Introduction The larva of certain insects for use in their building webs, climbing ropes and cocoons riders Commercial silk industry: use larva of silkworm Application Mostly apparel, was also used for parachutesIntroduction The larva of certain insects for use in their building webs, climbing ropes and cocoons Spiders Commercial silk industry: use larva of silkworm Application: Mostly apparel, was also used for parachutes