What is the smallest arthropod ?
The smallest arthropod known today is Stygotantulus stocki, a microscopic crustacean measuring under 0.1 mm. Its ecological role is that of an ectoparasite living on other tiny crustaceans.
What Stygotantulus stocki is?
It belongs to a group of tiny crustaceans called Tantulocarida. Adults measure less than 0.1 mm—about the width of a human hair divided by 7. It is considered the smallest arthropod ever recorded.
Ecological Role
Stygotantulus stocki lives as an ectoparasite on harpacticoid copepods, which are themselves tiny crustaceans found in marine environments. It attaches to its host and feeds on its bodily resources.
Even though it’s tiny, it plays a role in:
- Regulating populations of small copepods
- Maintaining balance in microscopic marine ecosystems
- Showing evolutionary miniaturization, helping scientists understand how small complex animals can become
You may also like to know which insect has the longest lifespan : Which Insect Has the Longest Lifespan? (Live for Decades)
Our learning resources
- Our Gumroad shop : https://arthropodinfo.gumroad.com/
- Dangerousness of arachnids ebook : https://arthropodinfo.gumroad.com/l/dangerousness-of-arachnids
