Bold Jumping Spider Size Explained & Compared With Other Spiders

Last Updated on April 10, 2023 by Amin Tawar

Bold Jumping Spider Length

Bold Jumping Spider Size

The common jumping spider of North America, Phidippus audax, is also known as the bold jumper or the bold jumping spider. 

These spiders are known as “bold jumping spiders” because of their bravery and fearlessness in taking on prey that is larger than themselves. 

Additionally, they can jump four times as far as their body length, which varies from 1/4 inch to 5/8 inch. Males are smaller than females in size. 

The P. audax is a black, hairy spider with a body length of 8 to 19 millimeters for females and 6 to 13 millimeters for males. 

Adults typically measure between 13 and 20 millimeters (0.5 and 0.79 inches) in length. On the top of the abdomen, there is a pattern of white, yellow, or orange spots. 

Male Bold Jumping spiders are between 6 and 13 mm in length, while females range in length from 8 to 15 mm. Moreover, the leg span of these spiders ranges from 0.39 inches – 0.91 inches (10-23 mm).

Bold Jumping Spider Centimeter Inches 
Body length1.3-2.0 cm0.5 and 0.79-inch
Leg span 0.1-2.3 cm 0.39 inch – 0.91 inches

Bold Jumping Spider Weight

While the length of the Bold Jumping spider gives us a two-dimensional image of the species, we can also look at the width and the weight of the spider. 

Jumping spiders do, in fact, have width, but these two are relatively small. The Bold Jumping spiders are said to have an average body width in the range of 0.98-2.56 inches (25-65 mm). 

In terms of its weight, the Bold jumping spider weighs about 13.5 mg on average for males and a little more on average for females. However, from one spider to the other, the weight may change slightly. 

Bold Jumping Spider Ounce Grams 
Weight 0.00047 ounces0.0135 g

Bold Jumping Spider Clutch Size

Jumping spiders that are bold give birth to their juveniles in clutches. The number of eggs the bold jumping spider lays at one time, or its clutch size, is approximately 125+ eggs. 

Bold Jumping Spider Size Compared To Human Hands

Bold Jumping Spider Size compared with human hand

Now that we know the size of the Bold jumping spider, let’s compare it with other and its own type of species to get a different perspective of their size. 

First of all, why don’t we compare it with ourselves? These species are so small that even if you hold them in your hands, they will look tiny. 

For instance, the average size of human hands is about 7.6 inches, while the overall length of the Bold jumping spiders is just about 0.5 and 0.79 inches which would not even match the size of our nails. 

Bold Jumping Spider Vs Regal Jumping Spider Size Comparison

Bold Jumping Spider Size compared with other spiders

The Regal spider is slightly larger than the Bold Jumping spider. Despite being a little bigger than the Bold Jumping Spider we just discussed, the Regal Spider rarely grows to be more than 34 mm. 

The females will have the same pattern of spots and stripes but will range in color from gray to bright orange. Males are always black with white spots and stripes.

Bold jumping spider adults typically measure between 13 and 20 millimeters (0.5 and 0.79 inches) in length. 

The adult males of the Regal jumping spiders, on the other hand, have body lengths that range from 6 to 18 mm (0.24-0.71 in) and an average of 12 mm. Females average 15 mm and range in size from 7 to 22 mm (0.28 to 0.87 in).

Spider type Body lengthLeg span Weight 
Bold Jumping Spider0.5 and 0.79 inch0.39 inch – 0.91 inch0.00047 ounces
Regal jumping spider 0.6-2.2 cm 

Bold Jumping Spider Vs Black Widow Spider Size Comparison

Due to their small, black bodies and relatively short legs, jumping spiders are frequently mistaken for black widow spiders. 

For instance, the female black widow measures 25–38 mm (1–1.5 in) in length. The male measures about 1.8 inches, which is about half the size of the female (3-4 mm). The average overall body length of a black widow varies from 3 to 10 mm. 

The Black widow spider’s leg span is also just under an inch long. The Black Widow Spider weighs approximately 0.035 ounces.

On the other hand, the Bold jumping spider is smaller. That is it has a smaller length, leg span, and weight. 

Spider type Body lengthLeg span Weight 
Bold Jumping Spider0.5 and 0.79 inches0.39 inch – 0.91 inches0.00047 ounces
Black widow spider 0.3-0.5 inches½ inch 0.035 ounces

Bold Jumping Spider Vs Tarantula Size Comparison

The tarantula clearly outweighs the other species in terms of size. The Goliath bird-eating tarantula is the largest of all tarantulas, which are among the largest spiders in the world. 

Brown tarantulas have large, heavy bodies and can have leg spans of over 4 inches. A tarantula’s adult weight can reach 3 oz. The Goliath can reach a maximum size of 11 inches in length, a 12-inch leg span, and 6 ounces of weight.

On the other hand, the Bold jumping spider is quite small. In terms of length, leg span, and weight, the Tarantula is insanely large. 

Spider type Body lengthLeg span Weight 
Bold Jumping Spider0.5 and 0.79 inches0.39 inch – 0.91 inches0.00047 ounces
Goliath Bird Eating Tarantula11 inches 12 inches 6-ounce 


And that was everything you need to know about the size of the Bold Jumping spider. I hope this article was helpful enough and you got something valuable from it.

Thank You For Reading!

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