Antlion Euroleon nostras
Antlions look like a cross between a lacewing and a dragonfly, their larva dig distinctive conical pits in soft sand. The larvae themselves are rarely seen either as they remain hidden beneath the sand, waiting expectantly for an unsuspecting ant to tumble into the pit. Image: Pete Etheridge (Flickr).
Find out more: iNaturalist, RSPB – Antlion blog post