How many types of widow spiders are there?

Answer 1

You will find them listed here
http://www.srv.net/~dkv/hobospider/widows.html

southern widow, Latrodectus mactans
The western black widow, Latrodectus hesperus
and more.

Answer 2

The black widow spider, Latrodectus mactans, has a prominent red hourglass figure on the underside of its abdomen. Many of the other widow spiders have red patterns on a glossy black or dark background, which serve as a warning. Some of the more well known species of widow spiders are listed below, together with some of the areas where they are found. This list should not be considered complete. Spiders which are found in multiple geographies are listed in their predominant native habitat.

1.Latrodectus hesperus, the Western black widow, western USA. Also found in Israel.
2.Latrodectus mactans, the black widow spider (sometimes called the Southern black widow), warm regions of the USA
3.Latrodectus variolus, the Northern black widow, from the extreme southeastern part of Canada and south to northern Florida, with frequency higher in the northern part of this range.

Answer 3

Black widow and Brown widow that I know of...
Black is indigenous to the USA and Brown is more of
a tropical spider and a recent illegal immigrant into the southern US.

Answer 4

"the Black Widow, Brown Recluse and now the Brown Widow."

These are spiders that are poisonous to humans... Read this article.......http://news.yahoo.com/s/ap/20061003/ap_on_sc/brown_widow

Answer 5

I've only known Latrodectus Mactans, they typical with the sand clock in the belly.

Answer 6

2 - Black and Brown

Answer 7

That just depends on how many married spideys have died.

Answer 8

lots, they all eat the males after mating.