▁ ▁It ▁inhab its ▁l ago ons ▁p onds ▁and ▁sw amps ▁across ▁northern ▁Australia . ▁ ▁Ident ification ▁ ▁The ▁L - spot ▁b ask er ▁A eth ri am anta ▁n ym pha e ae ▁and ▁Square - spot ▁b ask er ▁A eth ri am anta ▁circum sign ata ▁are ▁very ▁similar ▁drag on f lies ▁and ▁can ▁be ▁difficult ▁to ▁separate . ▁The ▁common ▁name ▁describes ▁dark ▁mark ings ▁at ▁the ▁base ▁of ▁the ▁h ind wing ▁of ▁each ▁species . ▁The ▁L - spot ▁b ask er ▁usually ▁has ▁one ▁dark ▁brown ▁fle ck ▁radi ating ▁between ▁the ▁fourth ▁and ▁fifth ▁ve in ▁( C u ▁and ▁A ) ▁and ▁a ▁small ▁dark ▁patch ▁at ▁right ▁angles ▁which ▁occup ies ▁a ▁few ▁cells ▁parallel ▁to ▁the ▁ab d omen . ▁These ▁marks ▁form ▁the ▁L ▁shape . ▁A ▁l ighter ▁brown ▁surr ounds ▁the ▁dark ▁marks ▁and ▁may ▁extend ▁to ▁the ▁ar cul us ▁and ▁h ind wing ▁margin . ▁Light ▁brown ▁marks ▁may ▁also ▁exist ▁at ▁the ▁base ▁of ▁the ▁for ew ing . ▁In ▁some ▁examples ▁of ▁the ▁L - spot ▁b ask er , ▁the ▁dark ▁mark ings ▁may ▁be ▁absent ▁altogether . ▁ ▁Gallery ▁ ▁See ▁also ▁ ▁List ▁of ▁Od on ata ▁species ▁of ▁Australia ▁ ▁References ▁ ▁Category : Lib ell ul idae ▁Category : O don ata ▁of ▁Australia ▁Category : In sect s ▁of ▁Australia ▁Category : End em ic ▁fa una ▁of ▁Australia ▁Category : T ax a ▁named