Nigel Cattlin / German cockroach (Blatella germanica) on diced Carrot.

MYN / Lily Kumpe / Black cockroach (Polyzosteriinae) Torndirrup National Park, Western Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Bush cockroach (Platyzosteria sp) William Bay National Park, Western Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Edgar's trilobite cockroach (Laxta rieki) composite showing different angles, William Bay National Park, Western Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Red-legged litter runner cockroach (Platyzosteria similis) William Bay National Park, Western Australia. Meetyourneighbours.net project.

MYN / Joao P. Burini / Parahormetica cockroach, Tapirai, Sao Paulo, Brazil. Atlantic forest. Meetyourneighbours.net project.

Emanuele Biggi / Jewel wasp (Ampulex compressa) stinging Cockroach prey (Periplaneta americana) with venom which will make the cockroach sluggish before leading it to nest to as host for its larvae. Captive.

Emanuele Biggi / Jewel wasp (Ampulex compressa) stinging Cockroach prey (Periplaneta americana) with venom which will make the cockroach sluggish before leading it to nest to as host for its larvae. Captive.

Emanuele Biggi / Cockroaches (Periplaneta australasiae) on handrail, Gomantong caves, Borneo, Sabah, Malaysia.

Emanuele Biggi / Cockroaches (Periplaneta australasiae), Gomantong caves, Borneo, Sabah, Malaysia.

Emanuele Biggi / Wrinkle-lipped free-tailed bat (Chaerephon plicatus) pup and a cockroach (Periplaneta australasiae) on the cave floor. The young bat had fallen from the cave ceiling. Gomantong caves, Borneo, Sabah, M...

Emanuele Biggi / Wrinkle-lipped free-tailed bat (Chaerephon plicatus) pup and a cockroach (Periplaneta australasiae) on the cave floor. The young bat had fallen from the cave ceiling. Gomantong caves, Borneo, Sabah, M...

Emanuele Biggi / Cockroach species, including Pycnoscelus indicus eating another dead cockroach (Periplaneta americana). Gomantong cave, Borneo, Sabah, Malaysia.

Emanuele Biggi / Cockroaches (Periplaneta australasiae) on wall of Gomantong caves, Borneo, Sabah, Malaysia.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) leading American cockroach (Periplaneta americana) prey to nest by antennae. Captive.

James Dunbar / American cockroach (Periplaneta americana) grooming

Chris Mattison / Orange-spotted cockroach (Blaptica dubia) on white background, occurs in Central and South America.

Ammonite / Close-up of an American cockroach (Periplaneta americana) eating from a slice of pizza. Controlled conditions.

Ammonite / Close-up of an American cockroach (Periplaneta americana) eating from a slice of pizza. Controlled conditions.

Ammonite / Close-up of an American cockroach (Periplaneta americana) grooming itself after feeding from a slice of pizza. Controlled conditions.

Ammonite / Close-up of an American cockroach (Periplaneta americana) grooming itself after feeding from a slice of pizza. Controlled conditions.

Christophe Courteau / Cockroaches (Periplaneta americana) on wall of Gomantong Cave. Sabah, Borneo. Malaysia.

Christophe Courteau / Cockroaches (Periplaneta americana) feeding on a dead chick of Black-nest swiftlet (Aerodramus maximus) which fell from its nest in Gomantong Cave. Sabah State. Borneo. Malaysia.

Adrian Davies / American cockroaches (Periplaneta americana) on wall of cave, Gomantong Cave, Sabah, Borneo

Aflo / Smokybrown cockroach (Periplaneta fuliginosa) on white backgruond, Japan.

MYN / Gil Wizen / Peppered cockroach (Archimandrita tesselata), Toledo District, Belize, August. meetyourneighbours.net project

MYN / Gil Wizen / Banana cockroach (Panchlora sp), Toledo District, Belize, August. meetyourneighbours.net project

MYN / Gil Wizen / Death's head cockroach (Blaberus craniifer), Toledo District, Belize, August. meetyourneighbours.net project

MYN / Lily Kumpe / Bush cockroach (Ellipsidion humerale) nymph, Western Australia. meetyourneighbours.net project

MYN / Lily Kumpe / Bush cockroach (Ellipsidion humerale), Western Australia. meetyourneighbours.net project

MYN / Lily Kumpe / Bush Cockroach (Platyzosteria sp) Plutonic Gold Mine, Meekatharra Shire, Gascoyne Bioregion, Western Australia. Meetyourneighbtous.net project

MYN / Lily Kumpe / Bush Cockroach (Platyzosteria sp) Plutonic Gold Mine, Meekatharra Shire, Gascoyne Bioregion, Western Australia. Meetyourneighbtous.net project

Doug Wechsler / Wood Cockroach (Parcoblatta) in rotten log, Wissahickon, Fairmount Park, Philadelphia, Pennsylvania, USA, December.

MYN / Andrew Snyder / American Cockroach nymph (Periplaneta americana) Owings Mills, Maryland, USA, June. Meetyourneighbours.net project

MYN / Andrew Snyder / American Cockroach nymph (Periplaneta americana) Owings Mills, Maryland, USA, June. Meetyourneighbours.net project

MYN / JP Lawrence / Unidentified Wood Roach Oxford, Mississippi, USA, April. Meetyourneighbours.net project

MYN / Dirk Funhoff / Cockroach (Ectobius sp.) Trassenwald, Ludwigshafen, Germany, November. Meetyourneighbours.net project

Kim Taylor / Tawny Cockroach (Ectobius pallidus) female with egg sac / ootheca, against white background, Surrey, England

Chris Mattison / Question-mark cockroach (Therea olegrandjeani). Endemic to India.

Piotr Naskrecki / Aquatic Cockroach (Blattaria sp) newly discovered unnamed species, with Damselfly nymph in stream, Braulio Carrillo National Park, Costa Rica

Robert Valentic / Australian Cockroach, species unknown. 25mm long. Kalbarri, Western Australia

GEORGETTE DOUWMA / Cockroaches on cave wall, showing different stages of larvae and nymphs, with at the top of the picture a fully developed cockroach. Gomontong cave, Sabah, Malaysia.

Kim Taylor / Giant forest cockroach (unidentified) Trinidad, captive

Kim Taylor / Giant Cockroach (unidentified), cut-out, Trinida

Mark Taylor / Cockroach (unidentified) Borneo. Captive

Bruce Thomson / Beautiful Northern wingless cockroach (Cosmozosteria gloriosa) portrait, Cooktown, Queensland, Australia.

Nick Upton / Lesser cockroach (Ectobius panzeri) nymph climbing up a sandy slope in heathland, Dorset, UK, August.

Robert Pickett / Local man looking at Giant Madagascar hissing cockroach, (Gromphadorina portentosa), on tree trunk, Reniala Nature Reserve, Ifaty, Madagascar

Steve Nicholls / Moth mullein (Verbascum blattaria) UK, July.

James Dunbar / Jewel wasp (Ampulex compressa) pulling American cockroach (Periplaneta americana) into a hole

James Dunbar / Focus pull from American cockroach (Periplaneta americana) to Jewel wasp (Ampulex compressa)

James Dunbar / Jewel wasp (Ampulex compressa) tasting the hemolymph from a American cockroach (Periplaneta americana) to gauge the amount of venom with which to sting the cockroach.

James Dunbar / Jewel wasp (Ampulex compressa) tasting the hemolymph from an American cockroach (Periplaneta americana) to gauge the amount of venom with which to sting the cockroach.

James Dunbar / Jewel wasp (Ampulex compressa) tasting the hemolymph from an American cockroach (Periplaneta americana) antennae to gauge the amount of venom with which to sting the cockroach.

James Dunbar / Jewel wasp (Ampulex compressa) stinging an American cockroach (Periplaneta americana) in its brain to deliver venom which makes the cockroach sluggish and prevents its normal escape response.

James Dunbar / Jewel wasp (Ampulex compressa) stinging an American cockroach (Periplaneta americana) in its brain to deliver venom which makes the cockroach sluggish and prevents its normal escape response.

James Dunbar / Jewel wasp (Ampulex compressa) pulling an American cockroach (Periplaneta americana) into nest hole.

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to nest hole by its antennae.

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to its nest hole by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to its nest hole by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to its nest hole by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to its nest hole by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to its nest hole by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) laying an egg on an American cockroach (Periplaneta americana) in nest hole.

James Dunbar / Jewel wasp (Ampulex compressa) laying an egg on an American cockroach (Periplaneta americana).

James Dunbar / Jewel wasp (Ampulex compressa) grooming, with American cockroach (Periplaneta americana)

James Dunbar / Jewel wasp (Ampulex compressa) biting an American cockroaches (Periplaneta americana) antennae off.

James Dunbar / Jewel wasp (Ampulex compressa) biting a American cockroaches (Periplaneta americana) antennae off

James Dunbar / Jewel wasp (Ampulex compressa) biting an American cockroaches (Periplaneta americana) antennae off

James Dunbar / Jewel wasp (Ampulex compressa) biting an American cockroaches (Periplaneta americana) antennae off

James Dunbar / Jewel wasp (Ampulex compressa) trying to bite an American cockroach's (Periplaneta americana) antennae off.

James Dunbar / Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) by its antennae

James Dunbar / Jewel wasp (Ampulex compressa) approaching American cockroach (Periplaneta americana)

James Dunbar / Jewel wasp (Ampulex compressa) approaching American cockroach (Periplaneta americana) which is grooming itself

James Dunbar / Jewel wasp (Ampulex compressa) approaching American cockroach (Periplaneta americana) which is grooming itself.

James Dunbar / Jewel wasp (Ampulex compressa) approaching American cockroach (Periplaneta americana)

James Dunbar / Jewel wasp (Ampulex compressa) and American cockroach (Periplaneta americana) face to face grooming. Very close up

James Dunbar / Jewel wasp (Ampulex compressa) pulling the antennae of an American cockroach (Periplaneta americana). Captive.

James Dunbar / Jewel wasp (Ampulex compressa) stinging an American cockroach (Periplaneta americana) in order to paralyse it. Captive.

James Dunbar / Wide angle shot of a Jewel wasp (Ampulex compressa) leading a stung American cockroach (Periplaneta americana) to its nest. Captive.

James Dunbar / Close up shot of a Jewel wasp (Ampulex compressa) leading an American cockroach (Periplaneta americana) by the antennae. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) starting to seal an American cockroach (Periplaneta americana) into its nest. Captive.

James Dunbar / Jewel wasp (Ampulex compressa) biting off the antennae of an American cockroach (Periplaneta americana). Captive.

James Dunbar / Jewel wasp (Ampulex compressa) laying an egg on an American cockroach (Periplaneta americana). Captive.