Great Diving Beetle?

Great Diving Beetle?

Observation - Great Diving Beetle?. Description: This beetle was caught in a moth-trap by Dave Wilton, and he's asked if we can confirm the species. It seems to key out as Dytiscus marginalis but we're not sure. Are the underside shots sufficient to confirm it?

This beetle was caught in a moth-trap by Dave Wilton, and he's asked if we can confirm the species. It seems to key out as Dytiscus marginalis but we're not sure. Are the underside shots sufficient to confirm it?