Bedbugs or Cimicidae is a small parasitic insect that feeds from human blood. Their number has been pretty much cut down in the late 1940s, but is becoming a larger problem again after 1995.
An adult bed bug is 4-5 mm long and about 1,5mm wide. They are mostly brown color and have no wings, while a baby bed bug is lighter in color and of course smaller.
View also other information about bed bugs on this blog
