CJ's Bug Blog
Dangerous U.S. Spiders
When people see me pick up a spider with my bare hands and throw it outside, their typical reaction is “You are crazy! How do you know that spider isn’t dangerous?”
Here is the answer, out of approximately 3,000 different species of spider in North America, only two species from the U.S. are considered deadly. These are the brown recluse spider and the black widow spider. These spiders are easy to identify (See the first two on the above chart. The brown recluse has a violin shape on top of the cephalothorax and the black widow has an hourglass shape on the underside of the abdomen) and therefore pretty easy to avoid being bitten by, but even if you are bitten, it is very unlikely that you would die if you sought medical attention.  In the U.S. there are only an average of four spider deaths reported per year.
There are other spiders in the U.S. that are somewhat dangerous but not deadly.  If you are bitten by one of them you may experience some unpleasant symptoms but not death. You can see some of these spiders in the chart above.
*Note: If a small child or pet is bitten by one of these venomous spiders they are much more likely to be seriously affected.
Please stay aware of spiders that could be dangerous and only handle spiders that you know are not significantly dangerous, but also recognize that spiders are very beneficial creatures and try not to kill them whenever possible, dangerous or not! It’s just rude. Just let them be, even spiders that do have potent venom are often not aggressive. They just want to be left alone.
Note: There are many mistakes in this chart, I did not make the chart, I am using it purely as a visual aid. Thanks.
Another Note: The “Mouse Spider” depicted in the chart IS NOT FOUND IN THE U.S. The one in the chart is not the same “Mouse Spider” that is found in the U.S. This was a mistake by the creators of the chart, the “Mouse Spider” found in the U.S. looks entirely different and is NOT known to be dangerous.
Sources:
http://emedicine.medscape.com/article/772196-overview#a0199
http://rodneysouthern.hubpages.com/hub/How-to-Identify-Poisonous-Spiders
http://www.termite.com/spider-identification.html#blackwidow
https://sites.google.com/site/venomousdangerous/spiders/n-america-s-most-venomous-spiders
http://cru.cahe.wsu.edu/cepublications/eb1548/eb1548.html

Dangerous U.S. Spiders

When people see me pick up a spider with my bare hands and throw it outside, their typical reaction is “You are crazy! How do you know that spider isn’t dangerous?”

Here is the answer, out of approximately 3,000 different species of spider in North America, only two species from the U.S. are considered deadly. These are the brown recluse spider and the black widow spider. These spiders are easy to identify (See the first two on the above chart. The brown recluse has a violin shape on top of the cephalothorax and the black widow has an hourglass shape on the underside of the abdomen) and therefore pretty easy to avoid being bitten by, but even if you are bitten, it is very unlikely that you would die if you sought medical attention.  In the U.S. there are only an average of four spider deaths reported per year.

There are other spiders in the U.S. that are somewhat dangerous but not deadly.  If you are bitten by one of them you may experience some unpleasant symptoms but not death. You can see some of these spiders in the chart above.

*Note: If a small child or pet is bitten by one of these venomous spiders they are much more likely to be seriously affected.

Please stay aware of spiders that could be dangerous and only handle spiders that you know are not significantly dangerous, but also recognize that spiders are very beneficial creatures and try not to kill them whenever possible, dangerous or not! It’s just rude. Just let them be, even spiders that do have potent venom are often not aggressive. They just want to be left alone.

Note: There are many mistakes in this chart, I did not make the chart, I am using it purely as a visual aid. Thanks.

Another Note: The “Mouse Spider” depicted in the chart IS NOT FOUND IN THE U.S. The one in the chart is not the same “Mouse Spider” that is found in the U.S. This was a mistake by the creators of the chart, the “Mouse Spider” found in the U.S. looks entirely different and is NOT known to be dangerous.

Sources:

http://emedicine.medscape.com/article/772196-overview#a0199

http://rodneysouthern.hubpages.com/hub/How-to-Identify-Poisonous-Spiders

http://www.termite.com/spider-identification.html#blackwidow

https://sites.google.com/site/venomousdangerous/spiders/n-america-s-most-venomous-spiders

http://cru.cahe.wsu.edu/cepublications/eb1548/eb1548.html

  1. tikigodremix reblogged this from 10threesevenone35
  2. rodriguez709 reblogged this from 10threesevenone35
  3. fensterguck reblogged this from 10threesevenone35
  4. 10threesevenone35 reblogged this from cjsbugs and added:
    know your enemy!
  5. 67chevyimpaula reblogged this from cjsbugs
  6. pansexual-paradise reblogged this from cjsbugs and added:
    Maybe it is because i am pansexual and see things for what they are, but i feel this chart will induce fear. sure deadly...
  7. idriss-m reblogged this from sapphiremallory and added:
    I never knew those funnel spiders had a venomous bite. There are quite a few of them in this basement apartment i’m in...
  8. sapphiremallory reblogged this from bayamontate
  9. bayamontate reblogged this from cjsbugs
  10. sharckatack reblogged this from picknickbasket
  11. sweetsouthern88 reblogged this from picknickbasket
  12. picknickbasket reblogged this from stigmartyr762
  13. someonetocuddleandsmokewith reblogged this from cjsbugs
  14. prokeyboardmasher reblogged this from purenavyseal
  15. jobe00 reblogged this from stigmartyr762 and added:
    There are only two kinds of spider: dead or alive. Dead is almost acceptable.
  16. stigmartyr762 reblogged this from purenavyseal
  17. dougnolan1 reblogged this from purenavyseal
  18. purenavyseal reblogged this from cjsbugs and added:
    fucking see brown recluses all the time. used to have nightmares about black widows damn
  19. darkjubilee888 reblogged this from cjsbugs
  20. xx-rapunzel-xx reblogged this from jacquiescence and added:
    I
  21. dagsbanana reblogged this from cjsbugs
  22. nikokekomiko reblogged this from angellust155
  23. partiallyfilled reblogged this from lovesick4mina