“…Arachnids evolved diverse, and often unique, sensory structures on varying body parts to explore their surroundings regarding chemo-and mechanosensory information and to establish adequate response profiles. Examples for such sensory organs are the antenniform legs of Thelyphonida (e.g., Haupt, 1996;Moro & Geethabali, 1985;Sinakevitch et al, 2021) and Amblypygi (e.g., Foelix & Hebets, 2001;Santer & Hebets, 2011;Segovia et al, 2020), the leglike pedipalps of Solifugae (e.g., Cushing & Casto, 2012;Cushing et al, 2014), the pedipalps of Aranea (e.g., Barth, 2002b;Foelix, 1996;Ganske & Uhl, 2018), or the sensory legs I and II in Opiliones (e.g., Bishop, 1949;Elpino-Campos et al, 2001;Hillyard & Sankey, 1989;Hoenen & Gnaspini, 1999;Willemart & Chelini, 2007;Willemart et al, 2009).…”