Geographic distribution of the hard ticks (Acari: Ixodida: Ixodidae) of the world by countries and territories Author Guglielmone, Alberto A. 0000-0001-5430-2889 guglielmone.alberto@inta.gob.ar Author Nava, Santiago 0000-0001-7791-4239 nava.santiago@inta.gob.ar Author Robbins, Richard G. 0000-0003-2443-5271 robbinsrg@si.edu text Zootaxa 2023 2023-03-07 5251 1 1 274 http://dx.doi.org/10.11646/zootaxa.5251.1.1 journal article 235222 10.11646/zootaxa.5251.1.1 43227427-a867-4744-9e4c-2b2302524890 1175-5326 7704190 3326BF76-A2FB-4244-BA4C-D0AF81F55637 78. Rhipicephalus sulcatus Neumann, 1908b . Afrotropical: 1) Angola , 2) Benin , 3) Botswana , 4) Burkina Faso , 5) Burundi , 6) Cameroon , 7) Central African Republic , 8) Chad (south), 9) Congo , 10) Democratic Republic of the Congo , 11) Eritrea , 12) Ethiopia , 13) Gabon , 14) Ghana , 15) Guinea , 16) Ivory Coast , 17) Kenya , 18) Malawi , 19) Mali (south), 20) Mozambique , 21) Namibia , 22) Nigeria , 23) Rwanda , 24) Senegal , 25) South Africa , 26) South Sudan , 27) Sudan , 28) Tanzania , 29) Togo , 30) Uganda , 31) Zambia , 32) Zimbabwe ( Morel & Vassiliades 1963 , Pegram et al. 1987 b , Walker et al. 2000, Terenius et al. 2000 , Morel 2003 , Ntiamoa-Baidu et al. 2004 , Horak et al. 2018 , Sylla et al. 2021 ). Guglielmone et al. (2020) regard as provisional the redescriptions of the male and female of Rhipicephalus sulcatus , as well as the descriptions of the larva and nymph in Theiler & Robinson (1953) and subsequently published redescriptions of the immature stages. Additionally, Guglielmone et al. (2020) believe that further studies, including those involving molecular methods, are needed to resolve the taxonomic problems associated with Rhipicephalus sulcatus and related ticks. Morphological separation of Rhipicephalus sulcatus from Rhipicephalus sanguineus sensu lato , Rhipicephalus afranicus , named as Rhipicephalus turanicus by Morel & Vassiliades (1963) , Pegram et al. (1987b) , Walker et al. (2000) , Morel (2003) and Horak et al. (2018) , and other species in the Rhipicephalus sanguineus group is difficult, and it is sometimes impossible to reach a specific diagnosis. Under these conditions, information concerning the geographic distribution of Rhipicephalus sulcatus should be treated as provisional, and our list of countries where alleged Rhipicephalus sulcatus has been found is chiefly drawn from Morel & Vassiliades (1963) , Pegram et al. (1987b) , Walker et al. (2000) , Morel (2003) and Horak et al. (2018) .