Simon Carmichael had ID'ed this to genus but I had obstinately and futilely demanded some inkling of how he knew. I am glad to have it confirmed by a recognized authority.

Had to fish around in my pickling vat for it :-)

Coptotomus sp.

Although this identification seems reasonable, I am interested in how you know this to be Coptotomus. There are several ways of providing this information, any one of which would normally suffice.

First, you could write a little about your background on your personal profile page, reachable by clicking on your name. For instance, if you have (or will soon have) a degree in entomology, are a longtime collector, etc., that could add weight to your comments.

Otherwise, pointing out which features in a photo image indicate which taxon the subject belongs to can be very helpful.

Often you can include an active link to an Internet reference or photo page on this or some other Web site for comparison.

Finally, if you cite one or more reference works that were used in determining placement, that can help assure others that the placement is correct.

I know this is more work than simply declaring or suggesting a taxon and I am guilty of not always providing a basis for determination in my comments. Hopefully writing this will help me remember to do it more faithfully :-)