There are 4000 species known till now and about 10% of them are more significant as pests which can cause serious damage to building structures, plantation and forests.
Silver fish are active in night and hide during day; silverfish prefer, cool moist and dark places with temperature ranging from 21-26 degree and prefer to live in humidity of 75-95%. Silver fish has a characteristic of quick movement.
Generally occasional invaders have two paired legs per body segment. These invaders are not poisonous but some species produce mild acid with the help of repugnatorial glands and these acids may produce allergic reaction for sensitive skin. These invaders
Larvae of moths have elongated body with a tuft of hair at the end of abdomen. Larvas of moths are in color of light brown to dark brown and of length of ½ inch.
Only female mosquitoes suck blood whereas male mosquitoes live by sucking nectar. These mosquitoes biting are transferring dreadfully disease like malaria and many people are affected round the world.