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Egg sacs are variable in size, usually containing over 100 eggs, with larger ones holding over 400. The spiderlings undergo their first molt while still in the sac. [ 2 ] In one small laboratory sample, the life span of the male averaged 465 days, and that of the female was 580 days.
The Australian funnel-web spider is considered one of the world's deadliest arachnids. Its venom can kill a human within 15 minutes, Dr. Robert Raven, curator of arachnids at Queensland Museum ...
Argiope aurantia is a species of spider, commonly known as the yellow garden spider, [2] [3] black and yellow garden spider, [4] golden garden spider, [5] writing spider, zigzag spider, zipper spider, black and yellow argiope, corn spider, Steeler spider, or McKinley spider. [6] The species was first described by Hippolyte Lucas in 1833.
The egg sacs differ fairly widely among the various genera. For example, in Heteropoda spp. egg sacs are carried underneath the female's body, while in other species like Palystes and Pseudomicrommata spp., females generally attach egg sacs to vegetation. [20]
Stegodyphus dumicola, commonly known as the African social spider, is a species of spider of the family Eresidae, or the velvet spider family. It is native to Central and southern Africa . This spider is one of three Stegodyphus spiders that lives a social lifestyle ( S. lineatus , S. mimosarum , and S. dumicola ).
The egg sac is off-white, tan, or blue in color. After this carrying period, the egg sac is torn and spiderlings emerge. These spiderlings are still carried by their mother for 3 to 24 days. The size and weight of these egg sacs make it harder for the female to attack prey and avoid predators. Occasionally, female shore spiders drop their egg ...
Agroeca brunnea is a species of spider in the family Liocranidae.It is found in the Palearctic realm and was first described by John Blackwall in 1833. [1]The distinctive egg sacs are known colloquially as 'fairy lamps' [2] and the spider itself is sometimes called the 'fairy lamp spider'.
The females have up to 13 egg sacs, with about 200 eggs each, strung together with strong threads. Their toxicity is unknown, but may be able to cause mild illness in humans. Celaenia excavata is found throughout large parts of eastern and southern Australia and have also been recorded in central Australia; they are also seen in suburban gardens.