Setirostris

Setirostris eleryi is a species of small insectivorous bat found in inland eastern Australia. It is the sole species of the molossid genus Setirostris, a name that refers to the coarse bristles on their faces. Earlier common names have referred to this unique feature, and the 'free-tail' that is a common feature of its microchiropteran family, the Molossidae; no single common name emerged during the taxonomic revisions that identified what was referred to as the bristle-faced freetail.

Setirostris eleryi differs from all other bats in the family by possessing unique dentition and genital morphology, a distinctive echolocation call structure, and notably smaller body size of around 5 grams (0.18 ounces). The presence of stout bristles on the thin muzzle and face of S. eleryi distinguishes them from similar genus Ozimops, once regarded as "Mormopterus species", that previously included parts of the population. The description, first published in 2008, emerged from a comparison of morphological features with an earlier phylogenetic analysis that had indicated cryptic species amongst this poorly-known group of bats.

Setirostris eleryi may be widely distributed across inland Australia, ranging from very arid to moister subtropical regions. However, it is locally uncommon across its range, and only known to inhabit riparian zones and floodplains. During the day these bats roost in tree hollows of mature eucalypts, but are noted as squeezing themselves into other tiny crevices. They form colonies of up to twenty individuals, which often include bats of other species.