Roughened Mitre

Vexillum exasperatum

Vexillum exasperatum, known as the roughened mitre, is a small sea snail with a shell size ranging from 10 mm to 29 mm. The shell is turreted and features a high spire, containing seven whorls. It is characterized by eight or nine ribs, a dark-brown coloration, and distinctive banding at the sutures of the upper whorls. The outer lip has nodulose striae, and the columella displays four plaits. Occasionally, specimens may appear entirely dark-brown, which can help distinguish them from similar species. This species is found in various tropical regions, including the Red Sea, Indian Ocean near Chagos Atoll, Madagascar, and the Pacific Ocean off the Philippines, Fiji, New Caledonia, and the Solomon Islands. It has also been recorded off the northern and eastern coasts of Australia. The roughened mitre typically inhabits benthic environments and is often found at depths shallower than 40 meters, with most records occurring at these depths. Vexillum exasperatum is a non-broadcast spawner, meaning it does not release eggs into the water column but likely engages in more direct reproductive methods. Encounters with this species during dives may involve observing its unique shell structure and behavior as it navigates its habitat. Conservation status for this species is currently listed as Not Evaluated, indicating that further research may be needed to assess its population dynamics and threats.