Nocturnal Escapades
A Yellow Sac Spider, a species introduced from Eurasia, was found trapped in our sink this morning. I captured it, but before letting it go outside, I cooled it in the refrigerator and then took it's photo.
This is a common spider in our house, and one often found wandering the walls and fingering the ceilings, especially after dark. Occasionally, they are found ensconced in their silken, namesake sacs, hung in the high corners like mountain climber tents.
These pale-legged spiders prowl nightly for prey. According to Common Spiders of North America by Richard Bradley, spiders of this genus roam over vegetation at night, overtaking their prey. Curiously, these nightly escapades are subsidized by a diet of plant nectar. More curiously, then, one wonders what kind of sports drink these spiders substitute for plant nectar in a house without plants?
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