Webs made by spiders fed with drug-dosed flies

LSD spider's web mescaline spider's web
web of a spider on LSD                                    web of a spider on mescaline

hashish spider's web caffeinated spider's web
web of a spider on hashish                                   web of a spider on caffeine

a drug-free spider's web
Just Say No: web of a drug-naïve spider

see
Spider Communication: Mechanisms and Ecological Significance
Edited by Peter N.Witt & Jerome S. Rovner – Princeton University Press -1982


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