Figures 13-18 in The systematic position of the scorpion genera Heteroscorpion Birula, 1903 and Urodacus Peters, 1861 (Scorpiones: Scorpionoidea)

Figures 13-18: Diagrammatic trichobothrial pattern of external surface of chela for genus Urodacus showing external accessory trichobothria. 13. Urodacus manicatus. 14. U. novaehollandiae. 15. U. armatus. 16. U. elongatus. 17. U. hoplurus. 18. U. yaschenkoi. Open circles depict orthobothriotaxy, closed circles depict hypothesized external accessory trichobothria. Note, ventral accessory trichobothria located on the extreme basal aspect of the palm are not shown.