Signature Spider

Argiope luzona (Walckenaer, 1841). All of these very tiny juvenile Argiope luzona spiders were spotted on the same clump of bamboo, yesterday morning. I have not yet identified the bamboo, but will do so and edit this spotting to include the ID. For now, all I can say is that it is a Sympodial (Clumping) Bamboo and has around 30 to 40 Culms (stems). The reason for mentioning some detail of the bamboo, when this is a spotting of Argiope luzona spiders, is to make it easy to envisage the habitat of these spiders. As you know, I can only post six pictures pictures on this spotting page, but there were more than six of these spiders on the bamboo. The spiders (at least the ones that I saw) were all approximately between 4ft. and 5ft. from the ground and spaced out around the clump. In other words, there were none that I saw on adjacent stems and I am pretty sure that they did not have line-of-sight to each other. I have no idea if this has any significance, but it all looked as if it was meant to be like that, rather than purely random. The spiders were all easy to identify as females because the male's cephalothorax is always bigger than its abdomen and that is not the case here. Even the spider in picture #5 (which was on the back of its web) can be seen to be female because its outline shape can just be discerned. I am not sure if these juveniles are siblings, but it is possible despite the fact that they are of slightly varying sizes. I think that those which get more prey to eat probably develop quicker. Each of them has a "discoid" stabilimentum (web decoration) of the same general style and size, with only minor differences. I did a rough measurement on each using a small ruler, as you can see in the last picture.