Home / Huntsman Spiders / Rain Spider (Palystes superciliosus)

Rain Spider (Palystes superciliosus)

The common rain spider is a type of huntsman spider. Guess where it’s mostly found? In many parts of South Africa! These spiders are pretty interesting, and we’re going to share some cool things about them right here.

Scientific Classification

Rain Spider

Physical Description and Identification

Adults

  • Size: These spiders are 15mm to 36mm in length, and also have a leg span of about 110mm.
  • Color: Like most other species of the huntsman family, the prominent shades they come in may be brown or even grey. The underside of their legs has bands of black and yellow.
Rain Spider Size

Eggs

The egg sac is round, made using silk, and protected with leaves and twigs. The female takes 3 to 5 hours to construct these egg sacs and guards them till the spiderlings are hatched from it.

Spiderlings

They remain in the protective shell of their mother for about 3 to 4 weeks after hatching and then they leave their shelter to be on their own.

Baby Rain Spider

Photo Credit: Derek Keats

The Web

Not much information is available regarding their web, but in this regard, they could take after other species in the huntsman spiders family and not build webs but hunt around for food.

Are Rain Spiders Venomous?

Yes, Rain spiders have venom. They use it mainly to help them grab their meals. But for humans, it’s not very strong. In 1959, scientists tested if this spider’s venom was dangerous. They let it bite a guinea pig’s nose, and the guinea pig passed away in 7 minutes. But when they tried again with a sleepy guinea pig, it was okay. So, they thought the first guinea pig was shocked to death, not poisoned.

Can Rain Spiders Bite?

They can bite if they feel bothered. The bite might feel a bit pinchy or itchy, but most people don’t find it too bad.

Rain Spider Picture

Ecological Importance and Behavior of Rain Spider

The common rain spider plays a vital role in maintaining the ecological balance within its habitat. By preying on various insects and small lizards, it helps control pest populations, contributing to a healthier environment. Their nocturnal nature and agility make them excellent hunters, and their presence is a clear indicator of a robust ecosystem.

Natural Predators: In the wild, the common rain spider is not without its adversaries. The pompilid wasp is a formidable foe, capable of paralyzing the spider with a precise sting. Birds also pose a significant threat.

Prey-Predator Dynamics: These dynamics highlight the fragile balance in nature’s web of life, showcasing the spider’s resilience and adaptability.

Relationship with Humans: While their appearance might startle some, rain spiders are generally harmless to humans. Misunderstandings and lack of knowledge can lead to unnecessary fear, but with education and awareness, we can foster a more harmonious coexistence. These spiders, in turn, contribute to controlling insect populations around human habitation, making them silent allies in our daily lives.

Quick Facts

LifespanApproximately 2 years
DistributionThroughout South Africa ranging from the KwaZulu-Natal (east); Limpopo, Mpumalanga, and North West (north); Western Cape, Easter Cape (south)
Habitat Scrublands and woodlands
Common Predators Pompilid wasp (that is known to paralyze spider by stinging them), and birds
Diet Crickets, lizards (mostly geckos), cockroaches, moths, and other large-sized insects
Rain Spider Image

Did You Know

  • Ludwig Carl Christian Koch, a famous German arachnologist described this species for the first time in 1875.
  • It is often known to be seen just before the rains set in, which might be the reason behind its name.
  • The mother rain spiders are extremely protective of their little ones while constructing egg sacs and are known to have bitten a lot of gardeners during this phase when the latter may have tried to disturb them.

In conclusion, the common rain spider, with its impressive size, hunting prowess, and intricate life cycle, stands as a fascinating subject in the world of arachnology.

The common rain spider is a type of huntsman spider. Guess where it’s mostly found? In many parts of South Africa! These spiders are pretty interesting, and we’re going to share some cool things about them right here.

Rain Spider

Physical Description and Identification

Adults

  • Size: These spiders are 15mm to 36mm in length, and also have a leg span of about 110mm.
  • Color: Like most other species of the huntsman family, the prominent shades they come in may be brown or even grey. The underside of their legs has bands of black and yellow.
Rain Spider Size

Eggs

The egg sac is round, made using silk, and protected with leaves and twigs. The female takes 3 to 5 hours to construct these egg sacs and guards them till the spiderlings are hatched from it.

Spiderlings

They remain in the protective shell of their mother for about 3 to 4 weeks after hatching and then they leave their shelter to be on their own.

Baby Rain Spider

Photo Credit: Derek Keats

The Web

Not much information is available regarding their web, but in this regard, they could take after other species in the huntsman spiders family and not build webs but hunt around for food.

Are Rain Spiders Venomous?

Yes, Rain spiders have venom. They use it mainly to help them grab their meals. But for humans, it’s not very strong. In 1959, scientists tested if this spider’s venom was dangerous. They let it bite a guinea pig’s nose, and the guinea pig passed away in 7 minutes. But when they tried again with a sleepy guinea pig, it was okay. So, they thought the first guinea pig was shocked to death, not poisoned.

Can Rain Spiders Bite?

They can bite if they feel bothered. The bite might feel a bit pinchy or itchy, but most people don’t find it too bad.

Rain Spider Picture

Ecological Importance and Behavior of Rain Spider

The common rain spider plays a vital role in maintaining the ecological balance within its habitat. By preying on various insects and small lizards, it helps control pest populations, contributing to a healthier environment. Their nocturnal nature and agility make them excellent hunters, and their presence is a clear indicator of a robust ecosystem.

Natural Predators: In the wild, the common rain spider is not without its adversaries. The pompilid wasp is a formidable foe, capable of paralyzing the spider with a precise sting. Birds also pose a significant threat.

Prey-Predator Dynamics: These dynamics highlight the fragile balance in nature’s web of life, showcasing the spider’s resilience and adaptability.

Relationship with Humans: While their appearance might startle some, rain spiders are generally harmless to humans. Misunderstandings and lack of knowledge can lead to unnecessary fear, but with education and awareness, we can foster a more harmonious coexistence. These spiders, in turn, contribute to controlling insect populations around human habitation, making them silent allies in our daily lives.

Quick Facts

LifespanApproximately 2 years
DistributionThroughout South Africa ranging from the KwaZulu-Natal (east); Limpopo, Mpumalanga, and North West (north); Western Cape, Easter Cape (south)
Habitat Scrublands and woodlands
Common Predators Pompilid wasp (that is known to paralyze spider by stinging them), and birds
Diet Crickets, lizards (mostly geckos), cockroaches, moths, and other large-sized insects
Rain Spider Image

Did You Know

  • Ludwig Carl Christian Koch, a famous German arachnologist described this species for the first time in 1875.
  • It is often known to be seen just before the rains set in, which might be the reason behind its name.
  • The mother rain spiders are extremely protective of their little ones while constructing egg sacs and are known to have bitten a lot of gardeners during this phase when the latter may have tried to disturb them.

In conclusion, the common rain spider, with its impressive size, hunting prowess, and intricate life cycle, stands as a fascinating subject in the world of arachnology.