My Spider Isn't Building Webs

Understanding Silk Production in Jumping Spiders

One of the most common concerns among new jumping spider keepers is the belief that their spider isn't making enough webbing.

After setting up a beautiful enclosure, many keepers expect to see elaborate webs appear throughout the habitat. Days pass, sometimes even weeks, and the spider seems perfectly healthy—but very little silk is visible.

Naturally, concern begins to set in.

The good news is that jumping spiders are not web-building spiders in the traditional sense. Unlike orb weavers, funnel weavers, or cobweb spiders, jumping spiders do not create large prey-catching webs.

In fact, many healthy jumping spiders produce surprisingly little visible silk.

Understanding how jumping spiders use silk can help determine whether a lack of webbing is completely normal or a sign that something deserves closer attention.

First: Jumping Spiders Are Not Web Builders

Jumping spiders belong to a group of active hunters.

Rather than trapping prey in webs, they:

  • Stalk prey visually

  • Ambush insects

  • Leap to capture meals

  • Use silk primarily for safety and shelter

Because of this lifestyle, they simply do not need large webs.

A healthy jumper may produce very little visible silk outside of specific situations.

How Jumping Spiders Use Silk

Jumping spiders use silk for several purposes.

Sleeping Hammocks

Their most common use of silk.

Molting Retreats

Protective chambers used during molts.

Egg Sacs

Constructed by mature females.

Safety Lines

Silk draglines used while climbing and jumping.

Temporary Shelters

Small retreats built for resting.

Most of this silk remains concentrated in small areas rather than spread throughout the enclosure.

Has Your Spider Recently Arrived?

Newly acquired spiders often take time to settle in.

A recently arrived spider may spend several days:

  • Exploring

  • Observing

  • Adjusting to new conditions

Before committing to a location for a hammock.

Many spiders will not immediately begin building after arrival.

This is completely normal.

Is the Spider Still Exploring?

A spider that constantly moves throughout the enclosure may simply be evaluating its surroundings.

Before constructing a retreat, many jumpers spend time:

  • Testing surfaces

  • Exploring climbing areas

  • Identifying safe locations

Once a preferred area is chosen, web-building often follows.

Does the Enclosure Provide Anchor Points?

Silk requires attachment points.

Enclosures with very few textured surfaces may make retreat construction more difficult.

Helpful features include:

  • Cork bark

  • Branches

  • Vines

  • Artificial foliage

  • Decorative hides

  • Textured surfaces

The more suitable anchor points available, the easier it becomes for a spider to establish a retreat.

Is the Spider Mature?

Adult spiders often establish routines.

Some mature individuals may:

  • Use the same retreat repeatedly

  • Produce minimal new silk

  • Expand existing hammocks rather than build new ones

A lack of visible webbing does not necessarily indicate inactivity.

Is the Spider Premolt?

Premolt often causes a dramatic increase in web-building activity.

A spider preparing to molt may:

  • Reinforce an existing hammock

  • Build a thicker retreat

  • Seal portions of the structure

If your spider has not yet entered premolt, extensive webbing may simply not be necessary.

What Does a Healthy Hammock Look Like?

A typical jumping spider hammock is:

  • Small

  • Dense

  • White or translucent

  • Located near the top of the enclosure

It often resembles a tiny silk sleeping bag rather than a traditional spider web.

Many new keepers overlook hammocks because they are much smaller than expected.

My Spider Only Built One Hammock

This is often completely normal.

Many spiders:

  • Find a preferred location

  • Build a retreat

  • Continue using it for extended periods

A spider does not need multiple hammocks to be healthy.

My Spider Keeps Changing Hammocks

This is also normal.

Some individuals build:

  • Temporary retreats

  • Seasonal retreats

  • Multiple resting locations

Personality differences often influence web-building behavior.

What About Silk Draglines?

Even spiders that appear to build very little webbing often produce silk constantly.

Whenever a jumping spider climbs or jumps, it frequently leaves behind:

Draglines

These thin safety lines are often nearly invisible unless viewed under certain lighting conditions.

Your spider may be producing more silk than you realize.

Can Humidity Affect Web Building?

Indirectly, yes.

Poor environmental conditions may influence:

  • Activity levels

  • Comfort

  • Retreat selection

Review:

  • Ventilation

  • Hydration

  • Temperature

  • General husbandry

if unusual behavior accompanies the lack of webbing.

When Should You Be Concerned?

A lack of webbing alone is rarely a problem.

However, additional symptoms may warrant closer observation:

  • Severe lethargy

  • Inability to climb

  • Persistent stress behaviors

  • Significant weight loss

  • Repeated falls

In these situations, evaluate overall husbandry conditions rather than focusing solely on silk production.

Common Beginner Mistakes

Expecting Orb Weaver Webs

Jumping spiders do not build prey-catching webs.

Destroying Existing Hammocks

A hammock is an important retreat and should be left intact whenever possible.

Assuming No Visible Silk Means No Silk

Many draglines are nearly invisible.

Rearranging the Enclosure Too Frequently

Constant changes may discourage a spider from settling.

Signs Everything Is Probably Fine

Your spider is likely doing well if it:

✓ Climbs normally

✓ Hunts successfully

✓ Maintains healthy body condition

✓ Builds at least occasional retreats

✓ Responds to movement and stimuli

✓ Displays normal activity

In these cases, limited webbing is usually nothing to worry about.

The Tiny Coven Approach

At Tiny Coven Jumpers, we encourage keepers to remember that jumping spiders are hunters first and web builders second.

Their silk serves a purpose.

A hammock for sleeping.

A retreat for molting.

A dragline for safety.

Unlike traditional web-building spiders, they do not measure success by the size of their webs.

And neither should we.

A Keeper's Rule of Thumb

A healthy jumping spider doesn't need a large web.

If your spider is climbing, hunting, exploring, and maintaining a healthy body condition, a lack of visible webbing is usually perfectly normal.

Sometimes the most important thing to remember is that jumping spiders are not trying to build impressive webs.

They're simply trying to be jumping spiders.