it is a gender indicator; red means male and yellow means female
hourglass
A black widow is a deadly spider. A black widow also has a red hourglass-shaped mark on her abdomen.
The black widow spider.
you might mean a black widow. it is actually an arachnid or spider. a black widow has eight legs, a red hourglass shape on the bottom, and is very poisonous.
It is black, and has a red hourglass-like shape on its abdomen.
No. The black widow is a shiny black with a bright red hour glass shape on its back.
A black widow is a a relatively small black seemingly hairless spider with a telltale red hourglass shape marking on its abdomen
The black spider that resembles a black widow without the red hourglass marking is likely the false black widow spider (Steatoda grossa or Steatoda nobilis). They are similar in appearance to black widows but lack the distinctive red hourglass marking. These spiders are not as venomous as black widows but can still deliver a painful bite.
Brown Widow Spiders. When the subject of dangerous spiders comes up, the average person usually thinks about the black widow spider. Their shiny black body with a prominent red hourglass marking on the underside of the abdomen is an image that readily comes to mind. Source: Google.com
The spiders you are referring to are black widows, known for their distinctive black coloration with a red hourglass shape on their underside. They are venomous and found in various parts of the world.
Only black widows have hourglasses on their backs... You should probably be careful
It may be a Black Widow spider. They are very poisonous and it is probably best not to approach it if you are unsure of the species. Black spiders have a distinctive red "hourglass" shape on its back.