“…The Opilioacarida and Holothyrida are scavengers of particulates or fluids (van der Hammen, 1989; Walter and Proctor, 1998). As such, the ancestral parasitiform lineage were most probably nonparasitic and non-predatory scavengers (Walter and Proctor, 1998), suggesting that blood-feeding evolved independently within the tick and Dermanyssina (including Parasitina) lineages (Bochkov et al 2008;Mans, 2011;Radovsky, 1969;Walter and Proctor, 1999). In this scenario, ticks would have adapted from an ancestor that may have scavenged from vertebrate wounds (Walter and Proctor, 1998), first as a lymph feeder and later as blood-feeder.…”