micro Elachista

As it rained last night I only had 3 macros (not counting the Poplar HM which escaped from Coed Y Bont by sliding down the ventilation slit at the bottom of the windscreen inside the van and which Bri rescued; though he didn't recover about four dozen pencils I've lost down that gap) so I was pleased to catch this little chap before it got squashed in the egg boxes.
Ina, am I safe to say this is atricomella as it measures 6mm,  doesn't have a white head and has plenty of cocksfoot in our garden to feast on?