Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ebe ọ na-aga: P. m. dilutus, nke Charles Wallace Richmond kọwara n'afọ 1856, bi n'ebe ugwu ọwụwa anyanwụ Iran, n'ebe ugwu Pakistan nakwa n'ebe ugwu ọdịda anyanwụ India. A na-ahụkwa ya n'ebe ugwu, site na Uzbekistan na Tajikistan ọwụwa anyanwụ ruo China. E jiri ya tụnyere P. m. montanus, ọ na-acha ọcha, na-acha aja aja.  Ajụjụ: Olee ihe ndị na-egosi na P.m. dilutus dị iche na P.m. montanus?
na-acha ọcha, na-acha aja aja na-acha aja aja