The facts about spiders and their types

 

Spiders are air-breathing arthropods that have eight legs, and chelicerae with fangs that inject venom.

Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exception of air and sea colonization.

Spiders build webs made from silk produced in special glands. Spider webs vary widely in size, shape and the amount of sticky thread used. The silk thread are very thin, light and strong. spiders spin webs mainly to catch other insects as prey.

Silk is mainly composed of a protein very similar to that used in insect silk. It is initially a liquid, and hardens not by exposure to air but as a result of being drawn out, which changes the internal structure of the protein.

Different types of spider webs

  • Spiral orb webs
  • Tangle webs or cobwebs
  • Funnel webs
  • Tubular webs
  • Sheet webs
  • Dome or tent webs

Spiders occur in a large range of sizes. The smallest, Patu digua from Colombia, are less than 0.37 mm in body length. The largest and heaviest spiders occur among tarantulas, which can have body lengths up to 90 mm and leg spans up to 250 mm

Most spiders have four pairs of eyes

More types of spiders are listed below.

 

Wolf Spider

The wolf spider is a ground spider and do not make webs to catch prey.

Wolf spiders do not build webs so the females carry the egg sac on their hind end. They continue to carry the newly hatched on their back for the first few weeks of life.

There are many genera of wolf spider, ranging in body size from less than 1 to 30 millimetres. Carolina wolf spider is the largest species of wolf spiders, with a body that can be more than one inch long.

They have eight eyes arranged in three rows. The bottom row consists of four small eyes, the middle row has two very large eyes , and the top row has two medium-sized eyes.

There are many smaller wolf spiders. They live on pastures and fields and are an important natural control on harmful insects.

   

Jumping Spider

Jumping Spider is an active hunter and can over an amazing distance when jumping. It belongs to the largest group of spiders which is composed of more than 5000 known species

Jumping spider are brightly-colored and have unsually pattrened bodies. They grow to a length of less than two centimeters and females are larger than the males. Jumping spiders have stout bodies, four pairs of short and long legs and no antennae. They have four pairs of eyes arranged in rows.

Jumping spider feed on flower nectar or dead animals, depending on the species.

Jumping spiders live ina wide variety of habitats. Most species live in tropical forests, but some are also found in temperate forest, deserts, inter-tidal zones, mountains, rainforest and scrub lands.

Jumping spiders fasten silk threads when they move from one place to another.

Ant mimicking jumping spiders look like ants in shape and colour, they have a head, thorax and abdomen with long, slender legs, just like ants. Ant mimicking jumping spiders raise their front legs in the air to give the appearance of antennae. Thus these spiders trrick ants into becoming their prey. By mimicking ants they also protect themselves from birds, wasps and other predators who generally avoid eating ants.

Green jumping spider are large, beautiful spiders . the males are bright green and with a dark red head and white abdomen wth two dark lines.

Zebra spider is a tiny jumping spider with a black body and white hairs, forming zebra-like stripes.

Jumping Spider
 
Zebra Spider
 

Tarantula

Tarantulas are large, hairy spiders that get their names from Taranto a town in southern Italy. There are about 900 species identified. Tarantulas are hamless to human beings.their bites being slightly painful and contains mild venom.

All tarantulas can produce silk.

Tarantulas mainly eat insects and other arthropods, using ambush as their primary method of prey capture. The biggest tarantulas can kill animals as large as lizards, mice, and birds.

The largest species of tarantula can weigh over 85 grams. The largest of all, the Goliath Birdeater from Venezuela and Brazil, has been reported to have a weight of 150 grams and a leg-span of up to 30 centimetres. It is considered to be the second largest spider in the world by leg-span; second to the Giant huntsman spider

 

Solifuges

The solifuges also known as camel spiders, wind scorpions and sun spiders. The name Solifugae derives from Latin, and means "those that flee from the sun"

Solifugids are moderately small to large arachnids, with the larger species reaching 15 cm in length.The body is divided into a forward part, cephalothorax or prosoma, and a ten-segmented abdomen.

In some species there are very large central eyes their eyes are surprisingly sophisticated. They can recognise forms, and are used in hunting and avoiding enemies.

Solifugae are carnivorous or omnivorous, with most species feeding on termites, darkling beetles, and other small ground-dwelling arthropods. Solifuges are opportunistic feeders and have been recorded as feeding on snakes, small lizards and rodents

   

Orb-weaver spider

Orb-weaver spider are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields and forests. The orb-weavers include over 10,000 species and make up about 25% of spider diversity.

Orb-weavers have eight similar eyes, legs hairy or spiny and no stridulating organs.

Generally, orb-weaving spiders are three-clawed builders of flat webs with sticky spiral capture silk. Many orb-weavers build a new web each day. Generally, towards evening, the spider will consume the old web, rest for approximately an hour, then spin a new web in the same general location.

   

Bolas Spiders

Bolas Spiders are unusual orb-weaver spiders that do not spin the typical web. Instead, they hunt by using a sticky 'capture blob' of silk on the end of a line, known as a 'bolas'. By swinging the bolas at flying male moths or moth flies nearby, the spider may snag its prey rather like a fisherman snagging a fish on a hook. Because of this, they are also called angling spider or fishing spider

Bolas spiders are small nocturnal animals, females up to 15 mm, males about 2 mm with oddly 'lumpy' abdomens. Several species look like bird droppings, which enables them to rest unnoticed at day in fairly exposed places.

   
Mediterranean Black Widow Spider
Goldenrod Crab Spider
Huntsman Spider
Water Spider
 
Aysha Velox
Daddy Longlegs Spider
Black Wishbone Spider
Pelican Spider
 
Black Widow Spiders
Brown Widow Spider
Grass Cross Spider
Yellow Sac Spider