Figure 2. SEM images of Polycopetta quadrispinata sp. n. valves. A and B male paratype (SUM-CO-2095) C and D male, paratype (SUM-CO-2096) E male, paratype (SUM-CO-2097) F female, paratype (SUM-CO-2105) G female paratype (SUM-CO-2106) H and I female, paratype (SUM-CO-2107) J female, paratype (SUM-CO-2108). A right external lateral view B left external lateral view C right internal lateral view D left internal lateral view E dorsal view F right external lateral view G left external lateral view H right internal lateral view I left internal lateral J dorsal view.