My cat just found this beastie outside on the gravel. I figured it was one of them swimming beetles because of the shape of his/her rear legs. I tested this out in my bathroom sink and it went straight for the bottom. He has a lovely green shine under the right light.
Could you please tell me what it is and a little About it.
Ps he/she was found in wicklow, Ireland.
This is a great diving beetle, Dytiscus marginalis.
The grooving on the back shows this is a female.
There are actually about 100 species of Dytiscus in the British Isles (out of 150 in Europe), and yours is one of the largest. it is a ferocious carnivore (the larve even more so), so beware having them in a garden pond where you want tadpols, frogs, newts and even small fish to survive!
Thanks for the correction; my mistake; I was quoting from Chinery (1993; 3rd ed.) re Dytiscidae - the family not the genus. 'Twas 2:15am here in Cyprus - that's my excuse for being lax in my consideration of what I was writing. Must do better!