Topic: Too many records of the water beetle Helochares obscurus ?
The number of dots on the NBN map of H. obscurus is vastly greater than in the 2016 published atlas. Many of the extra records are from Local Record Centres so I am mentioning it here as a way of suggesting LRCs should have a critical look at their records of this rare fenland species. It wasn't until 1982 that the three species were recognised in Britain but the name obscurus was in use here earlier than that.