▁was ▁obtained ▁on ▁a ▁survey ▁of ▁South west ▁Australia , ▁along ▁with ▁several ▁other ▁bat ▁species . ▁ ▁The ▁lect ot ype , ▁a ▁sk ull ▁held ▁at ▁British ▁Museum ▁of ▁Natural ▁History , ▁was ▁nominated ▁in ▁ 1 9 6 8 , ▁providing ▁a ▁single ▁spec imen ▁from ▁the ▁material ▁collected ▁by ▁Thomas . ▁ ▁Thomas ▁as cribed ▁the ▁species ▁as ▁P ip ist rell us ▁reg ulus , ▁al lying ▁it ▁to ▁the ▁genus ▁P ip ist rell us . ▁The ▁species ▁has ▁also ▁been ▁placed ▁with ▁genus ▁E pt es icus . ▁Prior ▁to ▁analysis ▁that ▁led ▁to ▁the ▁description ▁of ▁new ▁species , ▁the ▁population ▁was ▁assigned ▁to ▁a ▁poor ly ▁studied ▁p um ilis ▁group ▁of ▁Australian ▁bat ▁tax a . ▁Tax onom ic ▁inst ability ▁also ▁saw ▁the ▁species ▁placed ▁within ▁a ▁sub gen us ▁P ip ist rell us ▁( V es pad el us ), ▁while ▁others ▁were ▁elev ating ▁that ▁tax on ▁as ▁genus ▁V es pad el us . ▁ ▁The ▁tax onom ic ▁status ▁of ▁the ▁population ▁west ▁of ▁Ad ela ide , ▁South ▁Australia , ▁is ▁sus pected ▁to ▁be ▁a ▁separate ▁species . ▁ ▁Common ▁names ▁for ▁the ▁V es pad el us ▁reg ulus ▁include , ▁little ▁bat , ▁King ▁River ▁little ▁bat , ▁and ▁King ▁River ▁pip ist rel le . ▁ ▁Description ▁ ▁V es pad el us ▁reg ulus ▁is ▁an ▁aer ial ▁pred ator ▁of ▁insect s ▁that ▁hun ts ▁at ▁night ▁using ▁e ch