Rüppell's or the greater broad-nosed bat (Scoteanax rueppellii) is a species of vespertilionid microbat found in eastern Australia.

[2][5] The species was later recognised as sole type of the genus Scoteanax, first described by Ellis Troughton in his standard book of Australian mammals published in 1944.

[8] The species slowly forages at streams or forest edges for larger prey, mainly insects such as flying beetles, or smaller invertebrates, with a languid motion that is restricted in its agility during pursuits.

The preferred habitat is below 500 metres in the southern part of the range, in New South Wales, although the species is only found at higher elevations in the northern tableland regions.

[7] The distribution range is poorly understood, and previous assumptions were challenged in a 2006 study that reviewed records and estimated the restrictions to occurrence of the species.

The reported constraint by altitude or climatic conditions, or restriction to heavily wooded regions was not supported in the findings, and hypotheses for the distribution for S. rueppellii remain unverified.