this does not match the aedeagus in Brown, at least not the way I see it. The median lobe of accidentalis in Brown has a broadly-rounded apex and is slightly compressed medially, whereas yours seems to evenly taper to a broad yet still somewhat subacute apex. Also, the color of the beast doesn't match Brown's description (I wouldn't worry too much about that). The aedeagus shown here doesn't look like any of the Idolus...that being said I have never been a fan of Brown's hand-drawn illustrations (some of the Dalopius aedeagi are hard to interpret too...)

Just to be safe, have you ruled out Dalopius? Althouth the supra-antennal carinae do not look like a Dalopius...

Perplexing. I hope we can just assume Brown's illustrations are bad?

Moved from Click Beetles.