Steatoda

Meet the Steatoda spiders! They’re part of the cobweb spider family and there are around 120 different types. Some, like the Steatoda borealis, look a lot like widow spiders. But don’t be fooled! Even though they look similar, Steatoda spiders aren’t as harmful to humans. Ready to discover more about them?

Scientific Classification

Steatoda Castanea

Spiders Belonging to this Genus

  • Steatoda adumbrata
  • Steatoda aethiopica
  • Steatoda alamosa
  • Steatoda alboclathrata
  • Steatoda albomaculata
  • Steatoda ancora
  • Steatoda ancorata
  • Steatoda andina
  • Steatoda apacheana
  • Steatoda atascadera
  • Steatoda atrocyanea
  • Steatoda autumnalis
  • Steatoda badia
  • Steatoda bertkaui
  • Steatoda bipunctata
  • Steatoda borealis
  • Steatoda capensis
  • Steatoda carbonaria
  • Steatoda caspia
  • Steatoda castanea
  • Steatoda chinchipe
  • Steatoda cingulata
  • Steatoda connexa
  • Steatoda craniformis
  • Steatoda dahli
  • Steatoda diamantina
  • Steatoda distincta
  • Steatoda ephippiata
  • Steatoda erigoniformis
  • Steatoda fagei
  • Steatoda fallax
  • Steatoda felina
  • Steatoda foravae
  • Steatoda grandis
  • False Black Widow (Steatoda grossa)
  • Steatoda gui
  • Steatoda hespera
  • Steatoda hui
  • Steatoda iheringi
  • Steatoda incomposita
  • Steatoda kiwuensis
  • Steatoda kuytunensis
  • Steatoda latifasciata
  • Steatoda lawrencei
  • Steatoda leonardi
  • Steatoda lepida
  • Steatoda linzhiensis
  • Steatoda livens
  • Steatoda longurio
  • Steatoda mainlingensis
  • Steatoda mainlingoides
  • Steatoda marmorata
  • Steatoda marta
  • Steatoda maura
  • Steatoda mexicana
  • Steatoda micans
  • Steatoda minima
  • Steatoda moerens
  • Steatoda moesta
  • Steatoda morsitans
  • Steatoda nahuana
  • Steatoda nasata
  • Steatoda ngipina
  • Steatoda nigrimaculata
  • Steatoda nigrocincta
  • Steatoda niveosignata
  • False Widow (Steatoda nobilis)
  • Steatoda octonotata
  • Steatoda palomara
  • Steatoda pardalia
  • Steatoda paykulliana
  • Steatoda pengyangensis
  • Steatoda perakensis
  • Steatoda perspicillata
  • Steatoda picea
  • Steatoda porteri
  • Steatoda punctulata
  • Steatoda quadrimaculata
  • Steatoda quaesita
  • Steatoda quinquenotata
  • Steatoda retorta
  • Steatoda rhombifera
  • Steatoda rubrocalceolata
  • Steatoda rufoannulata
  • Steatoda sabulosa
  • Steatoda sagax
  • Steatoda saltensis
  • Steatoda seriata
  • Steatoda singoides
  • Steatoda sordidata
  • Steatoda speciosa
  • Steatoda spina
  • Steatoda subannulata
  • Steatoda terastiosa
  • Steatoda terebrui
  • Steatoda tigrina
  • Steatoda tortoisea
  • Steatoda transversa
  • Steatoda trianguloides
  • Triangulate Cobweb (Steatoda triangulosa)
  • Steatoda tristis
  • Steatoda truncata
  • Steatoda ulleungensis
  • Steatoda uncata
  • Steatoda variabilis
  • Steatoda variata
  • Steatoda variipes
  • Steatoda vaulogeri
  • Steatoda venator
  • Steatoda violacea
  • Steatoda wangi
  • Steatoda wanshou
  • Steatoda washona
  • Steatoda xerophila
  • Steatoda xishuiensis

Steatoda Grossa

Physical Description and Identification

Adults

  • Size: Females are 0.23-0.59 inches (0.58-1.49 cm), and males are 0.19-0.43 inches (0.48- 1.09 cm). The size varies from one species to the other, but males are smaller than females.
  • Color: The color varies from pale brown to black to reddish plum.
  • Other Characteristic Features: They have an oval-shaped abdomen with white, beige, or orange markings that remain partially visible, merging to form a crescent or a triangle.

Steatoda paykulliana of this genus has an orange or reddish marking on its back, which compels people to take it for the highly venomous redback spider.

Eggs

The eggs of most species of this genus could be pale yellow, cream, or even whitish. The shapes also vary from round to oval or even spherical.

Spiderlings

Most of the spiderlings like those of the Steatoda grossa detach from their mother immediately after dispersal,

The Web

They build webs in dark and secured places that are tangled and three-dimensional, comprising sticky silken fibers joined in an irregular fashion.

Are Steatoda Spiders Venomous?

Yes, Steatoda spiders have venom. However, it’s not as strong as some other spiders, like widow spiders. Some species of this genus, like the Steatoda grossa, and Steatoda nobilis, are known for their venomous bite, whose effect, however, spans between one and sixty hours.

Can Steatoda Spiders Bite?

Steatoda spiders can bite if they feel threatened. The bite might cause some discomfort with other mild to moderate symptoms including headache, lethargy, and nausea but it’s not usually very severe for most people.

Steatoda Nobilis

Ecological Importance and Behavior of Steatoda Spider

Steatoda spiders play a crucial role in controlling the population of pests in their habitats. They prey on woodlice, cockroaches, ladybugs, crickets, and even other spiders, including the black widow. Their preference for dark, undisturbed places such as garages, backyards, and cupboards, makes them a natural form of pest control in human dwellings.

Natural Predators and Prey-Predator Dynamics: In the wild, Steatoda spiders are not without their adversaries. Birds and larger mammals pose a constant threat. However, their ability to remain concealed in dark, secluded areas provides them with a significant advantage, allowing them to avoid predators while stalking their prey.

Relationship with Humans: Commonly found in close proximity to human dwellings, Steatoda spiders have developed a unique relationship with us. Often referred to as cupboard spiders, they tend to spin their webs in the dark, undisturbed corners of houses, gardens, garages, and bins. While their bite can cause discomfort, it is generally not severe, and their presence helps in keeping the population of other pests at bay.

Quick Facts

Other Names Cupboard spider
DistributionAfrica, America, and Asia
HabitatGarages, backyards, undisturbed places
DietWoodlice, cockroaches, ladybugs, crickets, and other spiders including black widow
Web TypeCobwebs
Lifespan1-2 years
IUCN Red List Statusonly 1 species currently assessed [0.8% of genus]

Steatoda Spider

Did You Know

  • This genus’s spiders are colloquially referred to as cupboard spiders since they mostly spin webs near dark, undisturbed locations near their house or even gardens, garages, and bins.

In summary, Steatoda spiders offer a fascinating glimpse into the world of arachnids.

Meet the Steatoda spiders! They’re part of the cobweb spider family and there are around 120 different types. Some, like the Steatoda borealis, look a lot like widow spiders. But don’t be fooled! Even though they look similar, Steatoda spiders aren’t as harmful to humans. Ready to discover more about them?

Steatoda Castanea

Spiders Belonging to this Genus

  • Steatoda adumbrata
  • Steatoda aethiopica
  • Steatoda alamosa
  • Steatoda alboclathrata
  • Steatoda albomaculata
  • Steatoda ancora
  • Steatoda ancorata
  • Steatoda andina
  • Steatoda apacheana
  • Steatoda atascadera
  • Steatoda atrocyanea
  • Steatoda autumnalis
  • Steatoda badia
  • Steatoda bertkaui
  • Steatoda bipunctata
  • Steatoda borealis
  • Steatoda capensis
  • Steatoda carbonaria
  • Steatoda caspia
  • Steatoda castanea
  • Steatoda chinchipe
  • Steatoda cingulata
  • Steatoda connexa
  • Steatoda craniformis
  • Steatoda dahli
  • Steatoda diamantina
  • Steatoda distincta
  • Steatoda ephippiata
  • Steatoda erigoniformis
  • Steatoda fagei
  • Steatoda fallax
  • Steatoda felina
  • Steatoda foravae
  • Steatoda grandis
  • False Black Widow (Steatoda grossa)
  • Steatoda gui
  • Steatoda hespera
  • Steatoda hui
  • Steatoda iheringi
  • Steatoda incomposita
  • Steatoda kiwuensis
  • Steatoda kuytunensis
  • Steatoda latifasciata
  • Steatoda lawrencei
  • Steatoda leonardi
  • Steatoda lepida
  • Steatoda linzhiensis
  • Steatoda livens
  • Steatoda longurio
  • Steatoda mainlingensis
  • Steatoda mainlingoides
  • Steatoda marmorata
  • Steatoda marta
  • Steatoda maura
  • Steatoda mexicana
  • Steatoda micans
  • Steatoda minima
  • Steatoda moerens
  • Steatoda moesta
  • Steatoda morsitans
  • Steatoda nahuana
  • Steatoda nasata
  • Steatoda ngipina
  • Steatoda nigrimaculata
  • Steatoda nigrocincta
  • Steatoda niveosignata
  • False Widow (Steatoda nobilis)
  • Steatoda octonotata
  • Steatoda palomara
  • Steatoda pardalia
  • Steatoda paykulliana
  • Steatoda pengyangensis
  • Steatoda perakensis
  • Steatoda perspicillata
  • Steatoda picea
  • Steatoda porteri
  • Steatoda punctulata
  • Steatoda quadrimaculata
  • Steatoda quaesita
  • Steatoda quinquenotata
  • Steatoda retorta
  • Steatoda rhombifera
  • Steatoda rubrocalceolata
  • Steatoda rufoannulata
  • Steatoda sabulosa
  • Steatoda sagax
  • Steatoda saltensis
  • Steatoda seriata
  • Steatoda singoides
  • Steatoda sordidata
  • Steatoda speciosa
  • Steatoda spina
  • Steatoda subannulata
  • Steatoda terastiosa
  • Steatoda terebrui
  • Steatoda tigrina
  • Steatoda tortoisea
  • Steatoda transversa
  • Steatoda trianguloides
  • Triangulate Cobweb (Steatoda triangulosa)
  • Steatoda tristis
  • Steatoda truncata
  • Steatoda ulleungensis
  • Steatoda uncata
  • Steatoda variabilis
  • Steatoda variata
  • Steatoda variipes
  • Steatoda vaulogeri
  • Steatoda venator
  • Steatoda violacea
  • Steatoda wangi
  • Steatoda wanshou
  • Steatoda washona
  • Steatoda xerophila
  • Steatoda xishuiensis

Steatoda Grossa

Physical Description and Identification

Adults

  • Size: Females are 0.23-0.59 inches (0.58-1.49 cm), and males are 0.19-0.43 inches (0.48- 1.09 cm). The size varies from one species to the other, but males are smaller than females.
  • Color: The color varies from pale brown to black to reddish plum.
  • Other Characteristic Features: They have an oval-shaped abdomen with white, beige, or orange markings that remain partially visible, merging to form a crescent or a triangle.

Steatoda paykulliana of this genus has an orange or reddish marking on its back, which compels people to take it for the highly venomous redback spider.

Eggs

The eggs of most species of this genus could be pale yellow, cream, or even whitish. The shapes also vary from round to oval or even spherical.

Spiderlings

Most of the spiderlings like those of the Steatoda grossa detach from their mother immediately after dispersal,

The Web

They build webs in dark and secured places that are tangled and three-dimensional, comprising sticky silken fibers joined in an irregular fashion.

Are Steatoda Spiders Venomous?

Yes, Steatoda spiders have venom. However, it’s not as strong as some other spiders, like widow spiders. Some species of this genus, like the Steatoda grossa, and Steatoda nobilis, are known for their venomous bite, whose effect, however, spans between one and sixty hours.

Can Steatoda Spiders Bite?

Steatoda spiders can bite if they feel threatened. The bite might cause some discomfort with other mild to moderate symptoms including headache, lethargy, and nausea but it’s not usually very severe for most people.

Steatoda Nobilis

Ecological Importance and Behavior of Steatoda Spider

Steatoda spiders play a crucial role in controlling the population of pests in their habitats. They prey on woodlice, cockroaches, ladybugs, crickets, and even other spiders, including the black widow. Their preference for dark, undisturbed places such as garages, backyards, and cupboards, makes them a natural form of pest control in human dwellings.

Natural Predators and Prey-Predator Dynamics: In the wild, Steatoda spiders are not without their adversaries. Birds and larger mammals pose a constant threat. However, their ability to remain concealed in dark, secluded areas provides them with a significant advantage, allowing them to avoid predators while stalking their prey.

Relationship with Humans: Commonly found in close proximity to human dwellings, Steatoda spiders have developed a unique relationship with us. Often referred to as cupboard spiders, they tend to spin their webs in the dark, undisturbed corners of houses, gardens, garages, and bins. While their bite can cause discomfort, it is generally not severe, and their presence helps in keeping the population of other pests at bay.

Quick Facts

Other Names Cupboard spider
DistributionAfrica, America, and Asia
HabitatGarages, backyards, undisturbed places
DietWoodlice, cockroaches, ladybugs, crickets, and other spiders including black widow
Web TypeCobwebs
Lifespan1-2 years
IUCN Red List Statusonly 1 species currently assessed [0.8% of genus]

Steatoda Spider

Did You Know

  • This genus’s spiders are colloquially referred to as cupboard spiders since they mostly spin webs near dark, undisturbed locations near their house or even gardens, garages, and bins.

In summary, Steatoda spiders offer a fascinating glimpse into the world of arachnids.