What about the Van Deleckis - Red

And she walked right by me
with red on her hands
and
And like a spider, she's a black widow
Nothing can save me now
And when I saw her there
An angel standing before me

But it's probably a bit too far away - I mean, nothing in the title really indicates to the pictionary...

And the only poem about a spider which comes to mind will be a noiseless patient spider by Walt Whitman - but I don't think that's a song...

Edit What about the Spider and the Fly - the Rolling Stones Angels fly, don't they? And it's a poem by Mary Howitt.