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HOBO SPIDERS 
Facts and Fallacies
HOBO SPIDERS 
The hobo spiders (scientific name Tegenaria agrestis) 
belongs to the genus of funnel web spiders. They are often 
confused with the Australian funnel web spiders. 
This species was first discovered by in 1802 by naturalist 
C.A. Walkenaer in Western Europe. They generally avoid 
human settlements because of competition with other 
spiders, such as the much larger Giant Domestic Spider. 
Let us have a look at the facts and fallacies regarding this 
aggressive spider
Fallacies Facts 
Aggressiveness Hobo Spiders are 
aggressive and will 
attack unprovoked 
Although known as The 
Aggressive House 
Spider, they generally 
do not bite unless 
forced to protect 
themselves. If a hobo 
spider is protecting an 
egg sac, it may become 
aggressive if it 
perceives the egg sac 
as being threatened 
Web Construction All spiders who create 
funnel shaped webs are 
Hobos. 
Not all spiders which 
has funnel-shaped 
webs are Hobo Spiders.
Fallacies Facts 
Toxicity The bite of the Hobo 
Spider can kill a rabbit 
and cause serious 
impact on a human. 
Based on toxicology 
studies done in the US 
involving rabbits, the 
bite of the Hobo Spider 
can cause necrotizing 
lesions. However, the 
venom is not enough to 
kill a rabbit, much more 
a grown man. 
Severity of the Bite A bite from the Hobo 
Spider can cause tissue 
death or necrosis. 
The tissue necrosis has 
been proven on the 
case of Hobo Spider 
bites for rabbits, but 
supporting data on bites 
inflicted on humans 
have inconclusive data 
on the actual severity of 
the bite.
Fallacies Facts 
Size Hobo Spiders can grow 
up the size of the palm 
of a grown man. 
Hobo Spiders are 
typically less than two 
inches in diameter 
(including the legs). 
Habitat and Range Hobo Spiders can be 
found in almost every 
part of the world 
The Hobos are 
originally from western 
Europe and has come 
to the US via shipping 
crates. Their habitat in 
the US is in the Pacific 
North West
HOW TO IDENTIFY HOBO SPIDERS 
Spiders vary in appearance. So their identification is 
difficult and can only be done by arachnologist. 
However, the following characteristics can help in 
identification of hobo spiders: 
 Hobo spiders lack the coloured bands found on 
many spiders of the Agelenidae family where the leg 
joints meet. 
 The abdomen has chevron (V-shaped) patterns 
down the middle, with the chevrons pointing towards 
the head. 
 Hobo spiders have a light stripe running down the 
middle of the sternum

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Hobo spiders

  • 1. HOBO SPIDERS Facts and Fallacies
  • 2. HOBO SPIDERS The hobo spiders (scientific name Tegenaria agrestis) belongs to the genus of funnel web spiders. They are often confused with the Australian funnel web spiders. This species was first discovered by in 1802 by naturalist C.A. Walkenaer in Western Europe. They generally avoid human settlements because of competition with other spiders, such as the much larger Giant Domestic Spider. Let us have a look at the facts and fallacies regarding this aggressive spider
  • 3. Fallacies Facts Aggressiveness Hobo Spiders are aggressive and will attack unprovoked Although known as The Aggressive House Spider, they generally do not bite unless forced to protect themselves. If a hobo spider is protecting an egg sac, it may become aggressive if it perceives the egg sac as being threatened Web Construction All spiders who create funnel shaped webs are Hobos. Not all spiders which has funnel-shaped webs are Hobo Spiders.
  • 4. Fallacies Facts Toxicity The bite of the Hobo Spider can kill a rabbit and cause serious impact on a human. Based on toxicology studies done in the US involving rabbits, the bite of the Hobo Spider can cause necrotizing lesions. However, the venom is not enough to kill a rabbit, much more a grown man. Severity of the Bite A bite from the Hobo Spider can cause tissue death or necrosis. The tissue necrosis has been proven on the case of Hobo Spider bites for rabbits, but supporting data on bites inflicted on humans have inconclusive data on the actual severity of the bite.
  • 5. Fallacies Facts Size Hobo Spiders can grow up the size of the palm of a grown man. Hobo Spiders are typically less than two inches in diameter (including the legs). Habitat and Range Hobo Spiders can be found in almost every part of the world The Hobos are originally from western Europe and has come to the US via shipping crates. Their habitat in the US is in the Pacific North West
  • 6. HOW TO IDENTIFY HOBO SPIDERS Spiders vary in appearance. So their identification is difficult and can only be done by arachnologist. However, the following characteristics can help in identification of hobo spiders:  Hobo spiders lack the coloured bands found on many spiders of the Agelenidae family where the leg joints meet.  The abdomen has chevron (V-shaped) patterns down the middle, with the chevrons pointing towards the head.  Hobo spiders have a light stripe running down the middle of the sternum