Pectinivalva mystaconota is a moth of the Nepticulidae family. It is known from scattered localities in eastern Australia from Wellington, New South Wales south to Mount Nelson, Hobart, Tasmania. The wingspan is 5.8-7.6 mm for males and 7.5-8.0 mm for females. The thorax and forewings are blackish fuscous and weakly shining. The hindwings are clothed in dark brown scales with iridescent reflections.