Jumping Spider Molting: Everything You Need To Know


As a pet owner, one of the most fascinating parts of owning jumping spiders is observing their molting process.

You might be familiar with the molting processes of other arachnids such as tarantulas, but watching your own pet spider shed its skin is an especially neat experience.

Not only can you watch them, but you’ll also get to observe how they have changed color patterns and grown bigger.

However, if you have had the pleasure yet, and you’re just researching to see what you can do when this happens, then you’re in the right place!

In this article, we will take an in-depth look into the molting process for jumping spiders. But, also share with you some tips on how to care for your spider while they are molting, and also the signs that your spider is at the molting stage.

Why Do Jumping Spiders Molt?

Before we get into the good stuff let’s first go over why jumping spiders molt. Jumping spiders, like all arachnids, go through this molting process for several reasons.


As jumping spiders grow, their rigid exoskeleton doesn’t expand with them. So, to accommodate their increasing size, they must periodically shed their old exoskeleton and replace it with a new, larger one.

This allows them to continue growing without being constrained by their outer covering.


If a jumping spider loses a limb or sustains an injury, molting can help regenerate the lost body part or repair damaged areas.

During the molting process, the spider can regrow missing limbs or other body parts, albeit smaller and less functional initially.

Over successive molts, the regenerated limbs will eventually reach their normal size and function.

Exoskeleton maintenance:

The exoskeleton of a jumping spider can become worn out over time, losing its strength and protective qualities.

Molting allows the spider to replace its old exoskeleton with a fresh, new one, ensuring continued protection and support for its body.

As you can see, molting is an essential process for jumping spiders. Not only does this allow them to grow but also helps them regenerate any limbs they may have lost.

This way they can continue to thrive and adapt to their ever-changing environments.

How Often Do Jumping Spiders Molt?

The frequency of molting in jumping spiders can vary and is influenced by factors such as age, size, species, and individual growth rates. Generally, jumping spiders molt every 3 to 4 weeks.

However, this timeline can differ for each spider based on their unique circumstances. For example, younger spiders, such as spiderlings and juveniles, grow rapidly and may molt more frequently than older spiders.

If you’re new to owning a pet jumping spider it’s essential to monitor their growth, behavior, and physical appearance to identify when it’s about to undergo a molt.

This will help you provide proper care and adjust their feeding schedule accordingly during this crucial process.

Stages Of Their Molting Process

The molting process in jumping spiders consists of several stages. Each stage plays a crucial role in the shedding of the old exoskeleton and the formation of a new one. Here are the main stages of the molting process:

Pre-Molt Stage

During this phase, the spider begins preparing for the upcoming molt. It may exhibit changes in behavior, such as reduced activity, loss of appetite, or seeking a secluded spot within its enclosure.

Internally, the spider starts secreting a new exoskeleton layer beneath the old one and creates a separation fluid that will later help it shed the old exoskeleton.

Molt Stage

This is the actual shedding phase when the spider removes its old exoskeleton. The spider’s body contracts and expands, causing the old exoskeleton to crack open, usually along the cephalothorax (the front part of the body).

The spider then slowly works its way out of the old exoskeleton, often using its legs and body movements to free itself completely.

Post-Molt Stage

After successfully shedding the old exoskeleton, the spider enters the post-molt stage. Its new exoskeleton is initially soft and vulnerable, making the spider more susceptible to injury or predation.

At this point, the spider will remain relatively inactive while its new exoskeleton hardens. This process can take several hours to a few days, depending on the spider’s size and environmental conditions such as humidity and temperature.

Once the new exoskeleton has hardened, the spider will resume its normal activities, including feeding and exploring its surroundings.

Overall, the molting process is an essential part of a jumping spider’s development. It allows them to grow and develop into healthy, mature spiders.

By understanding the stages of the molting process, spider owners can ensure that their pets are healthy and happy.

 jumping spider molting

Signs Your Jumping Spider Is About To Molt

Jumping spiders go through a molting process as they grow and mature. It is essential to know when your spider is about to molt so that you can ensure it has a safe and stress-free environment during the process.

Here are some signs that your jumping spider is about to molt:

  • Reduced Appetite: If your jumping spider is eating less than usual, it may be a sign that it is preparing for molting. During the pre-molt stage, the spider’s body will absorb as much moisture and nutrients as possible, and it may not be interested in food.
  • Lethargy: Your jumping spider may become less active and move around less in the days leading up to molting. It may spend more time in its web hammock or hiding in a corner of its enclosure.
  • Dull Colors: Before molting, the spider’s exoskeleton will become dull and fade. The colors will appear less vibrant. This is because the spider is absorbing fluids and nutrients to prepare for molting.
  • Larger Abdomen: As the spider prepares for molting, its abdomen will become larger and more rounded. This is because the spider is storing fluids and nutrients for the molting process.

If you notice any of these signs, it is essential to monitor your jumping spider closely and ensure that it has a safe and stress-free environment for molting.

Avoid handling the spider during this time, as it may cause unnecessary stress and harm. Once the molting process is complete, your jumping spider will emerge with a new exoskeleton, ready to take on the world.

How To Care For Your Jumping Spider During Molting?

Molting is a crucial process for a jumping spider, as it allows it to grow and shed its old exoskeleton. During this time, it is important to provide the right care to ensure a smooth and successful molting process.

Here are some tips on how to care for your jumping spider during molting:

Caring for your jumping spider during the molting process is crucial to ensure a successful molt and maintain the spider’s overall health. Here are some essential care tips to help your jumping spider during molting:

Provide a stress-free environment:

Jumping spiders are vulnerable during molting, so it’s crucial to minimize any potential stress. Keep the spider’s enclosure in a quiet area, away from disturbances such as loud noises or excessive movement.

Ensure proper humidity levels:

Maintaining adequate humidity levels in the spider’s enclosure is essential for a successful molt. The humidity helps soften the old exoskeleton, making it easier for the spider to shed it. You can use a spray bottle to mist the enclosure lightly or provide a small water dish to maintain humidity. However, avoid over-misting, as excessive humidity can lead to other issues like mold growth.

Avoid handling or feeding:

During the molting process, your jumping spider will be more fragile due to its soft new exoskeleton. Refrain from handling or feeding the spider during this time to prevent potential injuries. Once the spider has completed its molt and the new exoskeleton has hardened, you can resume regular handling and feeding.

Monitor the spider’s progress:

Keep an eye on your jumping spider throughout the molting process to ensure everything goes smoothly. Check for any signs of complications, such as stuck exoskeleton pieces, and address them promptly if needed.

Give the spider space:

It’s essential to give your jumping spider enough space to molt properly. Ensure that the enclosure has ample room for the spider to maneuver and shed its old exoskeleton without any obstructions.

By following these care tips, you can help your jumping spider successfully complete its molting process and maintain its overall health and well-being. Remember that each spider is unique, so it’s essential to monitor your pet and adjust its care as needed.

Potential Molting Complications and Solutions

Molting is a natural process that all spiders go through to grow and shed their old exoskeleton.

However, there are potential complications that can arise during the molting process that may require intervention. Here are some common complications and solutions:



Mismolting occurs when the spider is unable to shed its old exoskeleton completely, leaving it trapped and vulnerable. This can happen due to dehydration, lack of nutrients, or other health issues. If left untreated, the spider may die from infection or starvation.

Incomplete Molting:

Incomplete molting occurs when the spider is unable to shed its old exoskeleton completely, but is not trapped. This can happen due to improper humidity levels or other environmental factors. If left untreated, the spider may become deformed or vulnerable to predators.


Provide a Humid Environment:

Spiders require a humid environment to properly molt. Providing a moist substrate, such as damp sphagnum moss or vermiculite, can help prevent complications such as miss-molting and incomplete molting.

Provide Adequate Nutrition:

Spiders require adequate nutrition to properly molt. Feeding them a varied diet of live insects, such as crickets or mealworms, can help ensure they have the nutrients they need to molt successfully.

Monitor the Molting Process:

It’s important to monitor the molting process closely to ensure that the spider is shedding its old exoskeleton completely and without complications. If any issues arise, such as mis-molting or incomplete molting, seek veterinary care immediately.

While molting is a natural process for spiders, there are potential complications that can arise. By providing a humid environment, adequate nutrition, and monitoring the molting process closely, these complications can be prevented or treated.


So there you have it, now you know everything there is to know about jumping spiders molting. Don’t forget if you want to know more about jumping spiders we have a whole category on the home page you might find interesting.

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