Acantharadus flora sp. n. and Kema pamae sp. n. (Hemiptera: Heteroptera: Aradidae: Mezirinae) from Halmahera Island, Indonesia are described and figured. Photos of the male holotypes of K. bloetei Usinger et Matsuda, 1959 and K. papuasica Kormilev, 1971 and non-type females of A. quaternarius (Bergroth, 1886), male and female of K. acutissima Kormilev, 1971 as well as a female of K. lobulata (Kormilev, 1953) are presented, with comments and a key to Kema species. A. quaternarius is reported from Sumatra for the first time. [ABSTRACT FROM AUTHOR]