A new Trogoderma from Madagascar (Coleoptera: Dermestidae: Megatominae) with a key to Madagascan species of the genus Author Háva, Jiří Forestry and Game Management Research Institute, Strnady 136, CZ- 156 00 Praha 5 - Zbraslav, Czech Republic. & Private Entomological Laboratory & Collection, Rýznerova 37 / 37, Únětice u Prahy, CZ- 252 62 Prague-west, Czech Republic. Author Trýzna, Miloš 0000-0002-0426-3348 Mendel University in Brno, Faculty of Forestry and Wood Technology, Department of Forest Ecology, Zemědělská 3, CZ- 613 00 Brno, Czech Republic. & Municipal Museum of Ústí nad Labem, Natural History Department, Masarykova 1000 / 3, CZ- 400 01 Ústí nad Labem, Czech Republic. Corresponding author. anthribidae @ gmail. com; https: // orcid. org / 0000 - 0002 - 0426 - 3348 anthribidae@gmail.com text Zootaxa 2022 2022-10-11 5195 2 163 170 journal article 162547 10.11646/zootaxa.5195.2.5 f8e73dbb-c7f6-447c-8774-9639b148be89 1175-5326 7184735 0BD79350-61EE-42D7-BD70-0F67FF643C5F Genus Trogoderma Dejean, 1821 Type species: Anthrenus elongatulus Fabricius, 1801 . Diagnosis of the genus Trogoderma . Body subparallel to narrowly ovate in dorsal view, moderately to strongly convex in lateral view, with recumbent to erect setation on both pronotum and elytra. Head with a conspicuous median ocellus. Antennal club consisting of 3–9 antennomeres; club indistinct, antennomeres gradually lengthened towards apex. Antennal cavity closed. Prosternum forming a collar under which external mouthparts fit when head is retracted. Protibiae without spines on dorsal (= outer) face.