I'm not sure if this is Eulechria electrodes Ian. It has shorter palpi, the wings are not quite the right shape and it has very faint darker markings on the wings. I was looking at Tachystola and Heteroteucha but could not find anything that matches.
Telocharacta hemicroca a possibility given many haves stronger markings in that forewing location (many on the ALA don't show markings) - although this moth seems to have two indistinct parallel markings - and strongly tapered forewing apex.