Here's some photos sent in by
Red and Black Spider (Ambicodamus crinitus,
In summer, males leave their web, during daylight hours,
and wander in search of females. This wandering habit
often brings them indoors. Due to the red and black
colour, the spider is often confused with the red-back
spider and, as red is a common warning colour, the
spider is sometimes thought to be highly venomous. The
egg case has a woolly appearance and is suspended in the
Males are similar to
the female in colour. The
and legs are commonly bright red and the abdomen black,
but the can vary from orange to dark red, sometimes with
a bluish tinge. They are
a small spider with slender legs, most easily recognised
by colour pattern as described above.
The male's body length is around 10mm
and the female's 12mm.
Their web consists of a few irregular strands built
under bark, stones or logs.
Despite the red colour of this spider, its venom is
not dangerous. At most, it may cause a local reaction
around the bite site. Normal precautions, as outlined in
the introduction, should be observed.