Table 1 in The Oriental genera of Xyloperthini (Coleoptera: Bostrichidae: Bostrichinae), with a new genus and species from Thailand, and a key to the genera

Table 1. Comparison of characters of Infrantenna gen. nov. with selected genera of Xyloperthini Lesne, 1921.
GenusCharacterInfrantenna gen. nov.Psicula Lesne, 1941Xylion Lesne, 1941Xylobosca Lesne, 1901Xyloblaptus Lesne, 1901Xylopertha Guérin-Méneville, 1845No. of antennal segments10910101010Antennal fossa insertionBelow fronto-clypeal suture.Above fronto-clypeal suture.Above fronto-clypeal suture.On fronto-clypeal suture.Above fronto-clypeal suture.Above fronto-clypeal suture.Long hairs on fronsXDirected upwardlyXDirected upwardly, long to very long in female, short or absent in male.Long upwardly at sides, short upward in middle.Directed upwardlyPosterior angles of pronotumWithout lateral carinaWithout lateral carinaWith lateral carinaWithout lateral carinaWithout lateral carinaWithout lateral carinaPleural piecesVXVVXVShape of disc of elytral declivityMale: concave Female: convexMale: concave Female: convexSlightly convexMale: concave Female: convexSlightly, evenly concaveMale: weakly to strongly concave Female: convexSculpture of apical margin of declivityMale: with a small V-shaped emargination at apex. Female: apex of each elytron strongly emarginate, emargination filled by a pair of ventrally- directed processes next to suture.Male: without an apical emargination. Female: apex of each elytron strongly emarginate, emargination filled by a pair of ventrally- directed processes next to suture.Both sexes with deep emargination at apex and rised tip.Male: not emarginate at apex Female: emarginate.Entire, raised slightly at apex.Male: with a small V-shaped emargination at apex. Female: apex of each elytron strongly emarginate.Modified ventrites of female abdomen5th ventrite strong emarginate in middle posteriorly.5th ventrite strong emarginate in middle posteriorly.Variously modified from 3rd to 5th ventrites, strong emargination at posterior margin of 5th ventrite1st ventrite enlarged; 4th and 5th ventrites emarginate in middle posteriorly; 4th ventrite with a pair of spines in some species.5th ventrite strong emarginate in middle posteriorly.5th ventrite variously modified.ProtibiaWider at apex than in middle, external face broadly grooved.Widest close to apex, external face flattened.Widest at apex, external face more or less fl attenedWidest towards middle, without a flat external faceWidest towards middle, without a flat external faceWidest at apex, grooved on external faceGeographical distributionNorthern ThailandIndia and ThailandAfricaAustraliaUSA and MexicoMediterraneanCharacterCalonistes Lesne, 1936Infrantenna gen. nov.Octodesmus Lesne, 1901Octomeristes Liu & Beaver, 2016Paraxylion Lesne, 1941Psicula Lesne, 1941No. of antennal segments101088109Sensory impressions on clubWithout distinct impressions, only areas with denser pores.Two zones of concentration of sensory pores on 1st and 2nd antennomeres of club.Dense sensory hairs along anterior margin on 1st and 2nd antennomeres of club.Dense sensory hairs along anterior margin on 1st and 2nd antennomeres of club.Dense sensory hairs along anterior margin on 1st and 2nd antennomeres of club.Without distinct impressions, only areas with denser pores.Clypeus armed on sidesXXXXXXLong hairs on fronsXXXVVVLateral carinae of pronotumXXXXXXPleural piecesXVXVVXShape of disc of elytral declivityConcave evenlyMale: concave Female: convexSlightly concaveWeekly convexFlattenMale: concave Female: convexSculpture of apical margin of declivityEntire, raised slightly at apex.Male: with a small V-shaped emargination at apex. Female: apex of each elytron strongly emarginate, emargination filled by a pair of ventrally- directed processes next to suture.Rised with a tiny V-shaped emargination.EmarginatedEntireMale: without an apical emargination. Female: apex of each elytron strongly emarginate, emargination fi lled by a pair of ventrallydirected processes next to suture.Modified ventrites of female abdomen4th ventrite extended over 5th as a thin, leaflike, plate, convex ventrally. The middle part of the 5th ventrite,slightly emarginate5th ventrite strong emarginate in middle posteriorly.X3rd ventrite projecting over and concealing fourth ventrite, its posterior margin with lobes or teeth.X5th ventrite strong emarginate in middle posteriorly.ProtibiaExpanded from base to apex, external face convex.Wider at apex than in middle, external face broadly grooved.Wider at apex than in middle,external face flattened.Wider at apex than in middle, external face flattened.Expanded from base to apex, external face grooved.Widest close to apex, external face flattened.DistributionMalaysia and ThailandNorthern ThailandIndia and BurmaIndia and ThailandIndia and Southeast AsiaIndia and Thailand