Lesser diving beetle Acilius sulcatus
![Lesser diving beetle Acilius sulcatus natural history illustration by Lizzie Harper](https://lizzieharper.co.uk/wp-content/uploads/2018/09/lesser-diving-beetle-496x525.jpg)
Lesser diving beetle Acilius sulcatus pointing downwards with water weed behind, hind legs outstretched to show how they resemble oars
Lesser diving beetle Acilius sulcatus pointing downwards with water weed behind, hind legs outstretched to show how they resemble oars