Eutricha caterpillar ID help

Some of the Eutricha pillars are a bit tricky to tell apart especially:
E. capensis
E. bifascia
E. obscura

Distribution helps:

E. capensis & E. bifascia occur along the southwestern Cape coast from Paternoster down to the peninsula and east to Gqeberha.
E. obscura occurs eastwards from around Kenton-on-Sea up the KZN coast, then inland to PMB, Pretoria and Kruger NP.

I am working on a map, but in so doing am finding several incorrect IDs. Once the map is cleaner I'll put it here.

HELPFUL PICTURES

Photo credits: E. bifascia (top to bottom) @felix_riegel @sallyslak @simphiwe_siphosethu | E. capensis @hyperolius @mariedelport