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Arachnology
Leucauge

House spiders pose no significant danger to you, your children or your pets. Especially compared to your fellow humans!

Giant house spider

No, those big, hairy, fast-moving spiders you see indoors are not wolf spiders (well, hardly ever). Most likely male house spiders.

Diagram of spiders and drains

Spiders in sinks and bathtubs come down the walls, attracted by water. They cannot come up through the drains!

Cartoon by Owen Curtsinger of a spider being ejected from a house.

If you put a house spider out in the yard, you aren't doing it any favor; it probably won't survive there.

graph of number of species living indoors or outside

Outdoor spiders are not drawn to indoor habitats where they can't survive. Indoor spiders are different species, called house spiders.

Leucauge

Your house (and any other house) contains 10-30 spider species, not just one!

Leucauge

Why, oh why, do people think any unfamiliar spider must be "new to the area" and presumed dangerous?

Leucauge

The spider you're trying to identify does not have to be one of the few species you've already heard of!

Pulverized spider remains

Spiders sent for ID in an envelope (even if padded) are likely to arrive powdered! Send it in a rigid container, preferably in alcohol.

Leucauge

Don't trust physicians and pest control operators to correctly identify a spider; only an arachnologist has the required training and skill.

Cybaeus reticulatus on yellow background

A picture that "looks just like" your spider does not identify it!

Spider on quarter

Please use inches or centimeters, not "silver dollars" or other coins, to describe the size of spiders!

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