I think I mentioned 2.4 for that C. amazonica, with 1.4 being the second smallest non-Scarabaeinae scarab beetle. That's literature though, I have no equipment for accurately measuring my own specimens.
Was away at Road America, Wisconsin for the past couple of weeks.
There are numerous dung beetles in the range of 2 mm in length (eg. Panelus, Odontoloma, Haroldius, Caeconthobium etc...). Not too many species fall under 2 mm in length. Keith mentioned Haroldius convexus at 1.78mm. In addition: Boheplissus subtilis (Boh.) ranges 1.7 - 2.5 mm and Lepanus pisoniae (Lea) at 1.6 - 2.4 mm. Auke mentioned Canthonella amazonica at 1.4 mm. I didn't have a chance to check Canthonella, but I'm sure 1.4 mm is probably about the lower size limit.
>>> Trond Larsen <[log in to unmask]
> 2013-09-12 11:12 AM >>>
Does anyone know what is the world's smallest dung beetle species, and how large it is?