Transitory things (8)
I believe the answer is:
ephemera
'transitory things' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ephemera that I've seen before include "Fleeting things" , "Passing items" , "Something that lasts or is useful for only a short time" , "items not lasting long?" , "Insect with wings" .)