuta epithymum) perennial vine in bloom, native in Europe, introduced into North America where it is considered an invasive weed

Michael & Patricia Fogden / Brown Tree Snake (Boiga irregularis) sensing with tongue in the rainforest, introduced pest, Kuranda State Forest, Australia

Michael & Patricia Fogden / Brown Tree Snake (Boiga irregularis) in defensive display, sensing with tongue in the rainforest, Kuranda State Forest, Australia

Yva Momatiuk & John Eastcott / Nutria (Myocastor coypus) emerging from swamp, Lake Martin, Louisiana, native to South America and introduced to Europe, Asia and North America, considered an invasive pest in wetland areas

Yva Momatiuk & John Eastcott / Nutria (Myocastor coypus) emerging from swamp, Lake Martin, Louisiana, native to South America and introduced to Europe, Asia and North America, considered an invasive pest in wetland areas

Yva Momatiuk & John Eastcott / Nutria (Myocastor coypus) emerging from swamp, Lake Martin, Louisiana, native to South America and introduced to Europe, Asia and North America, considered an invasive pest in wetland areas

Yva Momatiuk & John Eastcott / Nutria (Myocastor coypus) emerging from swamp, Lake Martin, Louisiana, native to South America and introduced to Europe, Asia and North America, considered an invasive pest in wetland areas

Yva Momatiuk & John Eastcott / Spruce (Picea sp) trees killed by Spruce Bark Beetle, Kenai Peninsula, Alaska

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) in the shadow of a fork, worldwide distribution

Heidi & Hans-Juergen Koch / Blue Bottle Fly (Calliphora erythrocephala) feeding on Kiwi fruit showing compound eyes and mouth parts, worldwide distribution

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) sitting on an open bottle neck, worldwide distribution

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) with her freshly laid eggs, worldwide distribution

Heidi & Hans-Juergen Koch / Greenbottle Fly (Lucilia caesar) mass of newly hatched flies on cocoons, worldwide distribution

Heidi & Hans-Juergen Koch / Greenbottle Fly (Lucilia caesar) close-up of compound eye, worldwide distribution

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) on a folded newspaper, worldwide distribution

Heidi & Hans-Juergen Koch / Blue Bottle Fly (Calliphora erythrocephala) close-up portrait showing compound eyes and mouth parts, worldwide distribution

Heidi & Hans-Juergen Koch / Blue Bottle Fly (Calliphora erythrocephala) close-up portrait showing compound eye, worldwide distribution

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) pair mating, worldwide distribution

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) pair mating on a newspaper, worldwide distribution

Heidi & Hans-Juergen Koch / House Fly (Musca domestica) on a napkin, feeding on a drop of marmalade, worldwide distribution

Heidi & Hans-Juergen Koch / Blue Bottle Fly (Calliphora erythrocephala) newly hatched, still has forehead bubble and body is light and soft, worldwide distribution

Heidi & Hans-Juergen Koch / Greenbottle Fly (Lucilia caesar) mass of newly hatched flies, worldwide distribution

Mitsuaki Iwago / Common Brush-tailed Possum (Trichosurus vulpecula) introduced for fur is now the top pest which damages forests and kills birds, Australia

Asgeir Helgestad / Mosquito sucking blood from person. Norway

Doug Wechsler / Deer tick biting human flesh {Ixodes scapularis} Pennsylvania, USA

Peter Scoones / Blowfly on bread {Calliphoridae} UK

PREMAPHOTOS / Vine weevil larvae on Begonia corm (Otiorhynchus sulcatus) UK

Hanne & Jens Eriksen / Lily leaf beetle {Lilioceris lilii} Holstebro, Denmark

Duncan Mcewan / Seven spotted ladybird {Coccinella septempunctata} eating aphids. UK

Gerry Ellis / Brown Tree Snake (Boiga irregularis) species has been introduced to Guam and has become a pest, Northern Territory, Australia

Mark Moffett / Bark Beetle (Dendroctonus pseudotsugae) larvae with radiating galleries in Douglas Fir (Pseudotsuga menziesii) tree, Flat Creek, University of Idaho Forest, Idaho

Mark Moffett / Bark Beetle (Dendroctonus pseudotsugae) larvae with radiating galleries in Douglas Fir (Pseudotsuga menziesii) tree, University of Idaho Forest, Idaho

Mark Moffett / Colorado Potato Beetle (Leptinotarsa decemlineata) bio control by using Stink Bug that sucks larva dry, Bangor, Maine

Mark Moffett / Colorado Potato Beetle (Leptinotarsa decemlineata) pupae, Bangor, Maine

Norbert Wu / Brown Garden Snail (Helix aspersa) on rose petals covered with dew, California

Norbert Wu / Eastern Pocket Gopher (Geomys sp) showing teeth which are used to excavate burrows, North America

Tui De Roy / Common Brush-tailed Possum (Trichosurus vulpecula) introduced for fur is now top pest which damages forests and kills birds, Golden Bay, New Zealand

Mitsuhiko Imamori / Migratory Locust (Locusta migratoria) on edge of blade, close up, front view, Shiga, Japan

Mitsuhiko Imamori / Farmer spraying for Locust, South Africa

Mitsuhiko Imamori / Desert Locust (Schistocerca gregaria) group on bush, Africa

Mitsuhiko Imamori / Desert Locust (Schistocerca gregaria) group on thorn bush, Africa

Tui De Roy / Grand Devil's-claws (Pisonia grandis) rainforest vegetation killed by introduced Soft Scale Insect (Pulvinaria sp), Palmyra Atoll, US Line Islands, Oceania

Mark Moffett / Bark Beetle (Dendroctonus pseudotsugae) larvae riddles Fir trees with channels where larvae will mature, Flat Creek, Idaho

Mark Moffett / Metallic Wood-boring Beetle (Euchroma gigantea) portrait, El Yano Carti road, Panama

Mark Moffett / Leafcutter Ant (Atta vollenveideri) nests dot the landscape, lines radiating from the nest are the ants' trunk trails, Paraguay

Mark Moffett / Leafcutter Ant (Atta vollenveideri) decaying nests which play an important ecological role since palms and mesquites sprout from the fertile soil created by the nests, Paraguay

Mark Moffett / Leafcutter Ant (Acromyrmex octospinosus) retrieving artificial bait that kills their fungus gardens, bait is used by farmers to control this non-native pest, Guadaloupe

Mark Moffett / Silverfish living in Acacia thorns with Acacia Ants

Mark Moffett / Mexican Bean Beetle (Epilachna varivestis) considered pest by bean farmers

Mitsuhiko Imamori / Man with hands full of dead locusts, South Africa

Jeff Foott / Redwood National Park - Rhodedendron {R macrophyllum} and Douglas fir, California, USA

Elizabeth White / 1080 Poison - sign warning of poisaon baits, Whiteman PR, Western Australia

Jeff Rotman / Close up of spines and skin of Crown of Thorns starfish {Acanthaster planci} Red Sea.

George McCarthy / European mole emerging from hole in garden {Talpa europaea} UK

Barry Mansell / Hispid cotton rat {Sigmodon hispidus} US

Colin Seddon / Black rat on chain {Rattus rattus} captive

Duncan Mcewan / Trapped European moles hanging on wire fence {Talpa europaea}, Ayrshire, Scotland, UK

John Cancalosi / Black rat {Rattus rattus} feeding on cactus blossoms, introduced pest, Antigua, W Ind.

WILLIAM OSBORN / Magpies caught in Larson trap under licence, Wiltshire, UK.

Nick Garbutt / Water hyacinth plants (introduced species) and Baobab trees in distance, Western Madagascar

Daniel Gomez / Ruddy headed geese {Chloephaga rubidiceps} Slimbridge WWT, UK endangered in Argentina, affected by the expansion of agriculture in the Pampas; hunted as a pest of cereal crops

Nigel Bean / Brown rat feeds on seed dropped from bird feeder {Rattus norvegicus} UK

John Cancalosi / Feral goat {Capra hircus}, an introduced pest, Redonda Island Antigua, West Indies (Domestic goat gone wild)

Ingo Arndt / Norway Spruce (Picea abies) trees that have died after being afflicted by bark beetle, Bayrischer Wald National Park, Germany

Paul D Stewart / Illustration of extinct Thylacine / Tasmanian Tiger (Thylacinus cyanocephalus) engraved by W. Lizars. From Jardine's series 'The Naturalist's Library; Mammalia' 1841 ('The Natural History of Marsupial...

Paul D Stewart / Illustration of the extinct Falkland Island Wolf or Fox (Dusicyon australis). Hand coloured lithograph, Plate IV, The Zoology of the Voyage of H.M.S. Beagle, edited and superintended by Charles Darwin...

Nick Upton / Young American slipper limpet (Crepidula fornicata) an invasive pest of oyster beds in Europe, attached to a boulder found low on a rocky shore, near Falmouth, Cornwall, UK, August.

Nick Upton / Young American slipper Limpet (Crepidula fornicata) an invasive pest of oyster beds in Europe, attached to a boulder in a rockpool, near Falmouth, Cornwall, UK, August.

Nick Upton / European oyster drill / Sting winkle (Ocenebra erinacea) a pest of oyster beds, on the move over rocks very low on the shore, near Falmouth, Cornwall, UK, August.

Nick Upton / European oyster drill / Sting winkle (Ocenebra erinacea) a pest of oyster beds, on the move over Coralweed (Corallina officinalis) in a low shore rockpool, near Falmouth, Cornwall, UK, August.

Ingo Arndt / Ingo Arndt and team rat for South Georgia Heritage Trust Rat Eradication Project, Grytviken, South Georgia Island

Ingo Arndt / Helicopter pilot Peter Garden with his helicopter for South Georgia Heritage Trust Rat Eradication Project, Grytviken, South Georgia Island

Ingo Arndt / Helicopter flying with bait bucket for South Georgia Heritage Trust Rat Eradication Project, South Georgia Island

Ingo Arndt / Brown Rat (Rattus norvegicus) trail at whaling station, Grytviken, South Georgia Island

Ingo Arndt / Helicopter bucket being filled with bait for South Georgia Heritage Trust Rat Eradication Project, Grytviken, South Georgia Island

Ingo Arndt / Helicopter flying with bait bucket for South Georgia Heritage Trust Rat Eradication Project, Grytviken, South Georgia Island

Ingo Arndt / Project coordinator Tony Martin for South Georgia Heritage Trust Rat Eradication Project, South Georgia Island

Ingo Arndt / Brown Rat (Rattus norvegicus) tail samples for DNA testing for South Georgia Heritage Trust Rat Eradication Project, King Edward Point, South Georgia Island

Ingo Arndt / George Lemann checking locations for hand baiting at whaling station for South Georgia Heritage Trust Rat Eradication Project, South Georgia Island

Ingo Arndt / People checking vegetables in bio-security room at King Edward Point for South Georgia Heritage Trust Rat Eradication Project, South Georgia Island

Ernie Janes / Garden scarecrow in vegetable garden, Norfolk, UK

Colin Monteath / Pest control warning sign, New Zealand

Tui De Roy / Barn Owl (Tyto alba) with introduced mouse prey, Galapagos Islands, Ecuador

Michael Durham / True Bug, an ectoparasite feeding on part of the wing of a Big Brown Bat (Eptesicus fuscus)

Premaphotos / Differential grasshopper (Melanoplus differentialis) can be a pest and is also the intermediate host to parasitic worms of poultry, New Jersey, USA

Premaphotos / Differential grasshopper (Melanoplus differentialis) on rainforest edge. Can be a pest and is also the intermediate host to parasitic worms of poultry, Mexico

Piotr Naskrecki / Harlequin Beetle (Acrocinus longimanus) with mites hanging on to be able to move to different places in a behavior called phoresy, Acarai Mountains, Guyana

Piotr Naskrecki / Coconut Crab (Birgus latro) with an abundance of insect parasites, parasitic flies can attack terrestrial crustaceans as shown by these fly pupae, Solomon Islands

Mark Moffett / Convergent Lady Beetle (Hippodamia convergens) eating eggs of a Colorado Potato Beetle (Leptinotarsa decemlineata) as part of national pest control program