Tubercle on the pronotum distinctly raised (as in punctatum), viewed from the side steeply sloping towards the base (Fig 7). Elytra not starting to slope until within the rear third with each elytron bluntly truncate at the tip. Very similar to Anobium punctatum when viewed from above.
...Hemicoelus LeConte, 1861
Tubercle on the pronotum less clearly expressed not laterally compressed and only gently sloping towards the rear [Abb.9]. Each elytron rounded to a point at the tip [Abb.10]. Elytra (when viewed from the side) beginning to gently slope from just beyond the middle.
...Cacotemnus LeConte, 1861