Fig. 4

Bauplans and folding processes of the hemispermatophore capsule, diagrammatic representations complemented by camera-lucida drawings with indication of the corresponding area. a, ‘No-fold’ pattern, lateral aspect. b, ‘One-fold’ pattern, arrows indicate the direction of the folding delimiting the subex and tectum, lateral aspect. c, ‘Two-folds’ pattern, anterior aspect. d, ‘Three-folds’ pattern observed in Uroctonus mordax Thorell, 1876, anterior aspect, arrows show the invagination of the tectum. e–f, ‘Four-folds’ pattern, anterior (e) and lateral (f) aspects, arrow 1 shows the invagination of the basal capsular edge and arrow 2 indicates the extension of the hemisolenos