1 8 6 1 ▁is ▁larger ▁and ▁found ▁in ▁sout he astern ▁China ▁and ▁Taiwan . ▁Sub species ▁jav an ensis ▁described ▁by ▁Dum ont ▁in ▁ 1 8 1 8 ▁is ▁smaller ▁and ▁found ▁across ▁the ▁larger ▁islands ▁along ▁the ▁Mal ay ▁Pen ins ula ▁extending ▁east ▁to ▁the ▁Philippines . ▁Some ▁island ▁forms ▁are ▁larger ▁and ▁these ▁include ▁sar as in orum ▁described ▁by ▁Str es emann ▁in ▁ 1 9 1 2 ▁and ▁found ▁on ▁Sul aw esi , ▁the ▁S ula ▁Islands , ▁L esser ▁Sund as ▁and ▁Tim or . ▁The ▁form ▁on ▁the ▁Mol u cc as , ▁med ius ▁described ▁by ▁Bon ap arte ▁in ▁ 1 8 5 0 , ▁is ▁the ▁largest . ▁Some ▁other ▁sub species ▁like ▁phil pp in ensis ▁from ▁the ▁Philippines ▁and ▁cham n ong i ▁from ▁Th ailand ▁are ▁not ▁always ▁recognized ▁and ▁are ▁thought ▁to ▁form ▁either ▁variants ▁or ▁intermediate ▁pl um ages . ▁The ▁population ▁patch ily ▁distributed ▁in ▁the ▁Western ▁Gh ats ▁of ▁southern ▁India ▁may ▁const itute ▁a ▁distinct ▁sub species . ▁ ▁Tax onomy ▁and ▁system at ics ▁In ▁the ▁past , ▁this ▁species ▁was ▁l ump ed ▁along ▁with ▁the ▁Mal ag asy ▁cou cal ▁( Cent rop us ▁t oul ou ) ▁but ▁comparison ▁of ▁DNA ▁sequences ▁suggest ▁that ▁the ▁less er ▁cou cal ▁is ▁more ▁closely ▁related ▁to ▁the ▁black ▁cou cal ▁( Cent rop us ▁gr ill ii ) ▁and ▁Philipp ine ▁cou cal ▁( Cent rop us ▁vir id