Shell: small to moderately small, solid, ovate , ranging from 15-23 mm.
Spire concealed. Teeth: 13 to 14 columellar teeth; 16 to 17 labral teeth.
Sculpture: smooth, porcelaneous.
Exterior colour colour white with 3 chocolate brown to black axial bands across the dorsum, edges tinged with orange; base and margins white.
Specimens
Hutchinson, Australia Size: mm Collected: 1999 found dead in 10m of water, also found one shell broken, obvoiusly eaten by something
Alexandra Headland, Australia Size: 20mm Collected: Unknown Dead collected.
Mudjimba Island, Australia Size: 22.17mm Collected: 2000 Collected from rocky reef at 15m by diver.
forma: latefasciata Schilder, 1930 Keppel Island, Australia Size: 23mm Collected: Unknown Under rocks on exposed reef. Low tide.
Lamont Reef, Australia Size: 16mm Collected: 2019 Under rocks on weather edge of reef. At low tide.
Swains Reef, Australia Size: 22.58mm Collected: Unknown Collected from coral reef by hand [low tide]. Dead collected
Uepi Point, Solomon Islands Size: 15mm Collected: 2018 Dead in sand on reef slope at about 10m
Uepi Is - Billy's point, Solomon Islands Size: mm Collected: 2002 found dead in 10m of water,
Hot Spot, Solomon Islands Size: mm Collected: 2000 animal had been dead a while as the shell is partially covered with white calcium deposits
Uepi Point, Solomon Islands Size: mm Collected: 1998 found dead on beach near coral reef. shell ihas lost its lustre, but banding and colouration is still evident
Horseshoe Reef, Papua New Guinea Size: mm Collected: 2001 found dead in sand on coral reef in 5m of water
The Hole, Papua New Guinea Size: mm Collected: 1984 on coral reef in coral crevise
forma: bitaeniata (Geret, 1903) Oval, more depressed; posterior extremity more produced; posterior columellar teeth more distinct forming elevations; dark dorsal zones narrow and often bordered with orange; white longitudinal lines absent. Rinca Island, Indonesia Size: 19.28mm Collected: Unknown No data.
Subspecies: Palmadusta asellus asellus (Linnaeus, 1758) Puerta Princessa, Philippines Size: 20.4mm Collected: Unknown Collected on intertidal reef by Local collectors.
Subspecies: Palmadusta asellus armadillo Bergonzoni, 2015 East Africa, Madagascar. Callous well developed on both sides reaching towards the dorsum; teeth shorter, labral teeth more numerous; dorsal zones broader with conspicuous orange band, white zones narrow; longitudinal lines promient. Zanzibar, Tanzania Size: 18mm Collected: Unknown No data.
