Spiders are commonplace in live and everybody have had flatties in their homes that sometimes (not always) get ignored as they are totally harmless. But every now and then one makes their way into the house you just can't ignore, even if they are relatively harmless. Who has never found a rain spider in a corner or behind a curtain and not just about freaked. The Common Rain Spider (Palystes superciliosus) is a species of huntsman spider commonly and widespread found in South Africa. But this post isn't really about the actual rain spider but rather its "nest." I have often found people see a rain spider egg sac and not know what it is.
After mating in the early summer, the female rain spider constructs a round egg sac about 60–100 mm in size made of silk, with twigs and leaves woven into it. I've even found one in Addo with a sugar packet woven into the mix.
These egg sacs are commonly seen from about November to April. The female constructs the sac over 3–5 hours, then aggressively guards it until the spiderlings, who hatch inside the protective sac, chew their way out about three weeks later. Have a careful look at the first picture and you will see that the baby spiders have exited the egg sac Females will construct about three of these egg sacs over their two year lifespan.