MadSci Network: Zoology

Re: Can spiders see in the dark?

Date: Fri May 14 12:54:06 1999
Posted By: David Richman, Staff, Entomology, New Mexico State University
Area of science: Zoology
ID: 926512880.Zo

Actually, most spiders have poor eyesight even in daytime.  They depend on 
other senses, especially tactile (touch)or chemical receptors.  Of the 
nocturnal hunters only some wolf spiders (Lycosidae) and ogre-faced spiders 
(Deinopidae) have good eyesight that may function in the dark, probably 
under star or moon light. Most jumping spiders (Salticidae), which have the 
best eyes found in spiders, cannot locate prey at night at all.  The few 
that can apparently use tactile or chemical clues instead of eyesight.

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