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Bed Bug Species - Cimex Lectularius

Bed bugs (Cimex Lectularius) are native to the UK and Europe, and after WWII it was believed that up to 30% of all homes in the UK were infested with this parasite.shouldn’t be confused with dust mites.  Find out more about their appearance and lifecycle below.

Bed Bugs

(Cimex Lectularius)

Bed bugs species (Cimex Lectularius) are native to the UK and Europe


  • Bed bugs are around 4 to 5mm long.
  • Oval and flattened from back to underside with thick, well-developed legs.  Bed bugs do not have wings.
  • Their mouths are pointed for piercing and sucking.
  • Adult bed bugs are red to brown in colour.
  • Eggs are whitish cream, getting darker as they hatch to larvae.
  • Their shed skins are lighter brown and look like flaky exoskeletons.
Life cycle and habits of Bed Bugs


  • Bed bugs lay 200 – 500 eggs over a 2 month period in batches of 10 to 50.
  • The eggs are attached to items of furniture or fittings in clusters by a transparent substance
  • There are 5 stages to the lifecycle from egg to fully grown adult which can be from 6 to 10 months
  • The typical life span of a bed bug is about 10 months.
  • They can survive for weeks to months without feeding.


  • Bedbugs feed on human blood and are attracted to body heat and CO2 from sleeping humans
  • They inject an anaesthetic when they pierce the skin, so the bite can go unnoticed at first
  • They are found in cracks and crevices, headboards, behind peeling wallpaper, broken plaster, light switches, under carpets and skirting boards etc. so they are near to people for feeding
  • Bed bugs are nocturnal and start feeding soon after sunset and before dawn
  • Bed bugs will feed during the day if conditions are favourable
  • When alarmed they move quickly and emit an odour