St. Andrews Cross

Fact Box Species: Argiope keyserlingi (QM) Previous species name: Argiope aetherea Family: Araneidae formerly Argiopidae Body length: female: 14 mm male: 5 mm Habitat: This spider clings to the underside of a roughly circular web between the branches of small shrubs with a pair of legs on each arm of a white cross of silk in the centre of the web; the male usually builds a small web close to that of the female Toxicity: This spider is rather timid and non-aggressive and seems to be harmless to humans in that it is very common yet very few human bitings by it are on record

Stabilimentum Egg sac, spiderlings Underneath female Male and female The male Juvenile and web Stabilimentum

The common name of this species is derived from its habit of producing and resting on a stabilimentum, which is a cross of serrated (zigzag) silk. In one season an adult female will produce several leaf-like, green egg sacs, these being attached to a wall or tree trunk in close proximity to the web.

Males lack the bright colours of the females and are much smaller. Juveniles are also pale and reside on very small circular webs which can often be found in quite large numbers.

Spider(s) with a very similar appearance: Argiope picta and Argiope magnifica.