“…In general, many hematophagous species (such as mosquitoes and Culicoides) prefer a specific host on which they will feed (Kettle, 1962;Bartsch et al, 2009;Votypka et al, 2009;Lassen et al, 2012;Viennet et al, 2013), although some species are known to be generalists (Blackwell et al, 1994). Some Culicoides species, however, exhibit opportunistic feeding behaviour with respect to host distribution and density (Kettle, 1977;Garros et al, 2011;Lassen et al, 2011Lassen et al, , 2012Calvo et al, 2012). Visual stimuli and body odour are the two main elements involved in attraction to hosts (Bishop et al, 2008).…”