π·οΈRedback spider
The redback spider, also known as the Australian black widow, is a species of highly venomous spider believed to originate in Australia, but which is now found in Southeast Asia, Japan and New Zealand. It has also been found in packing crates in the United States with colonies elsewhere outside Australia. It is a member of the cosmopolitan genus Latrodectus, the widow spiders. The adult female is easily recognised by her spherical black body with a prominent red stripe on the upper side of her abdomen and an hourglass-shaped red/orange streak on the underside. Females usually have a body length of about 10 millimetres (0.4Β in), while the male is much smaller, being only 3β4Β mm (0.12β0.16Β in) long.
Text: Wikipedia, CC BY-SA 4.0.
The IUCN Red List has not assessed Latrodectus hasselti yet.
- Body mass
- not recorded
- Body length
- 0.01 m
- Shoulder height
- not recorded
- Top speed
- not recorded
- Bite force
- not recorded
- Maximum lifespan
- not recorded
Everything we know about the Redback spider
Typical adult figures. Where a value is an estimate rather than a measurement, it says so.
Body length0.01 maverageOther figures βHide β
Species-level value synthesised as the mean of: female.
By sex
- Female0.01 mWorld Spider Trait DatabasePekar et al. 2021, Database 2021:baab064Lyons et al 2025 trait data; Shahi, Hosseini, Shemshad & Rafinejad JAVAD.
- Female0 mWorld Spider Trait DatabasePekar et al. 2021, Database 2021:baab064Lyons et al 2025 trait data; Shahi, Hosseini, Shemshad & Rafinejad JAVAD.
- Female0.01 mWorld Spider Trait DatabasePekar et al. 2021, Database 2021:baab064Lyons et al 2025 trait data; Shahi, Hosseini, Shemshad & Rafinejad JAVAD.
average = a mean across sexes or species in a group.
Not recorded for Redback spider yet: body mass, shoulder height, top speed, bite force, maximum lifespan.
Family tree
- kingdomAnimalia
- βΊphylumArthropoda
- βΊclassArachnida
- βΊorderAraneae
- βΊfamilyTheridiidae
- βΊgenusLatrodectus
- βΊspeciesLatrodectus hasselti
- orderSpiders Β· Araneae
- superfamilyAraneoidea
- familyTheridiidae
- genusLatrodectus
All 8 branches βFewer branches β
- kingdomMetazoa
- phylumArthropoda
- subphylumChelicerata
- orderSpiders Β· Araneae
- suborderAraneomorphae
- superfamilyAraneoidea
- familyTheridiidae
- genusLatrodectus
More about the Redback spider
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