Wandering spider

The wandering spiders (or running spiders in Europe) is a term used to refer to the spider family Ctenidae. Previously, the term referred only to the genus Phoneutria but now usually refers to the entire family Ctenidae. The members of the genus Phoneutria are highly aggressive and venomous nocturnal hunters, and are the only wandering spiders known to pose a serious danger to humans.

Intertidal spider

The intertidal spiders (family Desidae) live in a very unusual location — between the tides. Once thought to be limited to the Southern Hemisphere, members of this family in the genus Paratheuma were discovered in northern Sonora and the Florida Keys during the last half of the 20th Century.

Lycosa tarantula

These spiders are rather large, the females being as large as 30 mm (1.18 in.) in body length and the males around 19 mm (0.75 in.). As with other wolf spiders, the silken sac containing over one hundred eggs is carried attached to the mother's spineretes, and then after they hatch the baby spiders climb on their mother's abdomen and ride around with her for some time until they are sufficiently mature to survive on their own.