Okay, the links in the adjacent photos show several views, including anal ventrite, as if it were of some special significance in keying this genus. I've shot the same view of this beetle and I can't say I know what I'm supposed to be looking for. It clearly doesn't have the two yellow patches on it that the Harvard specimen of T. alacris shows, although it does seem to have the same upturned lip at the trailing edge. I'm open to suggestions on how I should be comparing images.