On 27 April I wrote about a Red Data Book water beetle Dytiscus dimidiatus, click here, a species that occurs frequently in the RX area. It can really only be confused with one other Britsh water beetle, as they are the only large great diving beetles with the cream margins confined to the outer edge of the body. The other species, Dytiscus semisulcatus is one of the more widely distributed British water beetles, occurs in our area, and is distinctive because it has a black ventral surface. It is also a smaller insect, measuring 22-30mm in length.
This water beetle Read the rest of this entry »