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USA Spider Identification Chart
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Apply
online for a FREE Spider Identification Chart with FIRST AID
spider bite procedures - color A4 size - Ready Reference
Guide to common USA spiders.
Featured are the brown recluse,
black widow, hobo spider, wolf spider, white-tail spider, black
house spider, huntsman and other spiders with notes to aid in identification.
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HERE for your FREE Spider Identification Chart
to be mailed direct to you, free of charge. |
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Spider Identification - Dangerous - Venomous?
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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.
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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.
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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.
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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.
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HERE - FIRST AID - Funnel Web Grass Spider Bite |
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| 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 |
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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.
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 |
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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.
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 |
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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.
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.
CLICK HERE - FIRST AID - Huntsman Spider Bite |
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Published by Fumapest Group © copyright
1995 - updated:
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