SPIDERS
Spider, Order Aranaea, counteracts harmful insects and other pests. Spiders aren't insects at all.
They are far more beneficial than they are dangerous and are in fact shy and harmless to humans.
Spiders are the considered by many to be the most important predators on insects, killing more than all other predators combined. Spiders in your home can be prevented by sealing off your living space from the crawlspace, garage and unfrequented storage space.
All spiders can and will bite if in danger or accidentally touched e.g. in shoes or clothing. Any spider bite can cause a reaction. Different people may react in different ways so it is best to be cautious around all spiders and look but do not touch any spider no matter how it is rated.
The spider will eat any insect that it can catch so it is not specific to any one prey like aphids, flies, gnats, caterpillars and other harmful insects.
Basically, there are two types of spiders:
Web Spinning Spiders
Orb Weaving Spiders- type of web that is spun or weaved.
1. St Andrew's Cross Spiders- is harmless to man..
2. Wraparound spiders- have broad, flat abdomens..
3. Golden Orb Weavers (Nephila edulis)- one of the largest spiders found in Australia..
4. Garden Orb Weaver - Araneus diadematus including over 2800 species in over 160 genera.The life span of these spiders is short, only lasting one season..
5. Golden Silk Orb Weaver - Nephila clavipes is the only species in the Nephila genus that exists in the USA. Also known as the golden silk spider..
6. Shamrock Orb Weaver - Araneus trifolium build beautiful, complex-looking webs all over the world..
7. Marbled Orb Weaver - Araneus marmoreus are known for their bright colors..
8. Black and Yellow Argiope - Argiope Aurantia has a short life span.
9. Banded Argiope- Argiope trifasciata build vertical orb webs and are active both day and night..
10.Silver Argiope- Argiope argentata found in tropical regions..
11.American House Spider - Achaearanea tepidariorum can be found during any season.
12.Jewel Spiders - Gasteracantha Minax also known as spiny orb weavers..
12.Spiny micrathena - Araneidae Micrathena sagittata males will not build webs after getting sexual maturity..
13.Green Lynx Spider - Peucetia viridans jump onto their prey in a catlike fashion.
14.Venusta Orchard Spider - Leucauge venusta live in Maine to Florida, west to Nebraska and Texas..
15.Nursery Web Spider - Family Pisauridae resemble the Wolf Spiders..
16.Southern House Spider - Kukulcania hibernalis males of this species are often mistaken for the brown recluse spider.
17.Daddy Long Legs -Pholcus phalangioides confuse with the long-legged Harvestmen.
18.Funnel Weaver Spider - Agelenopis species bites are not known to be very toxic to humans.
Hunting Spiders
1. Huntsman Spider - Heteropoda venatoria can run sideways as well as forwards..
2. Fishing Spiders - genus Dolomedes walk on the surface of water and dive beneath to feed on insects and even small fish..
3. Jumping Spider - Sitticus palustris bites people and causes only mild local pain..
4. Flower Spider - Thomisus spectabilis also known as the Crab Spider..
5. Tarantula - Genus Aphonopelma sometimes known as Bird Spiders or Monkey Spiders and will inject a paralyzing venom into their prey..
6. Camel Spider - Solfugids also known as Sun Spiders or Windscorpions reported as dangerous to the soldiers in Iraq.
DANGEROUS Web Spinning Spiders
Black Widow - Latrodectus mactans venomous bite of the Black Widow Spider, causes muscle spasms and breathing difficulty in humans and may be fatal.
Brown Widow - Lactrodectus geometricus is an introduced species in the United States and is found mainly in the tropical states. The Brown Widow Spider is one of the species with the infamous "red hourglass" marking on the underside of its abdomen.
DANGEROUS Hunting Spiders
Brown Recluse - Loxosceles reclusa- If the bite of a brown recluse spider is suspected, collect the spider and consult a physician immediately.
Hobo Spider - Tegenaria agrestis bites previously attributed to the Brown Recluse Spider are now thought to be caused by the Hobo Spider.
Wolf Spiders - Lyosidae, Genus Lycosa is named because it stalks its prey like a wild dog.
Yellow Sac Spider - Cheiracanthium inclusum generally produce instant and intense stinging pain.
Brazilian Wandering Spider - Phoneutria fera thought to be among the most venomous spiders known. Also is called the Banana Spider.
FYI General Information
Spiders are small, eight-legged creatures that are best known for spinning silk webs.
All spiders have fangs and most kinds have poison glands.
A spider's bite will kill insects and other small animals and a few kinds of spiders are harmful to human beings.
In North America, six kinds of spiders harm people, they are - the Brown Recluse, Sac, Black Widow, Brown Widow, Red-legged Widow and the Varied Widow.
Spiders are helpful to people because they eat harmful insects; like grasshoppers and locusts which destroy crops, eat flies and mosquitoes which carry diseases and even tadpoles, small frogs, small fish and mice.
Most females are larger and stronger and will eat the males.
They live anywhere like fields, woods, swamps, caves, deserts, underwater, near the top of mountains, houses, barns, on the outside of buildings, on walls, windscreens and corners of doors and windows.
Some tarantulas in captivity have lived for as long as 20 years.
Scientists classify spiders as arachnids, but most people think spiders are insects.
A spider has no bones and its skin serves as a protective outer skeleton.
The body has two main sections: the cephalothorax, which consists of the head joined to the chest; and the abdomen.
Hunting spiders have good eyesight and web-building spiders have poor eyesight, while cave spiders have no eyes at all.
They do not have chewing mouth parts and therefore eat only liquids.
The spider eats some of the solid tissue of its prey by predigesting it with digestive juices on the tissue and the powerful juices dissolve the tissue.
Most kinds of spiders have two to six spinnerets that are short, fingerlike organs with which the spider spins silk, some have another spinning organ called the cribellum.
Spider silk is made up of protein and forms in the spider's silk glands.
Spider silk cannot be dissolved in water and is the strongest natural fiber known.
Spiders have two kinds of breathing organs - tracheae and book lungs.
Spiders depend on silk in so many ways that they could not live without it.
They have many enemies including snakes, frogs, toads, lizards, birds, fish, and other animals.
Some insects eat spiders like the wasp which is one of the spider's worst enemies.
A spider called pirate spiders eats nothing but other spiders.
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