The <a href="https://en.wikipedia.org/wiki/brown_recluse_spider" class="extiw" title="w:brown recluse spider">brown recluse spider</a> (<i>Loxosceles reclusa</i>). There are several members of this genus that are even more venomous.
<a href="https://en.wikipedia.org/wiki/John_C._Stennis_Space_Center" class="extiw" title="w:John C. Stennis Space Center">John C. Stennis Space Center</a>, <a href="https://en.wikipedia.org/wiki/National_Aeronautics_and_Space_Administration" class="extiw" title="w:National Aeronautics and Space Administration">National Aeronautics and Space Administration</a> (NASA).
Unknown<span style="display: none;">Unknown </span>; uploaded on 15 May 2005.
<a rel="nofollow" class="external free" href="http://www.ssc.nasa.gov/environmental/resource_mngmnt/natural_resources/poison/spdrsinfo.htm">http://www.ssc.nasa.gov/environmental/resource_mngmnt/natural_resources/poison/spdrsinfo.htm</a>.