Great diving beetle Dytiscus marginalis
![Great diving beetle Dytiscus marginalis natural history illustration by Lizzie Harper](https://lizzieharper.co.uk/wp-content/uploads/2018/09/great-diving-beetle-363x525.jpg)
Great diving beetle Dytiscus marginalis showing dark green colour and yellow thorax margin, blue background to show sub aquatic habitat
Great diving beetle Dytiscus marginalis showing dark green colour and yellow thorax margin, blue background to show sub aquatic habitat