Kostova, R., Borissov, S., Bobeva A., Bekchiev, R., 2024. At a crossroads: Genetic lineages and dispersal routes of Morimus asper (Sulzer, 1776) s.l. (Coleoptera, Cerambycidae) in Bulgaria. — Biodiversity Data Journal, 12: e116619. doi:10.3897/BDJ.12.e116619
Kostova, R., Bekchiev, R., Popgeorgiev, G., Kornilev, Y. V., 2023. First exhaustive distribution and habitat modelling of Morimus asper (Sulzer, 1776) sensu lato (Coleoptera, Cerambycidae) in Bulgaria. — Nature Conservation, 53: 39—59. doi:10.3897/natureconservation.53.104243
Kostova, R., Bekchiev, R., 2023. Ground beetle (Coleoptera: Carabidae) taxocoenoses from high altitude Pinus peuce and Pinus heldreichii forests in Bulgaria. — Historia naturalis bulgarica, 45 (7): 187—196. [PDF] doi:10.48027/hnb.45.073
Kostova, R., Bekchiev, R., 2023. Data on the distribution of Osmoderma barnabita Motschulsky, 1845 (Coleoptera: Cetoniidae) in Bulgaria from 1904 to 2022. — Historia naturalis bulgarica, 45 (6): 155—161. [PDF] doi:10.48027/hnb.45.061
Kostova, R., Bekchiev, R., 2023. Trechus (s. str.) “subnotatus” species group (Coleoptera: Carabidae) in Bulgaria. — Zootaxa, 5264 (4): 505—525. doi:10.11646/zootaxa.5264.4.3
Bekchiev, R., Kostova, R., 2023. New data about the distribution of Plectophloeus fischeri (Aubé, 1833) and Dicentrius biroi Besuchet, 1999 (Coleoptera: Staphylinidae: Pselaphinae) in Bulgaria. — Historia naturalis bulgarica, 45 (2): 39—42. [PDF] doi:10.48027/hnb.45.024
Bekchiev, R., Kostova, R., 2022. The Subfamily Pselaphinae (Coleoptera: Staphylinidae) of South-western Bulgaria: Rila and Pirin Mountains. — Acta zoologica bulgarica, 74 (2): 169—174.
Bekchiev, R., Antov, M., Boyadzhiev, P., Zaemdzhikova, G., Kostova, R., Guéorguiev, B., 2022. Carabus variolosus (Fabricius, 1787) (Coleoptera: Carabidae) in Bulgaria: rediscovered after 111 years. — Historia naturalis bulgarica, 44 (10): 119—123. [PDF] doi:10.48027/hnb.44.103
Bekchiev, R., Crevecoeur, L., Gielen, K., Bosmans, B., Smets, K., Kostova, R., 2020. One Hundred Years of Solitude: Rediscovery of the Rare and Protected Beetle Rhysodes sulcatus (Fabricius, 1787) (Coleoptera: Rhysodidae) in Bulgaria. — Acta zoologica bulgarica, (in print) published online at http://www.acta-zoologica-bulgarica.eu/002372.
Асенова, А., Лангуров, М., Симов, Н., Бекчиев, Р., 2020. Бъдете равни с природата. Учебно помагало за деца от предучилищна възраст. — Община Кюстендил, Национален природонаучен музей—БАН, София, 56 с. [PDF]
Асенова, А., Лангуров, М., Симов, Н., Бекчиев, Р., 2020. Будите једнаки са природом. Кратка образовна књижица за децу предшколског узраста. — Општина Ћустендил, Национални природњачки музеј—БАН, Софија, 55 с. [PDF]
Ćurčić, S., Pavićević, D., Radović, D., Vesović, N., Bekchiev, R., Ćurčić, N., Guéorguiev, B., 2019. Current and predicted distribution of the rare and threatened beetle Bolbelasmus (Bolbelasmus) unicornis (Coleoptera: Geotrupidae) in Serbia. — European Journal of Entomology, 116: 413—424. doi:10.14411/eje.2019.042
Kostova, R., Bekchiev, R., Beshkov, S., 2019. Coleoptera and Lepidoptera (Insecta) diversity in the central part of Sredna Gora Mountains (Bulgaria). — Bulletin of the Entomological Society of Malta, 10: 75—95. [PDF]
Langourov, M., Simov, N., Bekchiev, R., Chobanov, D., Antonova, V., Dedov, I., 2018. Inventory of Selected Groups of Invertebrates in Sedge and Reedbeds not Associated with Open Waters in Bulgaria. — Acta zoologica bulgarica, 70 (4): 487—500. [PDF]
Bekchiev, R., Guéorguiev, B., Kostova, R., Chehlarov, E., Sivilov, O., 2018. New Records of Rare and Threatened Beetles (Insecta: Coleoptera) in Bulgaria. — Acta zoologica bulgarica, 70 (4): 501—506.
Sabella, G., Bekchiev, R., Kostova, R., 2017. Pselaphinae (Coleoptera Staphylinidae) from Sicily and Calabria (Italy). Results from a short entomological expedition in April, 2015. — 3rd International Congress 'Biodiversity, Mediterranean, Society', September 4th—6th 2015, Volume 8. Biodiversity Journal, Noto-Vendicari (Italy). 185—192 pp. [PDF]
Bekchiev, R., Sivilov, O., Kostova, R., Lapeva-Gjonova, A., 2017. Distribution of Amorphocephala coronata (Germar, 1817) (Coleoptera: Brentidae) in Bulgaria. — ZooNotes, 104: 1—3. [PDF]
Bekchiev, R., 2017. Terestrial invertebrates — Coleoptera. — pp. 101—103. Ivanova, V. (ed.) Mapping and Assessment of Ecosystem Services of Wetlands in Bulgaria , IBER-BAS, Sofia. 185 pp.
Бекчиев, Р., Бешков, С., Арангелов, С., Киров, Д., 2017. Определител на животинските видове за оценка на гори с висока консервационна стойност. — WWF, София, 191 с. [PDF]
Костова Р., Лазаров, С., Бекчиев, Р., Горанов, С., Симов, Н., Бешков, С., 2016. Почвени и пещерни безгръбначни животни. — В: Спелеоложки проучвания на пещерите в община Годеч (част 1), Асоциация на спелеоклубове в София, 39—50. [PDF]
Bekchiev, R., Hlaváč, P., 2016. New and interesting species of the genus Bryaxis Kugelann, 1794 (Coleoptera, Staphylinidae, Pselaphinae) from Croatia. — Zootaxa, 4144 (1): 109—116.
Yin, Z.-W., Coulon, G., Bekchiev, R., 2015. A new species of Pseudophanias Raffray from a cave in central Nepal (Coleoptera: Staphylinidae: Pselaphinae). — Zootaxa, 4048 (3): 446—450.
Savev, S., Borisov, M., Bekchiev, R., Kostova, R., Tsankov, N., Shurulinkov, P., Petrov, B., 2015. Old forests in Strandja Nature Park — conservation and sustainable management. — Directorate of Strandja Nature Park, Malko Tarnovo, 200 pp. (In Bulgarian).
Hristovski, S., Slavevska-Stamenković, V., Hristovski, N., Bekchiev, R., Chobanov, D., Dedov, I., Devetak, D., Karaman, I., Kitanova, D., Komnenov, M., Ljbomirov, T., Melovski, D., Pešić, V., Simov, N., 2015. Diversity of invertebrates in the Republic of Macedonia. — Macedonian Journal of Ecology and Environment, 17 (1): 5—44. [PDF]
Bekchiev, R., Guéorguiev, B., 2015. First purposive study of beetles (Coleoptera) from endogean environments in Bulgaria: collection sites and preliminary results. — Biodiversity Journal, 6 (1): 327—340. [PDF]
Bekchiev, R., Brachat, V., Anlas, S., Özgen, I., Yağmur, E. A., Örgel, S., Gjonov, I., Kostova, R., 2015. Contribution to the Pselaphinae (Coleoptera: Staphylinidae) of Anatolia, Turkey. — Acta zoologica bulgarica, 67 (3): 319—324. [PDF]
Yin, Z.-W., Bekchiev, R., Li, L.-Z., 2014. A new species of Lasinus Sharp (Coleoptera: Staphylinidae: Pselaphinae) from East China. — Zootaxa, 3764 (5): 597—600.
Sabella, G., Bekchiev, R., 2014. A New Species of Tychus Leach, 1817 of the Armeniacus species Group (Coleoptera, Staphylinidae, Pselaphinae)from Greece. — Acta zoologica bulgarica, 66 (3): 313—315. [PDF]
Langourov, M., Lazarov, S., Stoev, P., Guéorguiev, B., Deltshev, C., Petrov, B., Andreev, S., Simov, N., Bekchiev, R., Antonova, V., Ljubomirov, T., Dedov, I., Georgiev, D., 2014. New and interesting records of the MSS and cave fauna of Vitosha Mt., Bulgaria. — Proceedings of Balkan Speleological Conference 'Sofia’2014', Sofia, Bulgaria, 28—30 March 2014. Caving Club 'Helictite' — Sofia, pp. 66—76. [PDF]
Bekchiev, R., Brachat, V., 2014. Revision of the genus Delenda Croissandeau, 1891 (Coleoptera: Staphylinidae: Pselaphinae). — Zootaxa, 3765 (6): 583—592.
Georgiev, G., Doychev, D., Simov, N., Guéorguiev, B., Bekchiev, R., 2013. Contribution to the knowledge to the of Cerambycid fauna (Coleoptera: Cerambycidae) of Belasitsa Mountain in Bulgaria. — Silva Balcanica, 14 (1): 109—116. [PDF]
Bekchiev, R., Hlaváč, P., Nomura, S., 2013. A Taxonomic Revision of Tyrini of the Oriental Region. Part V. Revision of the genus Lasinus Sharp, 1874 (Coleoptera: Staphylinidae: Pselaphinae). — ZooKeys, 340: 21—42. doi:10.3897/zookeys.340.5980 [PDF]
Bekchiev, R., Hlaváč, P., 2013. Description of a new unusual Pselaphodes Westwood, 1870 (Coleoptera: Staphylinidae: Pselaphinae) from Nepal. — Zootaxa, 3700 (3): 495—498.
Bekchiev, R., 2013. Faunistic review and description of a new species of Pselaphinae (Coleoptera: Staphylinidae) from the Strandzha Mountains (Bulgaria and Turkey). — Turkish Journal of Zoology, 37: 431—440. [PDF]
Bekchiev, R., 2013. Description of a new species of Trimium Aubé, 1833 (Staphylinidae: Pselaphinae) from Bulgaria and Greece. — Acta zoologica bulgarica, 65 (3): 289—291. [PDF]
Bekchiev, R., 2013. A study of the Pselaphinae (Coleoptera, Staphylinidae) in the Rhodopes Mountain (Bulgaria). — In: Biodiversity of Western Rhodopes (Bulgaria and Greece) II. — Pensoft & Nat. Mus. Natur. Hist., Sofia: 267—278. [PDF]
Bekchiev, R., 2013. A new species of Tychobythinus Ganglbauer, 1896 (Coleoptera: Staphylinidae: Pselaphinae) from Turkey. — Biodiversity Data Journal, 1: e963. doi:10.3897/BDJ.1.e963 [PDF]
Bekchiev, R., 2011. The subfamily Pselaphinae (Coleoptera: Staphylinidae) of Southwestern Bulgaria II — Belasitsa Mts. — Biologia, 66/3: 506—508.
Bekchiev, R., 2011. Description of the second species of the genus Taiwanophodes Hlavác, 2002 (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam. — Russian Entomol. J., 19 (3): 183—185.
Guéorguiev, B., Bekchiev, R., Chehlarov, E., Hristovski, S., Prelik, D., Cvetkovska-Gorgievska, A., 2010. New Coleoptera (Insecta) Species from Republic of Macedonia. — Acta zoologica bulgarica, 62 (3): 363—365. [PDF]
Bekchiev, R., Zlatkov, B., 2010. On the distribution of Propomacrus bimucronatus (Pallas, 1781) (Col.: Euchiridae) in Bulgaria. — The Entomologist’s Record and Journal of Variation, 122 (6): 274—276. [PDF]
Bekchiev, R., 2010. Note on Pselaphinae (Coleoptera: Staphylinidae) Fauna of Turkey (European part). — Acta entomologica slovenica, 18 (1): 47—52.
Bekchiev, R., 2010. New data for Omoglymmius germari (Ganglbauer, 1892) (Rhysodidae: Coleoptera) in Bulgaria. — ZooNotes, 11: 1—3. [PDF]
Bekchiev, R., 2010. Faunistical research on Pselaphinae fauna (Coleoptera: Staphylinidae) in several regions of South-West Bulgaria. — PhD thesis (in Bulgarian). [PDF]
Guéorguiev, B., Bekchiev, R., 2009. A contribution to the coleopteran fauna of Bulgaria (Insecta: Coleoptera). — Acta zoologica bulgarica, 61 (1): 39—44. [PDF]
Bekchiev, R., Hlavac, P., 2008. New species of the genus Dicentrius Reitter, 1882 (Coleoptera: Staphylinidae, Pselaphinae) from the western Serbia. Advances in the studies of the biodiversity of the Balkan Peninsula. — Papers dedicated to the memory of Guido Nonveiller, pp. 241—243. [PDF]
Bekchiev, R., 2008. Variability in the structure of the aedeagus of Dicentrius rousi Bes. 1999 (Coleoptera: Staphylinidae, Pselaphinae). — Acta zoologica bulgarica, Suppl. 2: 25—28. [PDF]
Hlavac, P., Bekchiev, R., Ruzicka, J., Lackner, T., 2007. Contribution to the knowledge of myrmecophilous beetles (Coleoptera) of Bulgaria. — Acta Soc. Zool. Bohem., 71: 131—136. [PDF]
Besuchet, C., Bekchiev, R., 2007. Description d’un nouveau Batrisodes de la Bulgarie (Coleoptera, Staphylinidae, Pselaphinae). — Historia naturalis bulgarica, 18: 75—80. [PDF] doi:10.5281/zenodo.4043594
Bekchiev, R., Shishiniova, M., 2007. A Contribution to the Pselaphinae Fauna (Coleoptera: Staphylinidae) of the Vitosha Mountain. — Acta zoologica bulgarica, 59 (1): 33—39. [PDF]