Abstract
The web structure of the two Nephila species, N. clavata and N. maculata, were compared. The juvenile webs of the two species had the same structure except for the form of the barrier webs. Their main webs resembled the normal orb-web.
However, there were some differences in the adult female web of the two species. The web of N. clavata was more assymmetric than that of N. maculata. The web of N. clavata had the branched radii, the divided radii and the barrier constructions, while the web of N. maculata never had the divided radii and the barrier webs, but they had the branched radii only. These differences suggested that the web of N. clavata was more specialized than that of N. maculata, and that the Nephila species derived from the ordinary orb weaving ancestor.
