Fun Fact #58: Many spiders of the genus Argyrodes invade the nets of other spiders and eat the bugs caught that the host spider hasn't eaten. It was once thought that the relationship between Argyrodes spiders and their hosts was commensalistic (benefiting only the Argyrodes but no harm to the host). It was found that they not only sometimes stole bigger prey from the hosts net but were also observed munching upon their hosts.

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Fun Fact #58: Many spiders of the genus Argyrodes invade the nets of other spiders and eat the bugs caught that the host spider hasn't eaten. It was once thought that the relationship between Argyrodes spiders and their hosts was commensalistic (benefiting only the  Argyrodes but no harm to the host). It was found that they not only sometimes stole bigger prey from the hosts net but were also observed munching upon their hosts.

trancenova · Answer

Source: http://www.americanarachnology.org/JoA_free/JoA_v10_n2/JoA_v10_p111.pdf Icky! Just had a 36C day... If you're in the Southern Hemisphere, Summer is here! Previous (Many light attracted moths): http://openstudy.com/groups/biology#/groups/biology/updates/4e983f290b8bedaecf4cb492