Illustrated key to the genera included in the tribe Acanthocephalini (Hemiptera Heteroptera: Coreidae: Coreinae), with descriptions of three new genera, seven new species, new taxonomic rearrangements, and a key to genera of Placoscelini Author Brailovsky, Harry text Zootaxa 2021 2021-12-21 5082 5 457 475 journal article 2716 10.11646/zootaxa.5082.5.4 3fa676b0-872a-41c6-85ea-dacfab4e216a 1175-5326 5794957 D46E05BA-53A9-4284-984D-F85477D1998C Key to the known species of Antipetalops gen. nov. 1 Pronotum including the collar pale orange, with posterior margin black; antennal segment IV uniformly dark castaneous orange; dorsal abdominal segments black with median pale yellow longitudinal stripe running from III to mid third of segment VII; head dorsally and ventrally black with the space between eye and ocelli, and narrow longitudinal stripe running between ocelli to base of post-tylar sulcus yellow ( Fig. 4 ).............................................. A. colombianus sp. nov. - Pronotum dark brown with anterior third included the calli castaneous orange; antennal segment IV brown with wide castaneous orange ring near middle third; dorsal abdominal segments III–VI pale orange, VII–IX black; head dorsally and ventrally pale castaneous orange ( Fig. 5 )............................................................... A. discretus sp. nov.