a black widow spider hangs from its web on a brick wall

animals arachnids arachnophobia black widow dangerous spider web 039 spiders venomous wildlife hangs brick wall characteristic red hourglass marking visible spider’s abdomen abdomen animals arachnid arachnids arachnophobia black widow spider wall bricks bug close-up creepy danger dangerous egg sack fangs hourglass insect macro outdoors phobia poisonous predator red scary web spider#39aph39#s spiders venom venomous wildlife bite animal brick legs isolated fears