Home / Funnel Weaver Spiders / Giant House (Eratigena atrica)

Giant House (Eratigena atrica)

Discover fascinating details about the Giant house spiders! Part of the Eratigena genus, these spiders may have a large appearance, but they’re actually quite harmless. They have simple eyesight, only distinguishing between light and shadow. True to their name, these spiders often make our homes their own.

Scientific Classification

Giant House Spider

Physical Description  and Identification

Adults

  • Size: Females are around 0.7 in (18 mm) while males are 0.39-0.59 in (10-15 mm). The leg span of females is around 2 inches (45-50 mm) while males have 0.9 in-3 in (25-75 mm).
  • Color: The entire body is beige, brown, or orange with the sternum having three beige, gray, or brown dots on its two sides. The posterior or the opisthosoma has a line with six dots on each side.
  • Other Characteristic Features: The legs, abdomen, and palps are hairy. Eight eyes are settled in two rows and all are of the same size.

Giant House Spider Size

Eggs

40-60 eggs are released in a single sac.

Spiderlings

All spiderlings stay together for around a month. Each of them goes through the molting phase at least 8-10 times before becoming mature.

Giant House Spiderlings

Are Giant House Spiders Venomous?

Yes, Giant House Spiders are venomous, but their venom is not harmful to humans.

Can Giant House Spiders Bite?

Yes, they can bite, but it’s rare. If they do bite, it’s usually not severe and is similar to a bee sting. The pain of agatoxin doesn’t generally last for more than a couple of hours.

Giant House Spider Image

Ecological Importance and Behavior of Giant House Spider

Giant House Spiders play a crucial role in regulating insect populations, acting as natural pest controllers in our homes. Their presence contributes to a balanced ecosystem, even within human dwellings. They exhibit a nocturnal lifestyle, actively hunting their prey during the night and retreating to their funnel-shaped webs during the day.

Natural Predator: Despite their size, Giant House Spiders are not without their threats. Birds and larger arachnids stand as their natural predators, keeping their population in check.

Prey-Predator Dynamics: Their hunting prowess, combined with their intricate web design, establishes them as effective predators of insects, helping to maintain a harmonious balance in their chosen habitats.

Relationship with Humans: The relationship between humans and Giant House Spiders is a fascinating one. While their presence in our homes may be unnerving to some, they contribute positively by reducing the number of pests. Educating the public on the harmless nature of these spiders can foster a mutualistic coexistence, reducing unfounded fears and promoting a better understanding of their role in our environment.

Quick Facts

DistributionNorthern Africa, Central Asia, and Europe
HabitatRocks or caves of dry forests
Web TypeFunnel-web
Poison FactNon-toxic to Human
DietBlowflies, fruit flies, moths, wasps,
Mode of ReproductionOviparous
Number of EggsAround 60
Lifespan2-3 years, sometimes around 6 years
IUCN Conservation StatusNot listed

Giant House Spider Web

Picture of a Giant House Spider

Did You Know

  • The giant house spider was once enlisted in the Guinness Book of World Records for its speed (1.18 mph).
  • It is often confused with another spider species namely hobo spider due to their similar appearance.
  • The giant house spider was previously included in the genus known as Tegenaria.

In wrapping up, the Giant House Spider stands as a testament to the intricate balance of nature, showcasing how even the most unlikely of species can find a home amidst human civilization.

Discover fascinating details about the Giant house spiders! Part of the Eratigena genus, these spiders may have a large appearance, but they’re actually quite harmless. They have simple eyesight, only distinguishing between light and shadow. True to their name, these spiders often make our homes their own.

Giant House Spider

Physical Description  and Identification

Adults

  • Size: Females are around 0.7 in (18 mm) while males are 0.39-0.59 in (10-15 mm). The leg span of females is around 2 inches (45-50 mm) while males have 0.9 in-3 in (25-75 mm).
  • Color: The entire body is beige, brown, or orange with the sternum having three beige, gray, or brown dots on its two sides. The posterior or the opisthosoma has a line with six dots on each side.
  • Other Characteristic Features: The legs, abdomen, and palps are hairy. Eight eyes are settled in two rows and all are of the same size.

Giant House Spider Size

Eggs

40-60 eggs are released in a single sac.

Spiderlings

All spiderlings stay together for around a month. Each of them goes through the molting phase at least 8-10 times before becoming mature.

Giant House Spiderlings

Are Giant House Spiders Venomous?

Yes, Giant House Spiders are venomous, but their venom is not harmful to humans.

Can Giant House Spiders Bite?

Yes, they can bite, but it’s rare. If they do bite, it’s usually not severe and is similar to a bee sting. The pain of agatoxin doesn’t generally last for more than a couple of hours.

Giant House Spider Image

Ecological Importance and Behavior of Giant House Spider

Giant House Spiders play a crucial role in regulating insect populations, acting as natural pest controllers in our homes. Their presence contributes to a balanced ecosystem, even within human dwellings. They exhibit a nocturnal lifestyle, actively hunting their prey during the night and retreating to their funnel-shaped webs during the day.

Natural Predator: Despite their size, Giant House Spiders are not without their threats. Birds and larger arachnids stand as their natural predators, keeping their population in check.

Prey-Predator Dynamics: Their hunting prowess, combined with their intricate web design, establishes them as effective predators of insects, helping to maintain a harmonious balance in their chosen habitats.

Relationship with Humans: The relationship between humans and Giant House Spiders is a fascinating one. While their presence in our homes may be unnerving to some, they contribute positively by reducing the number of pests. Educating the public on the harmless nature of these spiders can foster a mutualistic coexistence, reducing unfounded fears and promoting a better understanding of their role in our environment.

Quick Facts

DistributionNorthern Africa, Central Asia, and Europe
HabitatRocks or caves of dry forests
Web TypeFunnel-web
Poison FactNon-toxic to Human
DietBlowflies, fruit flies, moths, wasps,
Mode of ReproductionOviparous
Number of EggsAround 60
Lifespan2-3 years, sometimes around 6 years
IUCN Conservation StatusNot listed

Giant House Spider Web

Picture of a Giant House Spider

Did You Know

  • The giant house spider was once enlisted in the Guinness Book of World Records for its speed (1.18 mph).
  • It is often confused with another spider species namely hobo spider due to their similar appearance.
  • The giant house spider was previously included in the genus known as Tegenaria.

In wrapping up, the Giant House Spider stands as a testament to the intricate balance of nature, showcasing how even the most unlikely of species can find a home amidst human civilization.