St Andrew’s cross spider (Argiope sp.)
The zig-zags in the web of a St. Andrew’s cross spider form a large X shape, similar to the heraldic symbol known as a saltire. It’s also known as Saint Andrew’s cross, since Andrew the Apostle is traditionally said to have been crucified on a diagonal cross in the shape of the letter X. When the spider sits in the middle of the cross, it can look as though it’s suffering a similar fate. (In reality, of course, that fate is reserved for the spider’s prey.)
8 Things You Should Know About the St. Andrew’s Cross Spider – Treehugger
The size of a St. Andrew’s cross spider might be intimidating, but it poses very little danger to people. Its venom is not highly toxic to humans, and like most spiders, it is generally not aggressive with people. Treehugger
Spotted at MacRitchie Reservoir