Naumova M. — Descriptions of Two New Spider Species, with New Data on the Albanian Arachnofauna (Arachnida: Araneae, Opiliones, Pseudoscorpiones and Scorpiones) — 3-12. PDF
Veličković T. Z., Simić V. M., Šanda R., Radenković M. D., Milošković A. M., Radojković N. M. &
Marić S. P. — New Record of a Population of Telestes souffia (Risso, 1827) (Actinopterygii: Cyprinidae) in Serbia — 13-20. PDF
Kokavec I. & Šporka F. — Occurrence and Habitat Preferences of the Euryhaline Oligochaete Paranais litoralis (Muller, 1784) (Clitellata: Naididae) in a Tributary of the Danube River Middle Stretch — 21-25. PDF
Teofilova T.M., & Naumova M. — First Record of Lilioceris faldermanni (Guerin-Meneville, 1829) (Coleoptera: Chrysomelidae: Criocerinae) in Bulgaria, Including a Record of a New Host Plant — 27-30. PDF
Urbšys A., Pileckas V., Nainienė R. & Šiukščius A. — Testicular Biometry and Morphological Characteristics of Wild Boar Spermatozoa in Relation to Age during the Anoestrus Period — 31-36. PDF
Ettiss K., Chammem M. & Khorchani T. — Food Preferences of the Crested Porcupine Hystrix cristata L., 1758 (Rodentia: Hystricidae) in South-Eastern Tunisia — 37-42. PDF
Altuntaş H. & Duman E. — Lethal and Sublethal Effects of Juglone on the Life-History Traits of Galleria mellonella L. (Lepidoptera: Pyralidae) — 43-48. PDF
Rimcheska B. & Vidinova Y. — Ecological Status Assessment of Mountain and Semi-mountain Streams in the Aegean Watershed: Applicability of Biotic Indices BMWP and ASPT Based on Macroinvertebrates — 49-60. PDF
Bobori D. C.,Moutopoulos D. K. & Chalkia V. — Body-size Relations and Mouth Dimensions of Fresh and Preserved Freshwater Fish — 61-66. PDF
Türkmen G. & Kazancı N. — Community Structure of Mayflies (Insecta: Ephemeroptera) in a Biodiversity Hotspot as Revealed by Multivariate Analyses — 67-81. PDF
Naumov B. Y., Popgeorgiev G. S., Kornilev Y. V., Plachiyski D., Stojanov A. J. & Tzankov N. D. — Distribution and Ecology of the Alpine Newt Ichthyosaura alpestris (Laurenti, 1768) (Amphibia: Salamandridae) in Bulgaria — 83-102. PDF
Uzunova E., Ignatov K., Dashinov D., Tasheva-Terzieva E. & Trichkova T. — The Alien Peipsi Whitefish Coregonus maraenoides Polyakov, 1874 (Actinopterygii: Salmoniformes) in Iskar Reservoir, Danube River basin, Bulgaria — 103-112. PDF
Todorov M., Trichkova T., Hubenov Z. & Jurajda P. — Faxonius limosus (Rafinesque, 1817) (Decapoda: Cambaridae), a New Invasive Alien Species of European Union Concern in Bulgaria — 113-121. PDF
Okkay S. & Özer A. — New Locality and Host Record of Some Myxozoan Parasite Species (Cnidaria) off Turkish Coast of the Black Sea — 123-130. PDF
Bolat Y. & Uçgun E. — Effects of Hexagonal- and Diamond-shaped Mesh Traps on Size Selectivity of Freshwater Crayfish Astacus leptodactylus Eschscholtz, 1823 (Decapoda: Astacidae) in the E?irdir Lake, Turkey — 131-136. PDF
Karan S. & Turan C. — Evaluation of Molecular and Phenotypic Markers for Phylogeographic Analysis of the Black-Sea Turbot Scophthalmus maeoticus (Pallas, 1814) (Actinopterygii: Scophthalmidae) — 137-147. PDF
Heral O. & Bayhan B. — Age and Growth of Morocco Dentex Dentex maroccanus Valenciennes, 1830 (Actinopterygii: Sparidae) in Izmir Bay, Central Aegean Sea, Turkey — 149-154. PDF
Özsandikçi U. & Gönener S. — Effectiveness of Pingers on the Harbour Porpoise Phocoena phocoena relicta Abel, 1905 (Cetacea: Phocoenidae) in Turkey as Revealed by Shore-based Observations — 155-159. PDF
Hristov P.I. — Book Review – Ilyasov R. A. & Kwon H. W. (Eds.) 2019. PHYLOGENETICS OF BEES. Boca Raton, Florida: CRC Press. 283 p. ISBN 9781138504233 — 161-162. PDF
Golemansky V. — In memoriam – Venelin L. Beschovski (1933-2019) — 163-164. PDF
Naumov B., Lukanov S. & Vacheva E. — In memoriam – Vladimir Beshkov (1935-2019) — 165-166. PDF
Editorial Board — Editorial Acknowledgements to Reviewers, 2019 — 167. PDF