When you see a spider hanging from the ceiling of your house or crawling on your furniture, what’s your first reaction? Do you get scared easily because you think all spiders are creepy, dangerous, and poisonous? This article will help you understand spiders.
- Spiders are eight-legged arthropods with fangs used in releasing venom. Their bodies have three main parts: the head, abdomen and thorax.
- The head forms part the cephalothorax of a spider and includes its eyes and mouth and four pairs of legs.
- An exoskeleton serves as a rigid outer covering that protects the entire body of the spider.
- The abdomen of the spider is connected to the cephalothorax by a narrow pedicel.
- Sensory hairs grow from the skin of the spider’s body.
- Claws are found at the end of each spider leg. Each spider leg is segmented. Spiders who can build webs have three claws at the end of each leg. The muscles of the legs of the spiders are contractable and capable of generating a strong suction force during feeding of prey. Venom from the fangs are most of the time used in killing their prey.
Spiders are known to have lived everywhere or all over the world except in Antarctica. Tropical countries are home to many spider species since they can thrive in a humid climate and it is in these places where they can find a lot of food.
- Terrestrial spiders can be found in trees, in plants, inside or homes and even in the blades of grass in our backyard.
- There are also spider species while live in the edges of lakes and ponds where they can find lots of food and shelter.
- Spiders can also be seen in crawl spaces of our homes, behind the closet and even within a pile of bricks.
Role in Nature
Spiders can be useful in our homes and in our gardens since most of the food they eat are the usual household pests such as cockroaches, mosquitoes, aphids and grasshoppers. Their existence around and within your house is a natural way of solving your pest problems.
The venom possessed by spiders can also be used to cure different kinds of ailments such as arthritis, some heart ailments.
Spiders are also considered delicacies. In Cambodia, spiders are fried and is a good part of the diet of the locals. Eating spiders in Thailand and South America is believed to provide good luck.
Spiders help to control mosquitoes that can cause diseases such as malaria and dengue.
Some Spiders Are Dangerous
Some spiders are dangerous. Such varieties as the black widow, brown recluse and the yellow sac possess venom that can cause vomiting, chest pains and abdominal pain to bitten humans. Large populations of spiders at home are also bothersome to homeowners since a lot of people fear spiders. The best way to control spider population at home is to terminate their food source such as insects. Keeping your home clean and sanitary can also be a good solution since it also keeps their food source or insects away.