Habitat:
Sphingonotus imitans inhabits coastal dunes (early stages with only scarce vegetation).
Life cycle:
The adults occur between June and October, perhaps even later. I found them in troops at the Cabo de Trafalgar while similar dunes seemd to be devoid of Sphingonotus imitans.
Endangerment factors:
Sphingonotus imitans is endangered by the extreme tourism and overbuidling of coastal zones. It will probably survive only in nature reserves.
Remarks:
Sphingonotus imitans is endemic to the Atlantic coast of Portugal (especially Algarve) and SW-Spain (Huelva to Cadiz).