Figure 21 in Etudes on iurids, II. Revision of genus Calchas Birula, 1899, with the description of two new species (Scorpiones: Iuridae)

Figure 21: Close-up of the telson of Calchas showing two different placements of the subaculear setal pair (SSP) with respect to the vesicle/aculeus juncture. Top. Calchas birulai, sp. nov., female, Nemrut Dağı, Turkey, SSP placed on aculeus base, distal of the juncture. Bottom. C. gruberi, sp. nov., female, Anamur, Turkey, SSP placed at juncture. Ves/Acu = vesicle/aculeus juncture, VDSP = ventral distal setal pair, DDSP = dorsal distal setal pair.