Spiders With White Spots That Come Out Only at Night

Despite the fact that all spiders have fangs and most are venomous, spiders are rarely a threat to humans. Most spider venom is too weak to harm humans, but there are certain spiders, such as the black widow and the brown recluse, that can cause death in rare cases. Most nocturnal spiders with white spots are harmless to humans.

  1. Brown Widow

    • Widow spiders are found all over the world. They are nocturnal, meaning they are active only at night. Widow spiders are usually found under logs or rocks and under man-made structures, such as sandboxes and storage sheds. When bitten, humans may experience muscle pain, sweating and nausea and should seek medical treatment. The brown widow exists in a variety of colors but is generally light to medium brown and has white spots on its back.

    White Tailed Spider

    • The white tailed spider is a tropical spider native to Australia and New Zealand. Adult white tailed spiders are generally 12 to 15 millimeters in length, gray in color and have a distinct white patch on the back of their abdomen. The juvenile white tailed spider is smaller and has two rows of white spots on its abdomen. The white tailed spider is nocturnal and feeds on other spiders.

    Crablike Spiny Orb Weaver

    • The crablike spiny orb weaver spider is a distinctly shaped spider. It has a large abdomen that is covered with spikes, giving it a crablike appearance. It is very active at night, spinning new webs. Crablike spiny orb weavers come is a wide variety of colors. Their bodies are generally black, some have white spots or markings while others have yellow or red markings.

    Cross Spider

    • The nocturnal cross spider is commonly found in New York. It gets its name from the white spots on its abdomen that form the shape of a cross. The cross spider is a type of orb weaving spider that spins orb-shaped webs at night to catch insects such as moths. Their bodies are generally brown in color.