Jumping Spider Shedding (Molting): Everything You Need to Know
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If you've noticed your jumping spider hiding away, refusing food, or spending days inside its web hammock, don't panic. Your spider is probably preparing to shed its exoskeleton, a process called molting.
Molting is one of the most important stages in a jumping spider's life. It allows them to grow, repair injuries, and eventually reach adulthood. While it can be worrying for new owners, it's completely natural and usually doesn't require any intervention.
What Is Molting?
Unlike mammals, jumping spiders have a hard outer skeleton called an exoskeleton. Because this shell can't grow, the spider must shed it and form a new, larger one as it develops. This process is known as molting (or ecdysis).
Young spiderlings may molt every few weeks, while older juveniles molt less frequently. Once a jumping spider reaches adulthood, it will usually not molt again.
Signs Your Jumping Spider Is About to Shed
Every spider is different, but common signs include:
- Refusing food for several days or even weeks.
- Spending much more time inside its silk hammock.
- Sealing the entrance to its hammock with extra silk.
- Becoming less active than usual.
- Colours appearing slightly duller before the molt.
These behaviours are perfectly normal and usually mean your spider is preparing for one of the most vulnerable stages of its life.
What Happens During a Molt?
Once ready, the spider carefully splits its old exoskeleton and slowly works its way out.
This can take anywhere from 30 minutes to several hours, depending on the spider's size and age. During this time, the spider is extremely delicate and should never be disturbed.
After emerging, the new exoskeleton is soft and flexible. Over the next few days it gradually hardens, allowing the spider to move, hunt and jump normally again.
How to Care for a Molting Jumping Spider
The best thing you can do is... leave it alone.
Here are a few simple tips:
- Do not handle your spider.
- Remove any live food from the enclosure.
- Continue providing fresh water droplets for drinking.
- Keep humidity at the appropriate level for your species.
- Avoid moving or vibrating the enclosure.
Many new keepers worry when their spider doesn't come out for a week or more. This is often completely normal.
When Should You Feed Again?
Wait until your spider has fully emerged from its hammock and is moving around confidently.
Its fangs also need time to harden before it can safely catch prey. Offering food too early can cause unnecessary stress and may even injure the spider.
Most keepers wait 2 to 5 days after the molt before offering appropriately sized prey, although younger spiders sometimes take a little longer.
Can Molting Be Dangerous?
Most molts happen without any problems, but it is the most vulnerable period in a jumping spider's life.
Problems are more likely if:
- The enclosure becomes too dry.
- The spider is disturbed during the molt.
- Live prey is left inside the enclosure.
- The spider is dehydrated.
Providing fresh water and a calm environment gives your spider the best chance of a successful shed.
Frequently Asked Questions
My spider hasn't eaten for a week. Is it sick?
Probably not. Food refusal is one of the most common signs of pre-molt.
My spider hasn't left its hammock.
This is also normal. Many jumping spiders stay hidden for several days before and after molting.
Can I help my spider shed?
No. Trying to assist almost always does more harm than good. The safest approach is to let nature take its course.
Will my spider be bigger afterwards?
Yes. Every successful molt allows a juvenile jumping spider to grow larger until it reaches adulthood.
Final Thoughts
Watching your jumping spider molt can be nerve-racking, especially the first time. Fortunately, it's a completely natural part of their life cycle.
Give your spider a quiet environment, keep fresh water available, avoid disturbing it, and be patient. Before long, you'll have a freshly molted spider that's bigger, stronger, and ready to explore again.