SPIDERS FACTS AND INFORMATION

SPIDERS FACTS AND INFORMATION

 

NOMENCLATURE:

Kingdom: Animalia

Phylum: Arthropoda

Class: Arachnida

Order: Araneae

There are more than 45000 known species of spiders.

Cheiracanthium inclusum (yellow sac spider):

These are the light are light yellow to pale yellowish green and orange- brown stripe on the top of the abdomen.

The adult female size of the body is 1/4 - 3/8 inches long and its leg span is up to 1 inch, whereas the males are slenderer, with a slightly larger leg span.

These spiders do not build their nests. they take shelter in silk tubes during day and move to hunt during night. These are the active hunters.

VENOM: The yellow sac spiders have fangs that can penetrate the human skin easily. The venom has a toxin effect on the cells and the venom travels through the nerve tissue and can cause neurotoxin effects which in turn effects the brain and the spinal cord and can be fatal.

Latrodectus mactans (black widow spider):

The female spiders body size measures up to 1.5 inches whereas the male is half the size of female. The adult female spiders are shinny blank body with red hourglass shaped markings on the underside of their abdomen.

These spiders are mostly found in temperate regions through out the world. These spiders prefer dark and dry shelters.

The life span of these female spiders are 2-3 years whereas the life span of the male spiders are about 2-3 months.

VENOM: Research says that the venom of black widows are 15 times stronger than that of rattlesnakes. In humans, the bite causes headaches, nausea and cause difficult in breathing.

Funnel-web Spiders:

These spiders are medium sized spiders, 1-2 inches and are black or brown in color.

These spiders live in funnel or in burrows. they prefer humid climates, moist places.

VENOM: The venom of the male spider is very toxic. since this venom consists of a unique component ribotoxin.

Wolf spider:

These spiders have effective camouflage, that helps them to catch their preys and helps them to guard themselves.

These live-in grasslands, meadows, wetlands, and mountains.

Their body size measures 6.4mm - 3cm. Males are smaller compared to females.

these hunt during night. they have a keen eyesight, speedy movements and highly sensitive to vibrations.

VENOM: These are venomous for the prey and these venoms paralyze the prey. but they are slightly toxin to humans which may cause some itchy skin and redness at the site of bite but are non-fatal.

 

American House spider:

These are common house spider and are found all over the world. these spiders are not harmful for humans. Female spiders’ range in size from 3/16-5/16 whereas the male is smaller with range 1/8-3/16.

Long bodied spider:

These spiders have oval-shaped bodies and are pale yellowish to light brown or gray in color. Adult female long-bodied cellar spiders have a body length of about 7-8 mm with front legs about 45-50 mm long. Adult male long-bodied cellar spiders have a body length of about 6 mm.

 

 

Jumping Spider:

Jumping spiders don’t have special leg muscles, like grasshoppers, to help them leap. They propel themselves by suddenly changing the blood flow in their body.

Jumping spiders have four sets of eyes. There are two large eyes right in front, with a smaller eye on either side. Then, on the top of their heads, jumping spiders have two medium-sized eyes and two smaller eyes. the jumping spider doesn’t trap prey using a web.

Goliath birdeater:

 

COMMON NAME: Goliath Birdeater

SCIENTIFIC NAME: Theraphosa blondi

DIET: Carnivore

AVERAGE LIFE SPAN: Females, 20 years; males, 3 to 6 years

SIZE: Leg span up to 12 inches

WEIGHT: Up to 6 ounces

 

The Goliath birdeater is the king of spiders Weighing up to six ounces. Goliaths don’t usually eat birds, but they are big enough to be able to—and occasionally they do and hence known as birdeaters.

Goliath birdeaters have bad eyesight. They rely instead on modified leg hairs, sensitive to vibration, to warn them of danger.

Venom in these spiders are mild to humans, roughly equivalent to getting stung by a wasp. In fact, the venom will likely do less damage to humans than the goliath’s massive fangs.

It lives in the deep rain forests regions of northern South America, including Venezuela, northern Brazil, Guyana, French Guiana and Suriname, in silk-lined burrows and under rocks and roots.

- PUBLISHED BY DEVZZ