“…The exceptional and unique biodiversity of the ancient Eastern Arc Mountains of Tanzania and Kenya (Burgess et al ., 2007) was suggested to be driven by long‐term persistence of montane forests together with recurrent connections and disconnections between montane isolates since the Oligocene–Miocene (Lovett, 1993; Lovett et al ., 2005; Fjeldså & Bowie, 2008; Voelker et al ., 2010; Loader et al ., 2014). This mechanism was inferred for several clades such as songbirds (Passeriformes) (Bowie et al ., 2004; Fjeldså & Bowie, 2008; Voelker et al ., 2010; Fjeldså, Bowie, & Rahbek, 2012), rodents (Mizerovská et al ., 2019; Nicolas et al ., 2020), forest‐restricted chameleons (Tolley et al ., 2011; Ceccarelli et al ., 2014), brevicipitid frogs (Loader et al ., 2014), various insect groups such as Orthoptera (Voje et al ., 2009; Hemp et al ., 2010) and weevils (Grebennikov, 2017), and plants (Dimitrov et al ., 2012). Evidence suggests that most montane sister species in the Eastern Arc Mountains are allopatric but located on different montane areas, refuting in situ speciation (Hemp et al ., 2010; Voelker et al ., 2010; Missoup et al ., 2012; Ceccarelli et al ., 2014; Taylor et al ., 2014).…”