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Spider
Identification - Dangerous -
Venomous? |
| Spider identification of
venomous and dangerous spiders most
commonly found in homes, their
habitat areas, venom toxicity and
spider bite first aid procedures.
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Brown
Recluse Spiders ...deadly and
aggressive |
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Venom toxicity - the
brown recluse venom can cause
significant cutaneous injury with
tissue loss and necrosis.
Habitat - brown
recluse is found in the United
States from the east to the west
coast, with predominance in the
south.
Spider Identification
- an adult spider is 1/4 to 3/4 inch
in body - a dark violin shape is
located on the top of the leg
attachment region with the neck of
the violin pointing backward toward
the abdomen. Unlike most spiders
that have 8 eyes, the brown recluse
has 6 eyes arranged in pairs - one
pair in front and a pair on either
side.
CLICK
HERE - FIRST AID - Brown Recluse
Spider Bite |
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Black
Widow Spiders ...highly venomous -
can be deadly |
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Venom toxicity - the
Back Widow Spider can inflict a
painful bite which can be fatal,
especially to the young and elderly.
An effective anti-venom was
developed in 1956.
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 and
hypertension.
The pain around the bite area can be
excruciating or it may go unnoticed.
First aid and medical attention
should be sought as soon as
possible, if bitten. If you have
heart condition or other heart
problem, you may need
hospitalization.
Spider Identification
- the body of an adult black widow
is about 1/2 inch long. The female
black widow is normally shiny black,
with a red hourglass marking on the
underside of the abdomen. The
marking may range in color from
yellowish orange to red and its
shape may range from an hourglass to
a dot.
Habitat - prefers
woodpiles, rubble piles, under
stones, in hollow stumps, sheds and
garages. Indoors it can be found in
undisturbed, cluttered areas in
basements and crawl spaces.
CLICK
HERE - FIRST AID - Black Widow
Spider Bite
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Hobo
Spiders : venomous - dangerous? |
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Venom toxicity -
although the bite of the hobo spider
is initially painless, the bite can
be serious. After 24 hours, the bite
develops into a blister and after
24-36 hours, the blister breaks
open, leaving an open, oozing
ulceration. Typically when the venom
is injected, the victim will
experience an immediate redness,
which develops around the bite. The
most common reported symptom is
severe headache. Other symptoms can
include nausea, weakness, fatigue,
temporary memory loss and vision
impairment. In any case, first aid
and medical attention should be
sought, if bitten, as and when any
adverse health effects are observed.
Spider Identification
- they are brown in color and the
adults measure roughly 1/3 to 2/3
inch in body length and 2/3 to 2
inches in leg span. Their abdomens
have several chevron shaped
markings. Males are distinctively
different from females in that they
have two large palpi (mouth parts)
that look like boxing gloves.
Females tend to have a larger and
rounder abdomen when compared to
males.
Habitat - they can
be found anywhere in Washington,
Oregon, Idaho, Montana, Wyoming,
Utah and Colorado. They rarely climb
vertical surfaces and are uncommon
above basements or ground level.
CLICK
HERE - FIRST AID - Hobo Spider Bite |
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Funnel Web
Grass Spiders: low risk,
non-aggressive |
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Venom toxicity - the
bite of these spiders is of low risk
to humans.
Spider Identification
- are common outdoors and are
occasionally found indoors. They are
generally brownish or grayish with
light and dark stripes near the
head. They have long spinnerets and
are moderate-sized (3/4 inch long).
Grass spiders construct a large
sheet web with a funnel they use as
a retreat. These webs are commonly
built on the ground, around steps,
window wells, foundations, and low
shrubs.
Habitat - These
spiders are often called grass
spiders because they construct their
webs in tall grass, heavy ground
cover and the branches of thick
shrubs. Rarely will a funnel web
spider be seen indoors, except for
an occasional wandering male. They
are found mostly in the Pacific
Northwest states.
CLICK
HERE - FIRST AID - Funnel Web Grass
Spider Bite |
| Mouse
Spiders ...venomous - painful bite
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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.
Spider Identification
- a medium to large spider of up to
1 and 1/2 inches in body length. The
male Mouse Spider often has a bright
red head and elongated fangs.
Habitat - Mouse
spiders are ground dwellers with
burrows of more than 3 feet deep.
The male often wanders about during
the day on open ground, especially
after rain, in search of females.
CLICK
HERE - FIRST AID - Mouse Spider Bite |
| 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.
Spider Identification
- adults are about 1/2 inch 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 - FIRST AID - Black House
Spider Bite |
| 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.
Spider Identification
- an adult is 1/2 inch to more than
1 inch in body length - mottled gray
to brown in color, with a distinct
Union Jack impression on its back.
The female carries it's young on its
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 - FIRST AID - Wolf Spider Bite |
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Trap-Door Spiders ...low risk -
non-aggressive |
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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.
Spider Identification
- an adult is about 1 and 1/2 inches
in body length - brown to dark brown
in color - heavily covered with fine
hairs. The male has distinct boxing
glove-shaped palps, that is, the two
"sensory feelers" at front of its
head.
Habitat - this
spider is a ground dweller, with a
burrow retreat lined with silk of up
to 10 inches in depth and around 1
inch 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 - 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.
Spider Identification
- an adult is about 2/3 to more than
1 inch 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 6 feet or more,
often between buildings and shrubs,
to snare flying insects, such as,
flies and mosquitoes.
CLICK
HERE - FIRST AID - Orb-Weaving
Spider Bite |
| 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.
Spider Identification
- adult 1/4" to 1/2" in body length
- abdomen striped yellow and brown -
as illustrated. The St Andrews Cross
Spider usually sits, upside down, in
the middle of its 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 - 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.
Spider Identification
- an adult varies greatly around
1/2" in body length - has long legs
- the diameter of an adult including
legs may reach 2" - the first 2
pairs of legs are longer than rear
two - it is hairy - buff to beige
brown in color, 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. |
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