About Plaxiphora caelata (Reeve, 1847)
Plaxiphora caelata is a cryptic chiton species that reaches a maximum length of 45 millimetres, though most adult individuals measure 20 to 25 millimetres long. The shape and colour of its eight valves are highly variable. The head valve has eight ribs intersected by chevron-patterned wrinkles. Each of the median valves has a single radial rib on each side, while the small tail valve is nearly triangular. All valves range in colour from cream to dull grey-green, marked with streaks or blotches of dark green, brown, orange, or white. Its leathery girdle is wide along the sides and narrow at both ends, and it often bears short bristles; the girdle is typically dark brown with lighter coloured blotches. On individuals found in the North Island, the dorsal surface is sometimes covered by filamentous algae. Like other species in the genus Plaxiphora, this species prefers open rock surfaces on wave-exposed shores, as well as crevices or the bases of shaded overhangs located in the low intertidal zone.
