If you have ever wondered what a spider specialist is called, the quick answer is an arachnologist.
You may also hear araneologist, which refers specifically to those who study spiders, while arachnologist is the broader scientific term for someone who studies spiders and other arachnids.

A spider expert usually studies the details of spider life, including body shape and behavior.
They also look at habitat and ecology, so the right name depends on how broad their focus is.
The study of spiders is part of a larger field that includes scorpions, ticks, mites, and other arachnids.
The Exact Term For A Spider Specialist

The exact term you are most likely to use is arachnologist.
Merriam-Webster defines an arachnologist as a person who specializes in the study of spiders and other arachnids, making it the most common scientific label for this job.
Araneologist As The Spider-Only Term
If you want the spider-only term, araneologist is the narrower word.
Merriam-Webster defines araneologist as a specialist in the study of spiders, so this word fits when you want to keep the focus just on spiders.
Arachnologist As The Broader Scientific Term
Arachnologist is the term you will hear more often in science and education.
It comes from arachnology, the study of arachnids, which includes spiders and related animals such as scorpions, ticks, and mites.
How The Terminology Fits Together

These words can feel confusing at first because they overlap.
The key is to separate spiders from the larger arachnid group, and to remember that spider study is part of zoology, not entomology.
The Difference Between Spiders And Other Arachnids
Spiders make up one branch of the arachnid family.
Arachnids also include scorpions, mites, ticks, and harvestmen, so someone who studies all of them uses a broader title than someone who studies spiders alone.
Why People Mix Up Arachnology And Entomology
People often mix up arachnology and entomology because both deal with small animals and outdoor pests.
Entomology is the study of insects, while arachnology focuses on spiders and other arachnids, so the two fields are related but not the same.
The Origin Of The Word Arachne
The word arachnology traces back to Arachne, a figure from Greek myth whose name became linked with spiders.
That history helps explain why the root appears in so many spider-related words today.
What These Scientists Actually Study

A spider specialist does more than name species.
The work often includes sorting spider types, watching behavior, and studying how spiders fit into natural systems, including their role in ecology.
Classification Behavior And Identification
Arachnologists identify spider species by features like body shape, eye pattern, silk use, and leg structure.
They also observe behavior, such as hunting style, web building, mating, and how spiders respond to threats.
Habitats Food Webs And Ecology
Researchers study where spiders live and how they affect local ecosystems.
Spiders help control insects.
Their place in food webs shows how healthy a habitat is, which makes their study useful in field research and conservation.