Score :
Fails (6):

Tuesday, April 3, 2012

Baby Black Widow Spider

Average life span in the wild:
1 to 3 years
1.5 in (38 mm) long, 0.25 in (6.4 mm) in diameter
.035 ounce (1 gram)
Group name:
Black widow spiders are considered the most venomous spiders in North America.


Phylum Arthropoda
Class Arachnida
  • Class Acarina (about 10,000 species of mites and ticks)
  • Class Amblypygi (about 50 species similar to whip scorpions, but with antenna-like first pair of legs)
  • Class Araneae (about 20,000 species of spiders)
  • Class Opiliones (about 2400 species of harvestmen or Daddy long-legs)
  • Class Palpigradi (about 21 species of micro-whip scorpions)
  • Class Pseudoscorpionida (about 110 species of small arachnids with venomous pincers)
  • Class Ricinulei ((about 15 species of ricinuleids, small, short-legged arachnids from Africa)
  • Class Scorpionida (about 600 species of scorpions)
  • Class Solfugae (about 570 species of camel or sun spiders)
  • Class Uropygi (about 105 species of Whip scorpions, like the Vinegaroon)

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