What is the species of the 2 inch fast moving centipedes I find under rotted leaves?

[Dr. Octopus]

I live in Massachusetts, and often under rocks or rotted leaves I will spot these lightning quick tiny centipedes- about 2 inches or so, orange in color- They are so fast if you pick one up, they will reach around and bite, before you have time to react- and despite their small size, the bite can sting like hell- What species of centipede would this be? Are they indiginous to North america? Despite the size difference, would the general antomy of this tiny centipede be the same as the giant south American centipedes?

 

[Dr. Octopus]

whoops, I meant to post this in the 'pede' section...

 

[cacoseraph]

http://www.geocities.com/blight_child/centis/states/cent_MA.html

those are the giant centipedes in your state

if the centipede has 15 pairs of walking legs it is a stone centipede. if it has 21 or 23 it is a giant centipede. if it has a gazillion it is a soil centipede.

i would lean towards either stone centipede or Scolopocryptops if it is a giant (giant being relative, heh)