What a great day. It’s Halloween AND spiderday. On the same day. And it’s the 20th edition of spiderday. It just doesn’t get any better.  Here are the arachnid-themed stories I pulled from the web over the past week.

But first… just LOOK AT THIS amazing little spider:

A ‘tube spider’ (genus Dipoena) by Daniel Llavaneras.

• A post for Halloween… Spiders: how spooky are they?
• And here is the BEST spider-themed Halloween costume out there.
• What should you do if you are bitten by a spider? Here’s a terrific post, with Australian focus, on the topic. It’s my read of the week.
• Catherine Scott live-tweeted some spider sex. It was very popular – so much so that the national news in Canada picked it up. Well done, Catherine!
• Arrrr you ready for the next post… PIRATE SPIDERS! Avast!
• Good glue: spider silk and bioinspiration for material science.
• Mites like to hitch rides on animals. Here’s a post on that topic. “Is that a Wombat on your belly…?“
• Yikes: some itchy oak mites are showing up in parts of the USA.
• Spiders feed birds:

• I’m sad that Arachtober is over. Africa Gomez had amazing posts all month. Here’s one on a relatively unknown family of ant-mimics: the Zodariidae
• Do brown recluse spider reign by terror?
• Entomologist Matt Bertone does a nice piece on North Carolina Television… “some nice spiders” he says. Indeed!
• Pseudoscorpions + birds: a novel symbiosis between weaver birds and pseudoscorpions in southern Africa
• Here’s something on spiders from forest reserves in India.
• For taxonomists, a new species of Tarantula from Columbia! 
• Here’s a introductory poster from “Ontario Nature” all about spiders: you don’t need to spray pesticides against them!
• There’s a spider emoji now.
• What to expect when your cellar spider is expecting.
• Thousands of spiders take over a bridge in Ohio. A video full of enthusiasm and natural history: