Common House Spiders: First Aid for Australian Spider Bites
Table of Contents
Every Australian home encounters various house spider species, from harmless web-builders to occasional dangerous varieties found across the continent. While the thought of encountering spiders in your home might cause concern, learning about common house spiders in Australia and knowing proper first aid for spider bites can help you respond confidently to any situation.
Australian House Spiders
House spider species in Australia are much less dangerous than many people believe. These house spiders help control insect populations in and around your home. These spiders are often found in quiet corners, under furniture, and in areas where insects and other spiders might gather.
The brown house spider is one of the most frequently encountered house spider species throughout Australia. This brown spider typically measures between 6-10mm in body length and creates distinctive funnel-shaped webs. Brown house spiders are found in both indoor and outdoor environments, particularly in areas with adequate shelter and food sources.
Black house spiders are another common type of spider you might encounter. These spiders are dark brown to black in colour and are known for their distinctive lacy webs. Black house spiders live in dry, sheltered locations and webs of black house spiders are often seen around window frames, eaves, and garden structures. Black house spiders are found throughout urban areas and are considered relatively harmless to humans.
Common Spider Species in Australian Homes
Huntsman Spiders Huntsman spiders are large, fast-moving spiders that house spider enthusiasts consider beneficial. These spiders do not make webs and instead hunt their prey actively. Huntsman spiders are great at controlling cockroaches and other unwanted insects. Despite their intimidating size, huntsman spiders are not considered dangerous to humans and spiders are shy creatures that prefer to avoid human contact.
Daddy Long-Legs Spiders Daddy long-legs spiders, also known as cellar spiders, are common house spider species in many Australian homes. These spiders have extremely long, thin legs and small bodies. Daddy-long-legs spiders create irregular webs in corners and undisturbed areas. These spiders are not aggressive and pose little risk to humans.
Wolf Spiders Wolf spiders are robust, ground-dwelling hunters found throughout Australia. These spiders are often mistaken for more dangerous species due to their size and appearance. Wolf spiders tend to be nocturnal and spiders prefer dark, sheltered areas during the day. Female spiders carry their egg sac attached to their abdomen until the spiderlings hatch.
Jumping Spiders These small, compact spiders are known for their excellent eyesight and ability to leap considerable distances. Jumping spiders are active during the day and are often seen on walls and window surfaces hunting for prey. These spiders are generally harmless and actually quite beneficial for pest control.
Potentially Dangerous Australian Spiders
While house spiders are typically harmless, some Australian spiders are considered dangerous to humans and require immediate medical attention if a bite occurs.
Redback Spiders The redback spider is native to Australia and is one of the most well-known dangerous spiders. Female redback spiders are easily identified by the red marking on their black abdomen. A redback spider bite can cause severe symptoms and requires immediate medical attention. Redback spiders are commonly found in urban areas, particularly in dry, sheltered locations like sheds, outdoor furniture, and garden areas.
Funnel-Web Spiders Funnel-web spiders are among the most dangerous spiders in the world. These spiders are primarily found in eastern Australia and are particularly common in Sydney and surrounding regions. Male funnel-web spiders are considered more dangerous than females. These spiders create funnel-shaped webs and are aggressive when threatened.
White-Tailed Spiders White-tail spiders, or white-tailed spiders, are hunting spiders that are found throughout Australia. These spiders are known to enter homes and are often found in bedding, clothing, and towels. While not as dangerous as redback or funnel-web spiders, white-tail spider bites can cause localised pain and skin irritation.
Mouse Spiders Mouse spiders are dark brown to black, stocky spiders that are found across Australia. These ground-dwelling spiders create burrows and are often confused with funnel-web spiders. Mouse spiders are dark brown and can deliver a potentially dangerous bite, though bites are rare.
Trapdoor Spiders Trapdoor spiders are another group of ground-dwelling spiders that create burrows with hinged doors. These spiders are generally not aggressive towards humans but can bite if handled. Most trapdoor spider bites cause only minor symptoms.
Spider Bite First Aid
Every homeowner should know spider bite first aid, especially those dealing with various house spider species. Spider bites cause only minor symptoms in most cases, but some require immediate medical attention.
General First Aid Steps:
Stay Calm: Most spider bites are not dangerous, and panic can worsen the situation.
Catch the Spider: If safely possible, try to catch the spider or take a clear photograph. This helps medical professionals identify the species and determine appropriate treatment.
Clean the Bite: Wash the bite area gently with soap and water to prevent infection.
Apply Cold Compress: Use a cold pack or ice wrapped in cloth to reduce pain and swelling. Apply for 10-15 minutes at a time.
Monitor Symptoms: Watch for signs of serious reaction including severe pain, muscle cramping, difficulty breathing, or systemic symptoms.
For Potentially Dangerous Spider Bites:
If you suspect a bite from a redback spider, funnel-web spider, or other dangerous spider species:
Call Emergency Services: Ring 000 immediately for bites from funnel-web spiders or if experiencing severe symptoms.
Apply Pressure Bandage: For funnel-web spider bites, apply a broad pressure bandage over the bite site and up the limb to slow venom spread.
Keep Still: Minimise movement to slow venom circulation.
Seek Medical Attention: Even if symptoms seem mild, bites from potentially dangerous spiders require professional medical assessment.
Prevention Strategies
Reducing Spider Populations:
- Regular cleaning and vacuuming help remove house spider webs and the spiders themselves
- Seal cracks and gaps where spiders might enter
- Remove clutter that provides hiding places
- Keep garden areas tidy and remove debris
- Use door seals and window screens
Making Your Home Less Attractive:
- Spiders prefer dark, undisturbed areas, so regular cleaning of storage areas helps
- Address moisture issues that attract insects (spider food sources)
- Keep outdoor lighting to a minimum as it attracts insects
- Store firewood and garden materials away from the house
When to Seek Medical Attention
While house spider bites require only basic first aid, certain symptoms warrant immediate medical attention:
- Severe or increasing pain
- Muscle cramps or spasms
- Difficulty breathing or swallowing
- Nausea or vomiting
- Profuse sweating
- Rapid heartbeat
- Signs of infection around the bite site
FAQs
What Do House Spiders Eat?
House spiders primarily feed on flying insects such as flies, mosquitoes, moths, and gnats. They also consume crawling insects like ants, beetles, and cockroaches. Larger house spider species may occasionally eat smaller spiders.
What is the Most Dangerous Type of Spider in Australia?
The Sydney funnel-web spider is considered the most dangerous spider in Australia. Male Sydney funnel-web spiders are particularly venomous and aggressive, with bites potentially fatal without prompt medical treatment. These spiders are found primarily around Sydney and surrounding areas in New South Wales.
How Long Do House Spider Bites Take to Heal?
Most house spider bites heal within 1-2 weeks with proper care. Minor bites from harmless species typically show improvement within 2-3 days, with complete healing in 7-10 days. Bites that become infected or are from venomous species may take longer and require medical attention.
