Wallaceago porostriatus Arsad, Witkowski, Luthfi & M.Rybak, sp. nov. (A–R) A–J light microscopy images K–R SEM images K–N external valve view O–R internal valve view L, M striation in mantle consists of 2–5 tiny areolae (white arrowhead, L), proximal and distal raphe ends bent in the same direction towards the ventral side (black arrowheads, L) M a presence of stauros (black arrowhead), ornamented raphe and the edge of the valve by a rabbet (white arrowheads) O–Q raphe straight with simple ends R distinct virgae on the mantle with unoccluded pores. Scale bar: 10 µm (A–J).