- Fungi - basidiomycetes, rust fungi, smut fungi, ascomycetes (incl. lichenized fungi), anamorphic fungi
- Microspora
- Mosses and vascular plants (mostly of the flora of Bulgaria and Balkan Peninsula)
- Vascular plant fossils
- Protozoa: Rhizopoda (testate amoebae), Coccidia, Haemosporidia
- Parasitic Platyhelminthes (Cestoda, Trematoda, Monogenea)
- Zooparasitic nematodes
- Plant-parasitic and soil nematodes
- Annelida: Branchiobdellida
- Gastropoda (terrestrial)
- Araneae
- Myriapoda: Julida
- Insecta: Coleoptera: Carabidae, Buprestidae; Hymenoptera: Ampulicidae, Chrysididae, Crabronidae, Mutillidae, Sphecidae, Pteromalidae, Formicidae; Diptera; Odonata; Heteroptera; Orthoptera; Blattodea
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