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Southern House (Kukulcania hibernalis)

The Southern House Spider lives in many parts of America, from the north to the south. It’s quite a big spider! Interestingly, people often confuse the male Southern House Spider with another spider called the brown recluse because they look a lot alike.

Scientific Classification

Southern House Spider

Physical Description and Identification

Adults

  • Size: Females – 0.51 to 0.74 inches (13 to 19 mm) in length, larger in size than the males; Males 0.35 to 0.39 inches (9 to 10 mm)

Southern House Spider Size

  • Color: Displaying sexual dimorphism, the males and females differ in color. The males are brown or amber, while the females have a black, brown or charcoal grey body. Both sexes have light grey, velvety hair on their abdomen.

Female Southern House Spider

  • Other characteristic features: The females are also marked with a bulbous or ovoid-shaped abdomen that gets distended further post feeding as well as during pregnancy. Their carapace is filled with dusky patches. The males, on the other hand, possess a slender body along with long legs.

Eggs

About 200 eggs are laid at a time and they are approximately 15mm in size, loosely covered in a ball of silk, guarded closely by the mother in the burrow she dwells in.

Spiderlings

The spiderlings of this species are sociable, exhibiting traits like sibling recognition, as well as cooperating with others while capturing prey. They always remain in clusters be it after feeding or when dispersing from the mother spider on maturation.

Southern House Spiderlings

The Web

The webs of the Southern house spider are flat and tangled, having a woolly texture. Specialized webs are mostly spun by females as well as juveniles, generally spotted on bridges, barns, and houses and occasionally under the bark of a tree.

Southern House Spider Web

Southern House Spider vs. Brown Recluse

People often take the Southern house spider, particularly the males, for a brown recluse because of their similarity in color and shape. However, the Southern House Spider is comparatively bigger in size than the Brown Recluse and also does not have the prominent violin mark as seen in the latter.

Are Southern House Spiders Venomous?

Southern House Spiders do have venom, but it’s not considered harmful to humans.

Can Southern House Spiders Bite?

Yes, Southern House Spiders can bite, but they usually don’t unless they feel threatened. The bite might be a little painful but is generally not dangerous. Between the two sexes, the males are said to be the aggressive lot, though they do not bite right away unless bothered or trapped.

Southern House Spider Picture

Ecological Importance and Behavior of Southern House Spider

The Southern House Spider is an intriguing arachnid that plays a significant role in controlling the population of insects, thus maintaining a balanced ecosystem. These spiders exhibit nocturnal hunting behaviors, often waiting for prey within their webs, which allows them to manage the numbers of various household pests effectively.

Natural Predators: Despite their formidable appearance, Southern House Spiders fall prey to birds, reptiles, and larger species of spiders. The size and coloration of these spiders aid in camouflage, providing some defense against these natural threats.

Prey-Predator Dynamics: Equipped with potent venom, Southern House Spiders immobilize their prey, which includes flies, beetles, and cockroaches. This dynamic not only benefits the spiders in obtaining nourishment but also aids in keeping a check on pest populations that could otherwise become nuisances in human dwellings.

Relationship with Humans: Generally, Southern House Spiders are harmless to humans. Their presence in and around homes can be beneficial as they feed on common household insects. While their bite is not typically dangerous, it is advisable to avoid handling them to prevent any unwanted bites.

Southern House Spiders

Quick Facts

LifespanFemales live for approximately eight years; males have a much shorter life expectancy
DistributionThe southern part of North America, all over Central America, and Southern American countries like Uruguay and Brazil
HabitatThe male spiders are found in buildings on window sills, and shutters. The females are spotted under the bark of a tree as well as near bridges, houses, barns, and other human-made structures, where they spin their webs.
DietSmall insects like horseflies, house flies, cockroaches, and beetles.

Southern House Spider Image

Did You Know

  • The males are always on the move in search of prey or even female spiders during the mating seasons. The females, on the other hand, remain confined to their dwellings and only move in the need to get hold of the prey stuck in their web.
  • They have a lengthy mating ritual lasting for about an hour in which none of them would move for a considerable period of time.
  • These creatures tend to crawl upon anything alive or dead which comes in their path since they have eyesight so poor that they can’t see what is in front of them.
  • They have a tendency to play dead when threatened, a tactic used against their predators.

Kukulcania Hibernalis

In conclusion, the Southern House Spider serves as a natural pest control agent.

The Southern House Spider lives in many parts of America, from the north to the south. It’s quite a big spider! Interestingly, people often confuse the male Southern House Spider with another spider called the brown recluse because they look a lot alike.

Southern House Spider

Physical Description and Identification

Adults

  • Size: Females – 0.51 to 0.74 inches (13 to 19 mm) in length, larger in size than the males; Males 0.35 to 0.39 inches (9 to 10 mm)

Southern House Spider Size

  • Color: Displaying sexual dimorphism, the males and females differ in color. The males are brown or amber, while the females have a black, brown or charcoal grey body. Both sexes have light grey, velvety hair on their abdomen.

Female Southern House Spider

  • Other characteristic features: The females are also marked with a bulbous or ovoid-shaped abdomen that gets distended further post feeding as well as during pregnancy. Their carapace is filled with dusky patches. The males, on the other hand, possess a slender body along with long legs.

Eggs

About 200 eggs are laid at a time and they are approximately 15mm in size, loosely covered in a ball of silk, guarded closely by the mother in the burrow she dwells in.

Spiderlings

The spiderlings of this species are sociable, exhibiting traits like sibling recognition, as well as cooperating with others while capturing prey. They always remain in clusters be it after feeding or when dispersing from the mother spider on maturation.

Southern House Spiderlings

The Web

The webs of the Southern house spider are flat and tangled, having a woolly texture. Specialized webs are mostly spun by females as well as juveniles, generally spotted on bridges, barns, and houses and occasionally under the bark of a tree.

Southern House Spider Web

Southern House Spider vs. Brown Recluse

People often take the Southern house spider, particularly the males, for a brown recluse because of their similarity in color and shape. However, the Southern House Spider is comparatively bigger in size than the Brown Recluse and also does not have the prominent violin mark as seen in the latter.

Are Southern House Spiders Venomous?

Southern House Spiders do have venom, but it’s not considered harmful to humans.

Can Southern House Spiders Bite?

Yes, Southern House Spiders can bite, but they usually don’t unless they feel threatened. The bite might be a little painful but is generally not dangerous. Between the two sexes, the males are said to be the aggressive lot, though they do not bite right away unless bothered or trapped.

Southern House Spider Picture

Ecological Importance and Behavior of Southern House Spider

The Southern House Spider is an intriguing arachnid that plays a significant role in controlling the population of insects, thus maintaining a balanced ecosystem. These spiders exhibit nocturnal hunting behaviors, often waiting for prey within their webs, which allows them to manage the numbers of various household pests effectively.

Natural Predators: Despite their formidable appearance, Southern House Spiders fall prey to birds, reptiles, and larger species of spiders. The size and coloration of these spiders aid in camouflage, providing some defense against these natural threats.

Prey-Predator Dynamics: Equipped with potent venom, Southern House Spiders immobilize their prey, which includes flies, beetles, and cockroaches. This dynamic not only benefits the spiders in obtaining nourishment but also aids in keeping a check on pest populations that could otherwise become nuisances in human dwellings.

Relationship with Humans: Generally, Southern House Spiders are harmless to humans. Their presence in and around homes can be beneficial as they feed on common household insects. While their bite is not typically dangerous, it is advisable to avoid handling them to prevent any unwanted bites.

Southern House Spiders

Quick Facts

LifespanFemales live for approximately eight years; males have a much shorter life expectancy
DistributionThe southern part of North America, all over Central America, and Southern American countries like Uruguay and Brazil
HabitatThe male spiders are found in buildings on window sills, and shutters. The females are spotted under the bark of a tree as well as near bridges, houses, barns, and other human-made structures, where they spin their webs.
DietSmall insects like horseflies, house flies, cockroaches, and beetles.

Southern House Spider Image

Did You Know

  • The males are always on the move in search of prey or even female spiders during the mating seasons. The females, on the other hand, remain confined to their dwellings and only move in the need to get hold of the prey stuck in their web.
  • They have a lengthy mating ritual lasting for about an hour in which none of them would move for a considerable period of time.
  • These creatures tend to crawl upon anything alive or dead which comes in their path since they have eyesight so poor that they can’t see what is in front of them.
  • They have a tendency to play dead when threatened, a tactic used against their predators.

Kukulcania Hibernalis

In conclusion, the Southern House Spider serves as a natural pest control agent.