Figures 2-4 from: (2010) Further observations on scorpion genera Hadrurus and Hoffmannihadrurus (Scorpiones, Caraboctonidae). ZooKeys 59: 1-13. https://doi.org/10.3897/zookeys.59.546

Figures 2-4 - Hadrurus pinteri, chelal neobothriotaxy showing examples of patterns with the largest number of accessory trichobothria (closed circles). 2 External view of left chela (reversed), juvenile male, Punta Trinidad, Baja California Sur, Mexico, showing five external accessory (Ea) trichobothria, including the diagnostic Ea on the base of the fixed finger (db, dst, and dt are not shown) 3 Internal view of left chela (reversed), adult female, Loreto, Baja California Sur, Mexico, showing nine internal trichobothria, including ib–it and seven accessory trichobothria (ia). Note that the accessory trichobothria reduce in size somewhat as they occur basally 4 Ventral view of right chela, adult female, Bahia Concepción, Baja California Sur, Mexico, showing 32 ventral trichobothria, including V1–V4, and Et1 (note that V1–V4 are not distinguished from accessory trichobothria)