Fig. 2From: Onchocerciasis transmission in Ghana: the human blood index of sibling species of the Simulium damnosum complexMethods used to obtain host-independent (a, b) and host-dependent (c, d) adult female blackfly samples. a Bellec (sticky) trap situated above rapids. b Monks Wood (light) trap placed near presumed breeding sites. c Human-baited tent. d Cow-baited tent. a and b illustrate traps to collect ovipositing flies; c and d depict methods to obtain host-seeking fliesBack to article page