An app has been launched to help potentially terrified people identify invading house spiders that scurry indoors in the autumn.
Indoor spider numbers increase during this time of the year as frisky males go on the hunt for a mate, which leads them into abodes where humans encounter them trapped in the bath or lurking in the corner of a room.
The Society Of Biology is launching a Spider In Da House app with photos, identification tools and information to help people identify and learn more about 12 of the most common spiders which become temporary house guests.
Professor Adam Hart, from the University of Gloucestershire, said: "By eating flies and other insects, spiders are not only providing us with a pest control service, but are important in ecosystems.
"They often feed on the most common species, preventing a few species from becoming dominant. We want to encourage people to respect and learn more about their little house guests."
The app also helps users to identify whether spiders are male or female. Female spiders are often larger than the males.
The Spider In Da House app is available from the Apple App Store and Google Play.