Figures 150–164 in Reanalysis of Teruelius and Grosphus (Scorpiones Buthidae with descriptions of two new species

Figures 150–164. Granulation of ventrosubmedian carinae of metasomal segment I. Figures 150–157. Optical image analysis of carinal granulation in Grosphus hirtus, ♂ (150–153) and Teruelius mahafaliensis, ♂ (154–157). Granule patterns (white on black) resolved by binary thresholding of image gray level with maximum entropy algorithm (150, 154), carinae traced as piecewise linear paths following granules or ridges (151, 155, red lines, UV fluorescence), fluctuations in gray levels (8-bit) along traced carinae associated with granulation, normalized to total carinal length (152, 156), and power spectra of fluctuations after subtraction of mean gray level and linear trends (153, 157). Images resampled to 340 pixel width (bilinear down-sample, or cubic up-sample) and smoothed by Gaussian filter, radius 2 pixels (thresholding) or 1 pixel (spectral analysis). Scale bars: 400 μm (151, 155). Figure 158. Bivariate logarithmic scatter plot of integrated power of gray level fluctuations (spatial frequency range 10–26 granules/ carina) vs. mean length of granules along carinal axis resolved by binary thresholding for Grosphus (cyan symbols, n = 30, 8 spp.) and Teruelius (yellow, orange, magenta and red symbols, n = 44, 18 spp.). T. feti represented by juvenile holotype male. 'Granule' length = 1 if thresholded regions merge into single carina. Figures 159–164. Ventral views of metasomal segment I showing different carinal granulation in Grosphus vs. Teruelius. G. madagascariensis, ♂ (159), G. angulatus sp. n., ♀ (160), T. flavopiceus, ♀ (161), T. ankarana, ♀ (162), T. grandidieri, ♂ (163), and T. limbatus, ♀ (164). Reflected white light images. Scale bars: 2 mm.