1 9 ▁species . ▁Some ▁sources ▁also ▁recognize ▁Kal ou la ▁macro ce ph ala ▁Bour ret , ▁ 1 9 4 2 ▁as ▁a ▁valid ▁species , ▁whereas ▁the ▁Am ph ib ian ▁Species ▁of ▁the ▁World ▁tre ats ▁it ▁as ▁a ▁syn onym ▁of ▁Kal ou la ▁pul ch ra . ▁ 5 ▁new ▁species ▁have ▁been ▁described ▁since ▁ 2 0 0 0 , ▁and ▁there ▁are ▁un named ▁species ▁yet ▁to ▁be ▁described . ▁ ▁Kal ou la ▁pul ch ra , ▁Kal ou la ▁p ict a , ▁and ▁Kal ou la ▁bore alis ▁are ▁the ▁most ▁w ides p read ▁and ▁commonly ▁found ▁vari eties , ▁often ▁living ▁near ▁human ▁settlement s . ▁ ▁Black burn , ▁et ▁al . ▁( 2 0 1 3 ) ▁lists ▁several ▁Kal ou la ▁vari eties ▁that ▁are ▁likely ▁to ▁be ▁new , ▁previously ▁und es cribed ▁ ▁species . ▁Kal ou la ▁sp . ▁nov . ▁Pal aw an : ▁Cl os ely ▁related ▁to ▁Kal ou la ▁b ale ata . ▁Record ed ▁in ▁Pal aw an . ▁Kal ou la ▁sp . ▁nov . ▁Sul aw esi : ▁Cl os ely ▁related ▁to ▁Kal ou la ▁b ale ata . ▁Record ed ▁in ▁the ▁T og ian ▁Islands ▁( B at ud aka ▁Island ), ▁Central ▁Sul aw esi , ▁and ▁North ▁Sul aw esi ▁( B og ani ▁N ani ▁W art ab one ▁National ▁Park ). ▁Kal ou la ▁sp . ▁nov . ▁Sib uy