• Commonly called as ‘Silver fish’.

• Lives in houses behind pictures of wall, amidst books etc…

• Household pest.

• Silvery white in colour.

• Feeds on starched cloth and paste in book bindings.

• It is a primitive wing less insect.

• Body consists of head, thorax and abdomen.

• Head bears antennae, a pair of compound eye and biting mouth parts.

• Anal segment bears a pair of anal cerci and one median caudal filament.