Debunking the Daddy Longlegs Myth: Are They Really the Most Venomous?

Infographic with two images of Daddy Long Legs. Text reads: Myth/Fact

Have you ever heard the myth that daddy longlegs are the most venomous spiders in the world but can't harm humans because their fangs are too small? It's a common misconception that's been circulating for years. In this blog, we're going to shed light on the truth about daddy longlegs, their venom, and why they are not a threat to us. Let's unravel this fascinating arachnid mystery.


The Daddy Longlegs Myth


Daddy Longlegs are the Most Venomous Spiders


While they do produce venom, daddy longlegs have very small fangs and are not considered dangerous to humans.


Daddy Longlegs vs. True Spiders

First, let's clarify what daddy longlegs are. They are not spiders in the same sense as, say, tarantulas or black widows. Daddy longlegs belong to the order Opiliones, while true spiders belong to the order Araneae. One significant difference lies in their body structure. Daddy longlegs have a single fused body part (cephalothorax and abdomen), whereas true spiders have a distinct separation between these parts.


Understanding Daddy Longlegs Venom

It's true that daddy longlegs produce venom. However, the venom's purpose differs from that of true spiders. Daddy longlegs primarily use their venom for subduing and digesting small prey, such as insects and other tiny organisms. Their venom contains enzymes that break down their prey's body, making it easier to consume.


The Fang Size Dilemma

The myth about daddy longlegs being dangerously venomous but unable to harm humans is based on their tiny fangs. It's claimed that their fangs are too short to pierce human skin, rendering them harmless. While it's true that daddy longlegs have small mouthparts, the idea that they are the most venomous spiders is not accurate.


Debunking the Myth

Here's the reality: daddy longlegs are not even close to being the most venomous spiders. In fact, they are not considered medically significant to humans. Even if their fangs could pierce human skin (which they typically can't), their venom is not potent enough to cause harm. There's no scientific evidence to support the notion that they are a danger to us.



The myth of daddy longlegs being the most venomous but harmless spiders is an interesting story, but it's far from accurate. These arachnids play a valuable role in ecosystems by controlling smaller pests. While their venom serves them well in capturing prey, it poses no threat to humans due to their tiny fangs. So, the next time you come across a daddy longlegs, you can rest assured that it's not a secret danger lurking in your home.


In the world of spiders and arachnids, there's always more to discover. If you have concerns about any spider species in your home, including daddy longlegs, and want expert advice or assistance, feel free to contact Paragon Pest Control. We're here to help you maintain a pest-free and comfortable living environment.