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 31. Rhipicephalus gertrudae Feldman-Muhsam, 1960b . Afrotropical: 1) Namibia , 2) South Africa ( Walker et al. 2000 , Horak et al. 2018 ). Walker et al. (2000) discussed the difficulties involved in morphologically separating the adults of Rhipicephalus gertrudae , Rhipicephalus capensis and Rhipicephalus follis , while Horak et al. (2018) stated that it is difficult to differentiate larvae and nymphs of Rhipicephalus gertrudae from those of such species as Rhipicephalus follis , Rhipicephalus simus and Rhipicephalus tricuspis . Keirans (1985b , page 694) listed a male of Rhipicephalus gertrudae from Malawi . Walker et al. (2000) did not discuss this record, and Horak et al. (2018) treated this tick as restricted to Namibia and South Africa . We do not include Malawi within the geographic distribution of Rhipicephalus gertrudae .