Female
black
widows
are
black
and
shiny.
They
have
red
markings
on
their
abdomens.
Male
black
widows
are
brown
or
gray.
They
have
red
dots
on
their
bodies.
Black
widow
spiders
live
around
the
world.
They
are
often
found
in
warm
places.
Only
female
black
widows
spin
webs.
Male
black
widows
do
not
eat.
Females
mainly
eat
insects.
They
spin
strong
webs
to
trap
their
prey.
The
female
spins
silk
around
her
prey.
Then
she
injects
the
prey
with
venom.
A
female
black
widow
spins
silk
around
her
eggs.
This
protects
the
eggs.
The
egg
sac
hangs
from
the
web.
Males
live
only
a
month
or
two.
Females
can
live
approximately
one
year.



