Virtual Microscope


  • Oval
  • Wingless insects
  • Approximately 5-7 mm in length
  • Dorso-ventrally flattened
  • Short head
  • Prominent pair of eyes
  • Both males and females feed on the blood of sleeping individuals

There are two important species:

  1. Cimex lectularius (found in both tropical and non-tropical regions)
  2. Cimex hemipterus (primarily found in tropical regions)

Life cycle

  • Insect: Three part body (head/thorax /abdomen) and 6 legs
  • Dorso-ventrally flattened, size 6 mm
  • Wingless
  • Rostrum („beak“ or stylet) is crossed underneath 
  • They undergo hemimetabolous development
  • 5 nymphal stages
  • One cycle lasts for 6-10 weeks
  • Are considered "household pests"
  • In laboratory conditions, adult individuals can survive for up to 4 years
  • They can spread in furniture, etc. 
  • All stages are blood feeder


  • Not important vectors but annoying, infestations are increasing in many areas
  • Nuisance (allergic reaction possible)