|MadSci Network: Zoology|
As far as I know there are almost no authenticated instances of bioluminescence in spiders, with the possible exception of the report by Brown (1925, 1926), mentioned in Sivinski (1998) that he had observed a bioluminescent spider in Burma. Perhaps the spider in the photo glows because it is infected with some bioluminescent microorganisms. The general glow is unusual, as most terrestrial arthropods have discrete light organs. I can only say that it is possible, based on Brown's reports, but have never observed it in any spiders at night. Brown, B. 1925-26. A luminous spider. Science 62: 329, & 63:383. Sivinski, J. M. 1998. Phototropism, bioluminescence, and the Diptera. Florida Entomologist, p. 282- See: http://www.fda.edu/FlaEnt/feb81p282.html
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