Re: Do tarantula spiders spin webs?

"True" tarantulas (bird-eating spiders) in the family Theraphosidae do not 
spin capture webs, but do line their burrows and cover their egg masses 
with silk.   There are related families in the United States that do spin 
capture webs (for example the Dipluridae or sheet- or funnel-web 
tarantulas), but these spiders are much smaller than "true" tarantulas.   
The name "tarantula" was usurped from  Italian wolf spiders when Italian 
sailors with the first Spanish expeditions to the New World saw bird-eating 
spiders for the first time. 

Reference:

Gertsch, W. J. 1979.  American Spiders, 2nd ed.  Van Nostrand Reinhold, New 
Your.