This may well be my only submission for Arachtober! This is what Gary calls an End-of-the-season-geez-thanks-for-at-least-a-live-arthropod Spider, but hopefully I will have more arthropods to share before the season ends.
Pityohyphantes costatus is a Hammock Spider, a sheet web weaver in the family Linyphiidae. As the name suggests, these spiders spin a horizontal web like a fine gauze sheet and then lay in wait under a nearby leaf. When prey lands on the web, the spider will run out and capture it from underneath. I spotted this one while looking up under leaves while walking the Amisk Wuche trail in Elk Island National Park.
Thanks to Don Buckle and Robin Leech for the ID!
(Canon 70D with MP-E85mm lens. ISO 200, 1/250 sec. @ f16. Lighting with diffused pair of Canon 270 EXII flashes.)