FIGURES 20–24 in A survey of the Sumatran Ctenidae (Araneae). 4. A new species of Acantheis Thorell, 1891 with unique copulatory organs morphology

FIGURES 20–24. SEM photographs of bulb (20), tegular apophysis (21), epigyne (22) and ventral spine's locking mechanism in female's femorae I (23–24) of Acantheis kazantsevae sp. nov. Scale: 20=0.3 mm; 21–22=0.1 mm; 23–24=0.02 mm. Abbreviations: AE—embolic arm, AT—anterior arm of tegular apophysis, C—conductor, CO—copulatory opening, ET— embolic tip, PT—posterior arm of tegular apophysis, St—subtegulum, TA—tegular apophysis, TC—cavity of tegular apophysis, TE—prolateral extension.