Black House Spider In Australia

The Secret Lives of Black House Spiders: Australia’s Stealthy Insect Hunters

The black house spider, commonly found in Australia, is an arachnid species of significant interest to entomologists and other researchers. It has long been a source of fear and fascination throughout the country due to its presence as a home invader. This article will provide an overview of this species and examine how it impacts homeowners nationwide.

This species belongs to the genus Badumna and is closely related to European spiders, such as the domestic house spider (Tegenaria domestica). The black house spider can be readily identified by its large size, usually ranging from 10-14mm for females and 8-10mm for males. Its body is dark brown or greyish with distinctive yellow markings on its abdomen. Additionally, their legs are known for having thick bands at their joints, giving them their signature striped appearance.

In terms of behaviour, black house spiders typically establish webs near doors or windows where they remain during daylight hours before emerging at night to search for prey such as insects or small lizards. They mainly feed on flies but have also been observed consuming larger animals like geckos if given the opportunity. As a result, they pose both physical and psychological risks to human inhabitants living in close proximity to these spiders’ habitats.

What Is A Black House Spider?

The black house spider, otherwise known as the Australian black spider or Badumna insignis, is a species of funnel-web spider found throughout Australia. It has an erect posture, with long legs and a body measuring up to one inch in length.

The spider has a distinctive glossy black colouration on its cephalothorax, abdomen and appendages. Its colouring helps it blend into dark spaces like window frames, doorways and eaves, often where they can lurk in wait for unsuspecting prey such as insects or small lizards.

In addition to its physical characteristics, this species of arachnid also exhibits certain behaviours that make it difficult to identify and remove from homes. For example, when threatened by predators or humans, they will typically retreat into their webs until the threat passes.

This behaviour makes them particularly hard to find in locations inside dwellings unless there is direct contact with them. Furthermore, if disturbed while in hiding, they may become aggressive and bite as a defence mechanism. Therefore special care must be taken when attempting to identify and remove these spiders from residential areas.

Classification of Australian Black House Spider

Scientific Species Name: Badumna insignis Genus: Badumna Class: Arachnida Family: Desidae Order: Araneae Subphylum: Chelicerata Phylum: Arthropoda Kingdom: Animalia


  • The Australian Black House Spider is a species of spider commonly found in and around human dwellings in Australia.
  • It belongs to the Badumna genus, which includes other species of spiders found in Australia, New Zealand, and Southeast Asia.
  • Black House Spiders are classified under the Arachnida class, which includes spiders, scorpions, ticks, and mites.
  • They are members of the Desidae family, a group of spiders commonly known as “false funnel-web spiders”.
  • The Order Araneae includes all spiders, and the Subphylum Chelicerata includes arachnids, horseshoe crabs, and sea spiders.
  • Black House Spiders belong to the Phylum Arthropoda, which comprises joint-legged invertebrates, including insects, arachnids, and crustaceans.
  • The Australian Black House Spider is a member of the Animalia Kingdom, which includes all animals on Earth.

10 Interesting Facts About The Australia Black House Spider

  1. The Australian Black House Spider is found throughout Australia and is commonly found in human dwellings.
  2. They are known for their large size and distinctive black colour.
  3. Black House Spiders are often mistaken for funnel-web spiders, which are highly venomous but not dangerous to humans.
  4. They primarily feed on insects and other small arthropods.
  5. Black House Spiders are relatively shy and tend to avoid human contact.
  6. They can spin large webs and often construct them in dark, sheltered areas such as sheds and garages.
  7. Females can lay up to 100 eggs at a time, and the young spiders often stay with the mother for several weeks after hatching.
  8. Black House Spiders have relatively weak venom and are not considered a significant threat to humans.
  9. They play an important role in controlling insect populations and are considered beneficial to have around the home.
  10. Despite their reputation as potentially dangerous spiders, Black House Spiders are an important part of Australia’s ecosystem and are not typically aggressive towards humans.

Female Black House Spider In Australia
Female Black House Spider In Australia – By fir0002flagstaffotos [at] gmail.comCanon 20D + Sigma 150mm f/2.8 – Own work, GFDL 1.2,

male black house spider Australian
Male black house spider Australian – By Toby Hudson – Own work, CC BY-SA 3.0 au,

Where Are They Found?

The black house spider is native to Australia, found mostly in coastal areas. It has a wide distribution range and can be seen around the country, including urban environments like Sydney and Melbourne. Though they are not aggressive spiders, their presence can cause alarm due to their large size and webbing that looks threatening when viewed up close.

Black house spiders prefer sheltered places such as under eaves, between rocks or logs, behind window shutters or furniture, and inside woodpiles or hollow trees – all of which provide dense cover and protection from predators. They build webs in these locations to catch prey while remaining hidden from view. Some key features of the black house spider’s habitat include:

  • Secluded dark spots within human dwellings
  • Areas with a high humidity level
  • Sheltered places outside homes where insects are abundant for food

In addition to the general environment preferences stated above, the Australian black house spider will often make its home wherever it finds shelter near insect activity. This could mean living in the corner of your garage if you have plenty of bugs present for them to feed on; alternatively, it could even involve building webs along pathways where people walk! As long as this location provides enough food sources for them to survive on, they may stay put until conditions change again.

Appearance And Characteristics

The black house spider is an Australian species of arachnid. It has a distinctive appearance that makes it easy to identify in the wild. The body and legs are typically dark brown or black, with lighter bands or stripes around the abdomen. Its average size ranges from 8-20mm in length, making it one of the larger spiders found in Australia.

Body Color Legs Abdomen
Dark Brown/Black Long & Robust Light Bands/Stripes

This species can be found living under eaves, window frames, and other sheltered areas near human dwellings. They live primarily on insects they capture while creating webs inside their chosen sheltering area. Although their venom is potent and painful if bitten, bites generally only occur when humans threaten or disturb the spider.

As such, these spiders are usually not seen as invasive pests; rather, they may be considered beneficial for controlling insect populations around homes and gardens. For this reason, many Australians consider them welcome guests in their houses—even though some people may feel uncomfortable having large spiders nearby!

Dangerous Or Not?

The black house spider (Badumna insignis), native to Australia, is often found in human dwellings. This species of arachnid creates webs inside and around buildings in order to capture its prey, which consists mostly of smaller insects such as flies or beetles. Although this spider can bite humans if disturbed, its venom has not been known to cause serious harm. In fact, the effects of a black house spider’s bite are usually mild and localized pain or itchiness at the site of the bite.

In comparison with other spiders that inhabit Australia, including some members of the Funnel-web family, for example, the black house spider does not pose a significant danger to people. Unlike these more toxic species, it does not require medical attention after being bitten by one.

However, due to their presence in domestic areas, they should be handled with caution if found within living spaces. As such, it could be said that while there is potential for harm from these creatures when encountered near humans, they do not typically represent a major threat.

Risk Of Infestation

The black house spider, or Badumna insignis, is a species of Australian spider commonly found in homes and gardens. As with any home invader, the risk of infestation from these arachnids should be considered carefully by homeowners.

Black house spiders can cause significant damage to property if left unchecked and potentially be hazardous to humans via their venomous bite. Infestations often occur due to poor pest control practices or inadequate sanitation measures taken around the home environment.

Preventing an infestation of black house spiders requires diligent effort on behalf of homeowners. Regular maintenance, such as sealing up cracks and crevices where spiders may enter the home, will help reduce the chances of an infestation occurring.

Additionally, insecticides and other chemical treatments may be necessary for effective spider control in areas that could not otherwise be accessed physically. Homeowners must also ensure that they regularly inspect all parts of their residence for signs of activity from these pests and take appropriate steps to eradicate them should any be detected.

Identifying The Presence Of Spiders

Spiders are one of the most common arthropods in Australia, and they can be found inside as well as outside. Identification of spiders is essential to understand their presence and whether or not they pose a threat.

The black house spider (Badumna insignis) is native to Australia and is commonly found living on walls near windows or other locations that provide them with access to insects for food. They have distinctive markings which help distinguish them from other species:

  • Colour: Generally dark brown/black, but may also have red/orange bands or spots on their abdomen
  • Legs: Eight legs with two claws at the end of each leg
  • Webbing: Constructs an irregular web between objects such as rocks, wood piles etc., often indoors

To identify the presence of black house spiders, it is important to look for any webs around window frames, doorways and eaves; these will usually contain small white egg sacs if there are spiders present. Additionally, inspecting entry points into buildings, such as vents, cracks in foundations and gaps under doors, can reveal evidence of activity by this spider species. If you suspect you may have a large infestation, seeking professional advice would be recommended.

It is important to note that although black house spiders bite humans when threatened or provoked, they generally cause only minor discomfort and rarely lead to serious medical conditions unless a severe allergic reaction occurs. For this reason, it should not necessarily be concluded that all Australian spiders are ‘house invaders’, though proper identification should always be undertaken before taking action against them.

Types Of Commercial Properties A1 Pest & Weed Control Provides Services To In Melbourne

  • Office Buildings and Complexes
  • Retail Centers and Shopping Malls
  • Public Housing and Government Buildings
  • Hotels and Resorts
  • Restaurants and Food Service Establishments
  • Strata and Large Accommodation Complexes
  • Industrial and Manufacturing Facilities
  • Hospitals and Healthcare Centers
  • Schools and Universities
  • Apartment Buildings and Community Associations
  • Sports Fields and Outdoor Recreational Areas
  • Transportation Hubs and Infrastructure
  • And More
READ  The Australian Cockroach - Pest Knowledge Base

Our Pest Control and Commercial Weed Spraying Services In The City Of Melbourne

READ  Deadly or Harmless? Meet Australia's Spider Species

Call Now For A Free Quote

Call Us For The Best Services Available

Use The Quick Quote Form

Contact Us For Professional Services

Prevention Strategies

The black house spider, native to Australia and other parts of the world, has become a common invader in homes across the continent. In order to reduce the presence of these spiders inside dwellings, a number of prevention strategies can be employed.

READ  Cockroaches In Australia - Knowledge Base

Spider-proofing is one such approach that involves sealing up any potential entry points into a home or building with caulk or weatherstripping. This prevents arachnids from gaining access indoors and often requires an inspection of all windows, doors, vents and air conditioning units for possible areas where they may enter.

Habitat modification outside a dwelling also plays an important role in reducing spider populations by eliminating sources of moisture that attract them as well as removing objects like piles of wood or debris near the foundations of buildings that provide shelter.

Exclusion methods also prevent spiders from entering residences; applying screens over windows and properly maintaining door sweeps on exterior doors can help minimize their numbers significantly. It is also important to practice environmental control measures such as vacuuming regularly and using insecticides around window frames or baseboards if necessary.

Good sanitation practices, including keeping food stored away properly, not leaving pet dishes out overnight, emptying trash cans frequently and cleaning up spills immediately, will discourage many species from seeking refuge indoors.

These proven pest prevention techniques can go a long way towards preventing infestations by unwelcome guests, such as the black house spider in Australian homes. With just some basic steps taken to secure entrances into your residence and maintain proper sanitation habits around living spaces, you can greatly reduce your chances of experiencing unwanted encounters with this eight-legged intruder.

Removal Techniques

Having discussed the various prevention strategies for black house spiders in Australia, it is now necessary to consider removal techniques. There are a variety of extermination and pest control options available when dealing with an infestation.

Spider exterminators can be hired on a case-by-case basis; some specialize in spider pests, while others offer services that cover a broad range of insect and arachnid species. Chemical treatments may also be employed to eliminate existing populations, but these should only be used as a last resort due to their potential toxicity levels and environmental concerns.

In addition, physical removal methods such as vacuuming or sweeping can be utilized to remove individual specimens from areas where they have been spotted. This approach is often less expensive than hiring an exterminator, though this method does not address an underlying issue that might result in recurrent infestations.

As such, if physical removal fails to yield results over time, other measures would need to be considered in order to eradicate any established colonies effectively. Nonchemical alternatives like fly traps or sticky glue boards might also prove useful for those looking for more permanent solutions.

All things considered, there are numerous ways by which one can deal with black house spiders in Australia; however, the most important factor for success is understanding how best to prevent them from entering homes initially and knowing which tactics will work most efficiently given a particular situation.

With careful consideration of all available options and proper implementation of selected measures, effective control of these invaders can easily be achieved without the use of harmful chemicals or excessive expense.

Professional Extermination

The Black House Spider is an unwelcome guest in many Australian homes, and professional extermination services are the best course of action for spider removal. Professional exterminators have the expertise necessary to properly identify a black house spider infestation as well as provide comprehensive spider control solutions.

Exterminator services range from chemical treatments to physical barriers that can prevent future infestations. It is important to contact a certified pest removal service if one suspects they may have a black house spider issue.

Professional exterminators also understand how spiders interact with their environment, enabling them to make proper assessments about the size and scope of an infestation. This helps determine the correct approach for effective spider removal and long-term control measures, such as preventive maintenance programs or regular inspections by professionals.

Furthermore, reputable pest removal companies will use products that meet safety regulations and follow ethical practices when conducting any form of pest management activity. In short, relying on expert advice from skilled technicians is essential in eradicating Black House Spiders from any home.

Long-Term Control Measures

Long-term control measures for the black house spider in Australia involve both chemical and non-chemical strategies. Spider-proofing is a physical barrier preventing spiders from entering buildings, while habitat modification may reduce access to food sources or shelter areas that attract them. Chemical deterrents such as insecticides can also be applied in affected areas and should be done regularly with professional assistance.

Management of existing populations can include sanitation improvement, regular inspection and exclusionary practices to minimize contact between humans and spiders. Additionally, environmental modifications such as trapping or removal of webs and egg sacs should be conducted when necessary.

The most effective long-term control measure against black house spiders is the implementation of integrated pest management systems that are tailored to each environment’s particular needs.

Black house spider in its web
Black house spider in its web – By fir0002flagstaffotos [at] gmail.comCanon 20D + Sigma 150mm f/2.8 – Own work, GFDL 1.2,
A combination of preventive methods like pesticide application, sanitation improvement, structural changes, and population monitoring techniques will provide better results than relying on single approaches alone. To ensure successful outcomes, it is important to implement these strategies consistently over time and stay vigilant about potential new infestations.

Frequently Asked Questions

How Can I Tell If I Have A Black House Spider Infestation?

Identifying a black house spider infestation can be difficult, but there are signs to watch for. Knowing the symptoms of a potential infestation helps homeowners take preventive measures and reduce their risk of an unwelcome invasion. Entomologists and arachnologists have identified several key indicators that may point to the presence of black house spiders in a home:

  1. Cobwebs present in dark corners or other undisturbed areas;
  2. Live sightings of medium-sized black spiders with striped legs;
  3. An increase in the number of flying insects around windowsills or doors.

In addition to these telltale signs, it is important to note that many species of Australian spiders bear some resemblance to black house spiders and can create confusion when trying to identify them correctly. Therefore, it is advisable to seek expert advice before attempting any pest control.

With this in mind, certain steps can be taken by homeowners to reduce the likelihood of a black house spider infestation occurring: regular dusting and vacuuming, keeping windows screened at all times, sealing cracks near entry points such as walls and door frames, and removing piles of debris from outside the property which could otherwise act as hiding places for invading pests.

Being aware of these common issues surrounding black house spiders will help equip individuals with knowledge about how best to protect their homes against unwanted guests. A proactive approach toward prevention offers an ideal way forward for those looking towards safeguarding their properties from intruders.

Is There A Natural Way To Get Rid Of Black House Spiders?

The presence of black house spiders can be an unwelcome surprise in any home. It is important to identify effective control methods, especially those that are natural and safe for the environment. To eliminate black house spiders from home, it is beneficial to explore natural remedies for spiders as well as spider-repellent recipes.

Natural pest control options provide viable alternatives to chemical treatments as they do not adversely affect other organisms or cause long-term environmental damage. Additionally, some natural spider control methods have been found to be more effective than their synthetic counterparts.

For example, essential oils such as peppermint oil and tea tree oil may act as natural repellents against certain species of spiders when applied around entry points of homes or sprayed directly on webs. Similarly, neem oil has been observed to reduce populations of arthropods, including ants and beetles, which could potentially deter black house spiders away from home by disrupting food sources.

In addition to insecticides and sprays, various physical barriers can prevent black house spiders from entering a residence, such as caulking windows and doorsills or placing weatherstripping along baseboards inside the home. Furthermore, regularly vacuuming areas where insects might live will help reduce potential hiding spots for these arachnids. Although many measures exist to keep pests out of one’s living space, combining multiple approaches may yield the most successful outcome in preventing infestation with minimal risk to people and animals living in the same vicinity.

Are Black House Spiders More Dangerous Than Other Spiders?

Black house spiders are species native to Australia, and they can be found in many areas around the country. Although these spiders are generally harmless, there is some concern that they may pose more risk than other spiders. This raises the question: are black house spiders more dangerous than other spiders?

To answer this question, it is important to compare the level of danger associated with black house spiders relative to other species. Generally speaking, most types of spiders do not present a significant threat to humans unless provoked. However, when compared to other Australian species, blackhouse spiders have been known to exhibit aggressive behaviours such as biting or chasing after intruders. This trait makes them potentially more hazardous than others. Additionally, their venom has been reported to cause pain and swelling at the site of the bite for up to 24 hours afterwards.

In comparison to its counterparts, the blackhouse spider presents a greater risk due to its active defence strategy and relatively powerful venom. Therefore, it is advisable that people take extra precautions if they encounter one of these arachnids in their home or garden. It should also be noted that bites from any spider require prompt medical attention if symptoms become severe or prolonged.

What Is The Best Way To Prevent Black House Spiders From Entering My Home?

The question of how to best prevent black house spiders from entering one’s home is an important issue that arachnologists must consider. To stop black house spiders from invading, it is necessary to understand the behaviour and habits of this species to identify effective strategies for keeping them out. Avoiding black house spiders involves creating an environment that discourages their presence by maintaining appropriate levels of humidity and temperature, as well as eliminating potential food sources such as insects or other small creatures they might feed on. Additionally, sealing any possible entryways around windows and doors can help deter these pests from entering.

This strategy should be paired with regular maintenance of areas where black house spiders may congregate, such as garage walls, closets, attics, basements, etc., which includes vacuuming corners and ridding webs when needed. Furthermore, if necessary, pest control treatments can also be applied both indoors and outdoors to reduce the population of these arthropods further.

It is worth noting that while some methods are more successful than others for preventing black house spiders from entering a home, a combination of multiple approaches will ultimately produce the most desirable results. With carefully implementing these prevention techniques, people will feel safe knowing that their homes remain free from unwelcome eight-legged visitors.

How Likely Is It That I Will Encounter A Black House Spider In My Home?

The question of how likely it is to encounter a black house spider in one’s home is important. The chances of encountering these spiders can be affected by several factors, such as the level of infestation and prevention measures taken. It is not uncommon for homeowners to find themselves dealing with black house spider infestations, which may have occurred due to their homes being conducive environments for them to thrive in or because they were unknowingly brought inside on packages or pets.

Homeowners should take steps to prevent further infestation if black house spiders are found within their homes. This includes removing any potential nesting sites, sealing up cracks and crevices that may provide entry points, using insecticides where appropriate and regularly inspecting areas most vulnerable to invasions from outside sources.

Careful consideration should also be given when bringing items into the home, particularly those from outdoors locations like gardens or compost piles where rabid arachnids tend to congregate. Considering all of this will greatly reduce the chances of having a problem with blackhouse spiders invading your home.

Overall, there is always some risk that you could come across a black house spider while living in your own residence – however, following preventative measures can drastically lessen this possibility. Knowing what signs to look out for and understanding the conditions necessary for spiders’ survival means that proactive approaches can go a long way towards keeping everyone safe inside their own homes.


Black house spiders are a common species of spider found in Australia. While they can be intimidating to some, they really pose little threat to people or their homes. In fact, black house spiders help keep other insect populations down and provide an important ecological balance. With the right precautions taken, homeowners need not fear having these spiders around.

The best way to prevent infestation by black house spiders is to seal any cracks and crevices on the exterior walls of one’s home and make sure that all windows and doors fit tightly shut. Additionally, ensuring that debris such as wood piles and leaves do not accumulate near the perimeter of your property will reduce potential habitats for these arachnids.

Lastly, regular maintenance inside your home should include vacuuming floors and wiping webs away from doorframes and window sills with a damp cloth or vacuum attachment.

In conclusion, it is unlikely that one would encounter a black house spider in their home if appropriate steps had been taken to prevent them from entering in the first place. Although some may find this species of spider intimidating due to its large size, there is no cause for alarm; these critters are beneficial predators whose presence should be welcomed by those who understand their importance within the ecosystem.

Resources and Further Reading

Black House Spider – The Australian Museum

Leave a Reply

Your email address will not be published.

You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>