Stephen Dalton / Oriental cockroach (Blatta blatta) on dried pasta, UK

Kim Taylor / Oriental cockroach {Blatta orientalis} at night swarming over left over food.

Kim Taylor / Oriental cockroach {Blatta orientalis} at night swarming over food remains

Kim Taylor / Oriental Cockroaches (Blatta blatta) feed on sandwich

Heidi & Hans-Juergen Koch / Oriental Cockroach (Blatta orientalis) newborn with mother in background, native to Asia

Heidi & Hans-Juergen Koch / Oriental Cockroach (Blatta orientalis) nymphs emerging from eggs, native to Asia

Heidi & Hans-Juergen Koch / Oriental Cockroach (Blatta orientalis) egg capsule, which holds multiple eggs inside, native to Asia

Nigel Cattlin / Oriental cockroach (Blatta orientalis) gravid female with ootheca (egg case), household pest on food.