A species of damselfly never found before on the Isle of Wight was discovered this summer near Yarmouth.
With only a toe-hold at a few sites in England, the detection of a new breeding population is a significant discovery for the species in the UK.
Since the initial find, further investigation work has also unearthed photographs which show the southern emerald damselfly to have been present on the Island since 2015 but it had gone unnoticed until now.
It is one of four species of emerald damselflies found in the UK, all of which look very similar. However, subtle differences in body markings allow a trained eye to tell these dainty insects apart.
Adrian Parr, migrant dragonfly project co-ordinator for the British Dragonfly Society, said: "This is a very important find, of a species that first appeared in Britain only as recently as 2002."