predaceous diving beetle

5805   Hi. My name is Tim, and I am located in Hanwell, New Brunswick. I found this dried out husk in my patio door track. I believe it may be a dried out, deflated June Bug, but I wanted to make sure it wasn’t something nasty that got into my house. It appears to be a very dark green with a split down it’s back. It is a large specimen.  This is a very useful site. I have identified many strange looking bugs here. A great resource to have.  – Tim –

This is a predaceous diving beetle (Coleoptera: Dytiscidae), likely either Cybister fimbriolatus or Dytiscus verticalis (the distinguishing characters cannot be seen in this image. These beetles and their larvae (water tigers) are general predator on other small aquatic life forms, usually other insects, but occasionally small minnows and tadpoles. The adult beetles are strong fliers, and often can be found quite some distance from the nearest water. Ed Saugstad, retired entomologist; Sinks Grove, WV.