Facts About Spiders
How do spiders differ from insects?
Spiders have two body parts, eight legs, chelicerae or fangs, pedipalps, no wings or antennae. Insects have three body parts, six legs, mandibles, wings, and antennae.
What traits are typical of spiders?
Production of spider silk, pedipalps used in mating, venom, and external digestion.
How long do spiders live?
Most spiders live for 1 to 2 years. Tarantulas and trapdoor spiders live for 6 to 20 years. In temperate regions, spiders overwinter as eggs or adults.
What do spiders eat?
All spiders are predators. They do not eat plants, but only other living animals. Insects, spiders, invertebrates, some small vertebrates are the typical prey items.
How do they eat?
Spiders use venom to kill or paralyze their prey. Venom is transported through a duct in the fangs. Digestive enzymes are regurgitated to liquefy prey externally. No solid food is eaten. Prey may be crushed by the chelicerae or wrapped.
How do they grow?
The exoskeleton (external skeleton) of the spider must be shed or molted. Molting is necessary for growth, but a risky part of a spider's life as it leaves him vulnerable to other spiders.
Where are spiders found?
Everywhere but in oceans and Antarctica. They are common in gardens.
How does silk work?
Silk is extremely strong and flexible. Webs are enlargements of the spider's sensory system. Webs slow down and entangle prey. Orb webs are designed to capture prey with little silk, and translate the force of a flying insect throughout the web so it does not bounce out.
How do spiders reproduce?
Carefully! Females will sometimes eat the male. The male's anatomy and courtship behavior are adapted to surviving mating.
Truly a wonderful post . Such beautiful photos, sharpness, color, contrast, excellent MACRO capture!
ps. After this series I am no longer hungry, a great post for a diet! :))