The only described species Anarrhotus fossulatus is endemic to Malaysia. It is one of several monotypic genera from Southeast Asia where, despite their first description dating back more than a hundred years, there are no habitat details, although genital and sometimes other drawings are now available for several of them.
The only known species, Anarrhotus fossulatus, is found exclusively in Malaysia.  Despite being described over a century ago, this genus from Southeast Asia has no detailed information about its habitat. However, drawings of the genitalia and sometimes other features are now available for several of these genera.