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| Spider identification of venomous and dangerous spiders most
commonly found in homes, their habitat areas, venom toxicity and spider
bite first aid procedures. |
| Funnel-Web Spiders...deadly and aggressive
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FEMALE

MALE
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Venom toxicity - the Sydney Funnel-Web Spider is one of the world's
most deadly spiders. Both the male and female carry atraxotoxin, one
of the world's most dangerous toxins. The Blue Mountains Funnel-Web
and Northern Tree Funnel-Web Spiders are also highly venomous.
Danger time
- the mature male funnel-web spider will wander around during hot
humid nights, looking for a mate, and is known to enter homes,
footwear, clothing, washing and swimming pools where they can
survive several days under water. It is highly aggressive when
disturbed or cornered and is able to inflict multiple bites, with
its "flick-knife" hardened fangs.
People also
find funnel-web spiders wandering around the garden or in the home
after heavy rain or nearby earthworks. An anti-venom is available in
most major hospitals and ambulance vehicles in "funnel-web country".
First aid and medical attention (ambulance) should be sought as soon
as possible, if bitten.
Spider
Identification - an adult male 25 mm - female 30 mm in body length -
shiny black in colour with a dark purplish brown abdomen- reddish
hairs. Unique attributes include it's long spinnerets, that is , the
2 appendages on the end of the abdomen and the male has a spur on 2
of it's legs - refer to illustration on left.
Area of
distribution - the Sydney Funnel-Web Spider is a ground dweller in
moist soil areas along much of the eastern coastal area of New South
Wales and Victoria.
The Blue
Mountains Funnel-Web Spider is found mainly in the Blue Mountains
area, as far west as the Bathurst - Orange region and occasionally
in the Sydney basin.
The
Northern Tree Funnel-Web Spider is found in south-eastern Queensland
and northern New South Wales as far south as the Hunter Valley
region.
CLICK HERE for more info on Funnel-Web Spiders
CLICK HERE - FIRST AID - Funnel-Web Spider
Bite
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| Red-Back Spiders...highly venomous - can be
deadly |
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Venom toxicity - the Red-Back Spider can inflict a painful bite
which can be fatal, especially to the young and elderly. An
effective anti-venom was developed in 1956. About 250 people receive
the anti-venom each year.
Only a
small amount of venom can cause serious illness, as the poison
attacks the nervous system. Systemic envenomisation usually results
in headache, nausea, vomiting, abdominal pain, pyrexia, hypertension
and in severe cases, paralysis.
The pain
around the bite area can be excruciating. First aid and medical
attention (ambulance) should be sought as soon as possible, if
bitten.
Area of
distribution - Australia-wide.
Spider
Identification - size varies greatly - the male can be tiny, with
the abdomen of the female growing to the size of a large pea.
Red-Back Spiders do NOT always have a "red" marking.
Habitat -
prefers dry habitats - often found in out-houses, letter boxes,
undersides of seats, in rubbish, such as empty cans, in the sub
floor and other dark areas. Electric lights attract their prey -
moths, flies, mosquitoes and other insects.
CLICK HERE for more info on Red-Back Spiders
CLICK HERE - FIRST AID - Red-Back Spider Bite
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| White-tail Spiders: venomous - dangerous?
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Venom toxicity - the bite of a white-tail spider may cause nausea
and burning pain followed by swelling and itchiness around the site
of the bite.
In some
rare but dramatic cases, a severe allergic reaction, blistering or
ulceration of the skin, similar to gangrene, has been reported in
the media and linked to the bite of a white-tail spider.
However,
this cause/effect relationship has not been proven conclusively to
the satisfaction of some scientific researchers. Bacterial infection
of the wound caused by Mycobacterium ulcerans carried on the
fangs of the white-tail spider, may be a contributory factor.
In any
case, first aid and medical attention should be sought, if bitten,
as and when any adverse health effects are observed.
Area of
distribution - Australia-wide.
Spider
Identification - adult size varies 12 to 20 mm in body length - grey
to black in colour with a white section on the end of it's tail - as
illustrated.
Habitat -
prefers cool moist location - commonly found in garden mulch areas.
In summer, it often wanders into buildings, particularly bathrooms,
to escape the heat.
CLICK HERE for more info on White-Tail Spiders
CLICK HERE - FIRST AID - White Tail Spider
Bite
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| Mouse Spiders...venomous - painful bite
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FEMALE

MALE
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Venom toxicity - known to cause severe illness, especially to young
children - similar to Red-Back Spider. Although normally not
aggressive, the male mouse spider will bite if provoked, and should
be considered dangerous to humans. It has large hard fangs which can
cause a deep painful bite. First aid and medical attention
(ambulance) should be sought as soon as possible.
Area of distribution - Australia-wide.
Spider Identification - a medium to large spider of up to 35 mm in
body length. The male Mouse Spider often has a bright red head and
elongated fangs.
The Mouse Spider is often mistaken for the Funnel-Web Spider. The
main differences being the Funnel-Web has much longer spinnerets
(the 2 appendages on the end of the abdomen) and the male funnel-web
has a spur on it's second leg - as illustrated above.
Habitat - Mouse spiders are ground dwellers with burrows of more
than 1 metre deep. The male often wanders about during the day on
open ground, especially after rain, in search of females.
CLICK HERE for more info on Mouse Spiders
CLICK HERE - FIRST AID - Mouse Spider Bite
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| Black House Spiders...venomous - nausea
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Venom toxicity - the bite of the Black House Spider is poisonous but
not lethal. Certain people bitten experience severe pain around the
bite site, heavy sweating, muscular pains, vomiting, headaches and
giddiness. First aid and medical attention (ambulance) should be
sought as soon as possible.
Area of distribution - Australia-wide.
Spider Identification - adults are about 15 mm in body length and of
a dark brown to black velvet textured appearance.
Habitat - this spider spins a lacy, messy web and is prefers dry
habitats in secluded locations. It is commonly found in window
framing, under eaves, gutters, in brickwork, sheds, toilets and
among rocks and bark. Electric lights attract their prey - moths,
flies, mosquitoes and other insects.
CLICK HERE for more info on Black House
Spiders
CLICK HERE - FIRST AID - Black House Spider
Bite
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| Wolf Spiders...venomous - non-aggressive
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Venom toxicity - the bite of the Wolf Spider is poisonous but not
lethal. Although non-aggressive, they bite freely if provoked and
should be considered dangerous to humans. The bite may be very
painful. First aid and medical attention should be sought as soon as
possible, particularly as to children or the elderly.
Area of distribution - Australia-wide.
Spider Identification - an adult is 15 mm to 30 mm in body length -
mottled grey to brown in colour, with a distinct Union Jack
impression on it's back. The female carries it's young on it's back.
Habitat - this spider is a ground dweller, with a burrow retreat. It
has a roving nocturnal lifestyle to hunt their prey and can move
very rapidly when disturbed. Commonly found around the home, in
garden areas with a silk lined burrow, sometimes with a lid or
covered by leaf litter or grass woven with silk as a little fence
around the rim of the burrow.
CLICK HERE for more info on Wolf Spiders
CLICK HERE - FIRST AID - Wolf Spider Bite
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| Trap-Door Spiders...low risk -
non-aggressive |
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FEMALE
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Venom toxicity - the bite of the Trap-Door Spider is of low risk
(non toxic) to humans. It is a non-aggressive spider - usually timid
but may stand up and present it's fangs if harassed. Rarely bites -
but if so it can be painful.
Area of distribution - Australia-wide.
Spider Identification - an adult is about 35 mm in body length -
brown to dark brown in colour - heavily covered with fine hairs. The
male has distinct boxing glove-shaped palps, that is, the two
"sensory feelers" at front of it's head.
Habitat - this spider is a ground dweller, with a burrow retreat
lined with silk of up to 250 mm in depth and around 25 mm in width -
prefers nesting in drier exposed locations - often has a wafer-like
lid on the burrow entrance. Trap-Door Spiders are commonly found in
the drier open ground areas around the home.
CLICK HERE for more info on Trap Door Spiders
CLICK HERE - FIRST AID - Trap Door Spider Bite
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| Orb-Weaving Spiders...low risk -
non-aggressive |
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Venom toxicity - the bite of Orb-Weaving Spiders is of low risk (not
toxic) to humans. They are a non-aggressive group of spiders. Seldom
bite. Be careful not to walk into their webs at night - the fright
of this spider crawling over one's face can be terrifying and may
cause a heart attack, particularly to the susceptible over 40 year
olds.
Area of distribution - Australia-wide, particularly common in
bushland along the eastern coastal areas.
Spider Identification - an adult is about 20 mm to 30 mm in body
length - has a bulbous abdomen - often colorful - dark to light
brown pattern. The common Golden Orb-Weaver Spider has a purplish
bulbous abdomen with fine hairs.
Habitat - often found in summer in garden areas around the home -
they spin a large circular web of 2 metres or more, often between
buildings and shrubs, to snare flying insects, such as, flies and
mosquitoes.
CLICK HERE for more info on Orb-Weaving
Spiders
CLICK HERE - FIRST AID - Orb-Weaving Spider
Bite
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| St Andrews Cross Spiders...low risk -
non-aggressive |
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Venom toxicity - the bite of the St Andrews Cross is of low risk
(non-toxic) to humans. They are a non-aggressive group of spiders.
Area of distribution - Australia-wide.
Spider Identification - adult 5 to 15 mm in body length - abdomen
striped yellow and brown - as illustrated. The St Andrews Cross
Spider usually sits, upside down, in the middle of it's web forming
a cross - as illustrated.
Habitat - this spider is a web-weaver usually found in summer in
garden areas around the home. It is considered beneficial as it
spins a large web to snare flying insects, such as flies and
mosquitoes.
CLICK HERE for more info on St Andrews Cross
Spiders
CLICK HERE - FIRST AID - St Andrews Cross
Spider Bite
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| Huntsman Spiders...low risk -
non-aggressive |
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Venom toxicity - the bite of Huntsman Spiders is of low risk (non
toxic) to humans. They are a non-aggressive group of spiders.
However, a large individual can give a painful bite. Beware in
summer when the female Huntsman Spider is guarding her egg sacs or
young.
Area of distribution - Australia-wide.
Spider Identification - an adult varies greatly around 15 mm in body
length - has long legs - the diameter of an adult including legs may
reach 45 mm - the first 2 pairs of legs are longer than rear two -
it is hairy - buff to beige brown in colour, with dark patches on
the body.
Habitat - a hunter that prefers to live under the flaking bark of
trees, under flat rocks and under eaves or within roof spaces of
buildings. The Huntsman Spider often wanders into homes and is found
perched on a wall. It is a shy, timid spider that can move sideways
at lighting-fast speed when disturbed.
CLICK HERE for more info on Huntsman Spiders
CLICK HERE - FIRST AID - Huntsman Spider Bite
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