@NateKingsford Thanks Nate. The clarification is great as I think some of my sightings may have a mix of the two spiders where I have found them in the same area or on the same tree. I looked at a Wiki site so thanks for the reference to World Spider Catalogue. I'll try to differentiate the two.
Hey @AlisonMilton, the ACT only has 2 species, which can be distinguished by the colouration. Most of the Tamopsis species would need to be examined under a microscope, yes. T. fickerti always has the dark 'stripes' down the side and the middle, no matter where it is found. T. eucalypti is always pale with no real discerning patterns. If this spider was found elsewhere, I'd be hesitant to ID it to species level, however I'm very familiar with the species within the ACT. I'm not sure if you're familiar, but that's a website called "World Spider Catalogue", it contains basically all scientific papers regarding spiders. This would be a much better place to get info rather than just a Google search, however I do get the convenience of it