21. Dermacentor marginatus (Sulzer, 1776). Palearctic: 1) Afghanistan, 2) Albania, 3) Algeria, 4) Armenia, 5) Austria, 6) Azerbaijan, 7) Belarus, 8) Bosnia and Herzegovina, 9) Bulgaria, 10) China (north), 11) Croatia, 12) Czechia, 13) France, 14) Georgia, 15) Germany, 16) Greece, 17) Hungary, 18) Iran, 19) Italy, 20) Kazakhstan, 21) Kosovo, 22) Kyrgyzstan, 23) Lebanon, 24) Moldova, 25) Mongolia, 26) Montenegro, 27) Morocco, 28) North Macedonia, 29) Portugal, 30) Romania, 31) Russia, 32) Serbia, 33) Slovakia, 34) Slovenia, 35) Spain, 36) Switzerland, 37) Syria, 38) Tajikistan, 39) Tunisia, 40) Turkey, 41) Ukraine, 42) Uzbekistan (Feider 1965, Hoogstraal 1979, BaillyChoumara et al. 1980, Voltzit & L’vov 1986, Papadopoulos et al. 1996, Filippova 1997, Morel 2003, Cringoli et al. 2005, Kolonin 2009, Chen et al. 2010, Akimov & Nebogatkin 2011 a, Omeragic 2011, Santos-Silva et al. 2011, Bursali et al. 2012, Krčmar 2012, Petney et al. 2012, Gheorghitsa et al. 2013, Sherifi et al. 2014, Hovhannisyan & Dilbaryan 2016, Rubel et al. 2016, 2021, Dabaja et al. 2017, Estrada-Peña et al. 2017, Fedorova 2017, Sherifi et al. 2017, Kadriaj et al. 2018, Nader et al. 2018, Černý, J. et al. 2019, Hosseini-Chegeni et al. 2019, Hornok et al. 2020 a, Pavlović et al. 2020, Perfilyeva et al. 2020, Tsapko 2020, Zhao et al. 2021, Rubel & Brugger 2022). The Dermacentor marginatus species complex includes Dermacentor marginatus, Dermacentor niveus, Dermacentor nuttalli, Dermacentor silvarum and Dermacentor ushakovae. Filippova & Plaksina (2005) discussed the difficulties involved in morphologically separating the species in this complex, and Guglielmone et al. (2020) asserted that as yet undetermined species may be conspecific with Dermacentor marginatus, but the lack of type material for this tick conspires against resolving this problem. Morel (2003) presented an extensive list of records of Dermacentor marginatus, but many of these are thought to be the result of confusion with related species. As a consequence, the geographic limits of the distribution of Dermacentor marginatus are sometimes uncertain, especially in Palearctic Asia. Estrada-Peña et al. (2017) did not include northern Africa in their text description of the range of Dermacentor marginatus (page 281), but this tick’s presence there is shown in an accompanying figure. Jaenson et al. (1994) listed Lithuania within the range of Dermacentor marginatus, but no evidence of a permanent population of this tick was found during this analysis. Additionally, Nowak-Chmura & Siuda (2012) stated that Dermacentor marginatus is not established in Poland. We have therefore excluded both Lithuania and Poland from this species’ range. Records of Dermacentor marginatus from the Oriental Zoogeographic Region have been reported for Thailand by Temmamm et al. (2019) and for Pakistan by Ghosh et al. (2007) and Ramzan et al. (2020a, b), but these require confirmation, and both countries are excluded from the geographic distribution of this tick.

Published as part of Guglielmone, Alberto A., Nava, Santiago & Robbins, Richard G., 2023, Geographic distribution of the hard ticks (Acari: Ixodida: Ixodidae) of the world by countries and territories, pp. 1-274 in Zootaxa 5251 (1) on page 72, DOI: 10.11646/zootaxa.5251.1.1, http://zenodo.org/record/7704190