Find a spider by...
webs and egg sacs
(ID by Greg Anderson)
The markings on this species are somewhat variable but there could be more than one
species in a images below
female: 7 mm|
male: 4 mm
This spider is often found under loose bark and in leaf litter in eucalypts and may also venture into houses
Uncertain but treat as potentially dangerous to humans
As can be seen from the photos on this page the lighter coloured markings seen on the abdomen of this black spider are variable from specimen to specimen and probably are
not unique to this cosmopolitan species.
The spider presented above is most likely to be the cupboard spider, Steatoda grossa, as named in Jennifer Shield's
"Spiders of Bendigo" booklet. On the other hand, at least one of the photos included on this page appears to be a perfect match for a spider labelled as Steatoda
paykulliana on page 221 of "A Guide to Spiders of Britain and Northern Europe" by D. Jones. Both of these Steatoda species are considered to be cosmopolitan but
Platnick's World Spider Catalog lists S. paykulliana as not being in Australia. However, the catalog does list three Western Australian
Steatoda species as well as several in New Zealand and Papua New Guinea as well as two other cosmopolitan species and one that is described as pantropical. For
these reasons and because of the possibility of undescribed Australian Steatoda species the species name of the spider presented on this page should be considered
tentative for the time being.
Note that there have been reports from Europe of Steatoda species causing significant illness in humans. In addition, Isbister and Gray
(Journal of Toxicology; Clinical toxicology, 2003, Vol. 41, pages 809-819) have noted that bites by Steatoda species in Australia can cause prolonged pain
and systemic effects similar to, though less severe than, those of the redback spider, Latrodectus hasseltii. Fortunately, the available
redback spider antivenom also seems to be effective in instances of Steatoda envenomation.
Spider(s) with a very similar appearance: Latrodectus hasseltii.
Email Ron Atkinson for more information.
Last updated 3 June 2018.