Polk County Conservation

Daddy Longlegs Spiders

  • I’ve heard a rumor that daddy longlegs are one of the most poisonous spiders in the world but their fangs are too short to bite humans? What’s the real story?

    I have also heard this rumor and it is not true! Part of the misunderstanding is that two different animals are referred to as Daddy longlegs. Daddy longlegs and daddy longlegs spiders belong to two separate groups of animals. Daddy longlegs, also known as Harvestmen, are arachnids but not spiders. They have only one body section that is segmented, two eyes, no silk, venom, or fangs. Harvestmen eat decomposing plant and animal material, small insects, and earthworms. Daddy longlegs spiders are also known as house spiders or cellar spiders. They build a messy, tangled web in dark corners in buildings, under rocks and loose bark. Daddy longlegs spiders do have small fangs, but so do brown recluse spiders and they are able to puncture human skin. There is no scientific research to prove daddy longlegs spider venom is deadly to humans. To learn more about spiders, check our Calendar page for October’s Spooky Spiders event.

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    Administration Office
    12130 NW 128th St
    Granger, IA 50109

    P: (515) 323-5300
    F: (515) 323-5354

    Monday – Friday, 8:00 a.m. – 4:30 p.m.

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