"Jurassic Park" mosquito preserver (5)
I believe the answer is:
resin
'jurassic park mosquito preserver' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for resin that I've seen before include "Sticky stuff as from pine tree" , "Synthetic substance" , "Myrrh, for instance" , "Sticky exudation from trees" , "Plant exudation" .)