Our “Index descriptus” represents a list of newly described organisms, most often new species, whose descriptions appear for the first time on the pages of Historia naturalis bulgarica. Currently contains 53 taxa. Geographically, these are from all over the world: Albania, Antarctica, Bulgaria, China, Cuba, France, Greece, Iceland, Mexico, Nepal, Nigeria, North Korea, Papua New Guinea, Tunisia, Turkey.
Apostolov, 2020 — Review of the genus Maraenobiotus Mrázek, 1893 (Copepoda: Harpacticoida: Canthocamptidae) in Bulgaria with description of two new species