Square-ended Cobweb Spider
Female, ventral
Male, profile
Redback (Latrodectus hasseltii)Class: Animals (Animalia) - Jointed Legs (Arthropoda) - Spiders, Scorpions, Mites & Ticks (Arachnida)
Order: Spiders (Araneae)
Family: Comb-footed Spider (Theridiidae)     iNaturalist Observation
Species: Redback (Latrodectus hasseltii)
This Photo:     Male, dorsal
Synonym: Latrodectus hasselti

Thank you Anthony Paul for confirming the id of this species for us

General Species Information:
Found on Ellura (in the Murray Mallee, SA), the Adelaide Hills and elsewhere
A poisonous spider that can be lethal, but very, very rarely.
Poisoning usually occurs due to picking up material off the ground without gloves. They love corrugated iron.
They are generally black with a dark red diamond shaped stripe on their abdomen which extends from the top all the way round underneath.
The stripe goes bright red when threatened.
Diagnostically only the red hour glass underneath is relevant. As such, they can be missing the red stripe on top, are often brown not black, and also often have white stripes.

Copyright © 2015-2022 Brett & Marie Smith. All Rights Reserved. Photographed 09-Oct-2015
This species is an Australian Native Species, not listed in the SA Murray Mallee Survey of 2010.