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 35. Rhipicephalus humeralis Tonelli Rondelli, 1926a . Afrotropical: 1) Kenya , 2) Somalia , 3) Tanzania ( Yeoman & Walker 1967 , Walker 1974 , Walker et al. 2000 , Kolonin 2009 , Olivieri et al. 2021 ). Walker et al. (2000) stated that it can be difficult to morphologically separate females of Rhipicephalus humeralis from those of Rhipicephalus pulchellus , while the differentiation of larvae and nymphs of these species is even more challenging. Allam et al. (2018) reported Rhipicephalus humeralis from Egypt , but its presence in that country requires confirmation.