Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
rove beetle - Stenus clavicornis

rove beetle - Stenus clavicornis
Groton, Middlesex County, Massachusetts, USA
April 30, 2010
Size: 5.6mm

Moved from Stenus.
Thanks Adam, these Stenus species seem to be hard to identify.

They are, with the exception
They are, with the exception of a few relatively distinct species. Most of the differences between species are readily seen in good photos but I have not amassed enough material for a reference collection..
Maybe one day

This is Stenus clavicornis, a
This is Stenus clavicornis, an introduced species.