9 5 0 ▁ ▁The c ac era ▁pac ifica ▁Berg h , ▁ 1 8 8 3 ▁ ▁The c ac era ▁p enn ig era ▁( Mont agu , ▁ 1 8 1 5 ) ▁ ▁The c ac era ▁p ict a ▁B aba , ▁ 1 9 7 2 ▁ ▁The c ac era ▁v ires c ens ▁Ald er ▁& ▁Han cock , ▁ 1 8 5 1 ▁ ▁The c ac era ▁vitt ata ▁Y on ow , ▁ 1 9 9 4 ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁video ▁of ▁The c ac era ▁pac ifica ▁ ▁Category : Pol y cer idae <0x0A> </s> ▁P isen or ▁is ▁a ▁genus ▁of ▁African ▁br ushed ▁trap door ▁sp iders ▁first ▁described ▁by ▁Eug ène ▁Simon ▁in ▁ 1 8 8 9 . ▁ ▁Species ▁ ▁it ▁contains ▁nine ▁species : ▁P isen or ▁ar ct urus ▁( T ucker , ▁ 1 9 1 7 ) ▁– ▁Z imb ab we ▁P isen or ▁le le up i ▁( B eno it , ▁ 1 9 6 5 ) ▁– ▁Congo ▁P isen or ▁le pid us ▁( G erst ä cker , ▁ 1 8 7 3 ) ▁– ▁T anz ania ▁P isen or ▁ma ce que ce ▁( T ucker , ▁ 1 9 2 0 ) ▁– ▁Moz amb ique ▁P isen or ▁not ius ▁Simon , ▁ 1 8 8 9 ▁( type ) ▁– ▁Eth iop ia ▁to ▁Z imb