Figures 45–52. Tibial spurs and tarsal setation. Figures 45–46. Tibial and tarsal segments of leg III (45) and leg IV (46) of Grosphus madagascariensis in retrolateral view. Figures 47–48. Tibial and tarsal segments of leg III (47) and leg IV (48) of Teruelius limbatus in retrolateral view. Abbreviations: Tb, tibia; Bt, basitarsus (tarsomere I); Tt, telotarsus (tarsomere II); ts, tibial spur; vs, ventral setae of telotarsus. Figures 49–50. Horizontal bar plots of the mean ratio of tibial spur L/ tibia distal D for leg III (49) and leg IV (50) (characters 10 and 11, respectively) of Grosphus (n = 34, 9 spp.), Teruelius (n = 66, 21 spp.), Pseudolychas (n = 2, 2 spp.) and other outgroup taxa (n = 15, 8 spp.). Data from both sexes pooled. Error bars are standard errors. Discretization thresholds shown at step changes in ranked length. Color codes of bars as indicated in Fig. 16 legend. Figures 51–52. Ventral telotarsal setation. Figure 51. Logarithmic distribution of number of macrosetae on ventral telotarsus III (character 12) in Grosphus (cyan bars and symbols, n = 36, 8 spp.) and Teruelius (yellow bars and symbols, n = 12, 10 spp.). Macrosetal counts on abscissa plotted on logarithmic scale. Insets: UV fluorescence photomicrographs and maps of macroseta sockets (red dots) of ventral telotarsus III in Grosphus simoni (left) and Teruelius flavopiceus (right). Figure 52. Horizontal bar plot of ratios of mean blue channel intensities of dorsal vs. ventral regions-of-interest (ROI) (white boxes) in telotarsal images of Grosphus (cyan bars) and Teruelius (yellow bars). Insets: control images (*) of T. haeckeli sp. n. (a, leg III) and G. madagascariensis (c, leg III), original (upper) and resampled (lower); test images of T. sabineae (b, leg IV) and G. ambre (d, leg IV) (resampled from: Lourenço & Wilmé, 2016; Lourenço et al., 2018). Error bars: standard deviations of ROI pixels.