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Windscorpions (Solfugidae)

Windscorpions, sometimes called sunspiders or camelspiders, are an order of arachnids which inhabit areas with low annual precipitation.  The name Windscorpion is derived from the incomprehensible speeds they attain when disturbed.  Although, not as fast as Tiger Beetles apparently, it is remarkable that a creature with such small eyes can move so quickly.  Instead, Windscorpions rely on a very sensitive sense of tough.  Small hairs line the entire body, and on the underside of the last set of legs are numerous upside-down figure "T's".  The exact purpose of these is unknown to me. 

Another interesting trait of this arachnid are the two strange forward-pointing appendages.  At first glance, they might appear to be cumbersome, and just in the way.  After watching the way the animal uses them, though, it is clear they serve a very important purpose.  From the ends of each appendage, a white stringy muscle-like tissue can be extended.  It has remarkable attachment properties, although its not necessarily sticky or abrasive, etc.  I have seen Solfugids use them to hold onto the sides of the plastic containers I have collected them in.  It's seems probable that they are used to catch and hold small prey.

Finally, the Solfugid mouth is one to be reckoned with.  Capable of inflicting a painful, although non-venomous bite, Solfugids rely on a power to take down prey of various sizes.  They have voracious appetites which is not surprising when you witness their speed and realize what fast metabolism must support it.  With the help of a few pins, I was able to take a closer look at a dead specimen (below).  It seems that the mouth consists of two openings.  In the third picture down, there is a pin entering the opening of one of the tubes.