Wow, a lot of people armchair quarterbacking on how these Wikipedia articles should be structured. BOZ, I hope you're not operating on a
vox populi, vox dei model, since you're the one actually constructing and managing these articles.
Anyway, Pathfinder has some additional lamia material in some of its early adventure path releases.
Pathfinder #2: The Skinsaw Murders has stats for the
lamia matriarch (see also
here). Pathfinder #6: Spires of Xin-Shalast has stats for the
kuchrima lamia,
harridan lamia, and the artificially-created
hungerer lamia (these are the other forms of lamia hinted at in the Pathfinder Bestiary).
Pathfinder #6 also talks about the
lamyros (the collective name for lamia-kin), as well as their society and religion.