FIGURES 18–21 in The six-eyed sand spiders of the genus Sicarius (Araneae: Haplogynae: Sicariidae) from the Brazilian Caatinga

FIGURES 18–21. Scanning electron microscopy images of Sicarius cariri n. sp. (female from Alvorada do Gurguéia, Piauí: 18, 19, 21; IBSP 162705, 162706) and S. ornatus n. sp. (male from Milagres, Bahia: 20; IBSP 161100). 18. Second right femur, prolateral view. Arrows indicate groups of black setae. 19. Same, dorsolateral view. Arrows indicate groups of black setae (top) and anterodorsal line of exposed cuticle (bottom). 20. Second right femur, group of black setae, prolateral view. Arrow indicates a chemosensory seta. 21- Second right tarsus, trichobotrial base, anterolateral view. Scale bars: 1000μm (18), 500μm (19), 100μm (20), 10μm (21).