Tityus lourencoi C. L. Koch 1836

T. (Tityus) lourençoi (i) smaller overall size with the male holotype measuring 44.1 mm (66.4 mm in T. (Tityus) achilles) (ii) pronounced longitudinal keel on tergites (only slight in T. (Tityus) achilles) (iii) lower pectinal tooth count with 16– 15 in male holotype (16–18 in T. (Tityus) achilles) (iv) 17 oblique rows of denticles on movable chela finger (15 in T. (Tityus) achilles) (v) longer pedipalps in male (pedipalp length/total length ratio 0.56 in T. lourençoi male holotype, 0.48 in T. (Tityus) achilles) (vi) broader patella in males with length/width ratio 3.38 (3.83 in T. (Tityus) achilles male holotype) (vii) broader chela in males with length/width ratio 5.27 (6.39 in T. (Tityus) achilles male holotype) (viii) shorter metasoma in males with metasoma length/ total length ratio 0.57 (0.66 in T. (Tityus) achilles male holotype) (ix) spinoid posterior granules on segments I–IV (only on IV in T. (Tityus) achilles) (x) other morphometric values, see Table 2.