FIG. 5 in Cheliceral Morphology in Solifugae (Arachnida): Primary Homology, Terminology, and Character Survey

FIG. 5. Solifugae, chelicerae, retrolateral (A, B, D, G, I) and dorsal (C, E, F) views, and fixed finger, retrolateral view (H), measurements, ratios, and landmarks. A–C. Landmarks used to measure cheliceral length (CL), including (A) fixed finger apex to cheliceropeltidial condyle (Muma, 1951; Brookhart and Cushing, 2004); (B) fixed finger apex to anterolateral propeltidial lobe anterior margin, in direct line (i) or parallel to longitudinal axis (ii) of chelicera; and (C) fixed finger apex to propeltidium anterior margin. D. CL/CH ratio (CloudsleyThompson, 1961). E. CL/CW* ratio (asterisk indicates use of CW as defined in present contribution). F. A/ CP index (Brookhart and Muma, 1981, 1987; Muma and Brookhart, 1988). G. Fixed and movable (ventral) finger lengths from retrolateral interdigital condyle (ric) center to (applicable) finger apex. H. FN ratio (FNL/ FNH), i.e., fondal notch L/W or FN ratio sensu Brookhart and Muma (1981, 1987) and Muma and Brookhart (1988), and FL/FW ratio sensu Brookhart and Cushing (2004); and FNH/FFH ratio (FW/FFW) sensu Brookhart and Cushing (2004), based on finger to notch ratio (FF/FN) of Brookhart and Muma (1987), with numerator and denominator switched. I. CH/FFH ratio. Abbreviations: CH, cheliceral height; CL, cheliceral length; CP, chelicera-propeltidium length; CW, cheliceral height; FFH, fixed finger height; FFL, fixed finger length; FN, fondal notch; FNH, fondal notch height; FNL, fondal notch length; MFL, movable finger length; ric, retrolateral interdigital condyle.