New or rare Madagascar tiger beetles- 25. Pogonostoma (Microstenocera) borisbubeniki sp. nov., compared to P. (M.) andreevae Moravec, 2007 and a revised key to the species-group (Coleoptera: Cicindelidae) Author Moravec, Jiří 0000-0001-5294-6410 Mendel University in Brno, Faculty of Forestry and Wood Technology, Department of Forest Ecology, Zemědělská 3, CZ- 613 00 Brno, Czech Republic. & jirmor @ quick. cz; https: // orcid. org / 0000 - 0001 - 5294 - 6410 jirmor@quick.cz 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. anthribidae @ gmail. com; https: // orcid. org / 0000 - 0002 - 0426 - 3348 anthribidae@gmail.com text Zootaxa 2022 2022-06-21 5155 2 245 260 journal article 78125 10.11646/zootaxa.5155.2.4 5a7ff1be-c397-4df9-ad93-41f6f1ab9512 1175-5326 6673454 98389C49-8D21-415D-96BA-4D40F9BBDE49 Pogonostoma subgenus Microstenocera Jeannel, 1946 Type species . Psilocera pusilla Laporte de Castelnau & Gory, 1835 (by original designation). Pogonostoma ( Microstenocera ) Jeannel, 1946: 109 , 112 (partim). Pogonostoma ( Microstenocera ) : Rivalier 1970: 318 (partim). Pogonostoma ( Microstenocera ) : Moravec 2007: 316 . Differential diagnosis. A large subgenus comprising species characterized by small to extremely small body and elytra with irregular setal vesture (throughout or at least on elytral disc) of ornamental setae arising from setigerous tubercles, or microtubercles, or micropits irregularly distributed on intervals between punctures; elytral surface shiny or matt; labrum consistently 4-setose bearing two anterior and two lateral setae; legs and buccal appendages variously coloured. Note . The subgenus, originally established by Jeannel (1946) and further modified by Rivalier (1970) , was recently considerably reassessed in the monograph of the genus ( Moravec 2007 ). It comprises presently 40 species (including the new species described here).