Stromboidea

• Strombidae
  • Maculastrombus
    • Maculastrombus depauperatus (Dautzenberg & Bouge, 1933)

Original Description of Strombus (Canarium) floridus var. depauperata by Dautzenberg & Bouge, 1933, p. 296:

• Cette variété diffère du Str. floridus par sa forme plus allongée, sa spire plus courte, l'absence de tubercules sur le haut du dernier tour, le bourrelet externe de son labre moins développé et enfin par sa coloration blanche ou jaunâtre avec cinq bandes transversales de petites taches d'un roux très clair. L'intérieur de son ouverture est blanc et non pas rosé comme celle du floridus.

Locus typicus: Makatea!; Apataki!; Motutunga!.

Reports

Jeanette & Scott Johnson about Maculastrombus depauperatus (Dautzenberg & Bouge, 1933) on Kwajalein Atoll:

• "Canarium maculatum are very common in very shallow and intertidal reef habitats in the Marshalls. They are often overlooked due to their small size of around 15mm."

All Photos of Kwajalein Atoll-specimens courtesy Scott & Jeanette Johnson, Kwajalein Atoll

Bob Abela on Canarium maculatum from Guam

Maculastrombus depauperatus'' (Dautzenberg & Bouge, 1933); Tanguissan Beach, Guam, USA; Photo Bob Abela

I found this little guy (with another) while diving off Tanguissan Beach (May 2018). It was at about 40 ft, exposed, on the reef and partially covered by a thin layer of sand. While not a rare, I've only encountered them sporadically on Guam. The photograph is taken from my small aquarium. I haven't measured the shell but it's ~15mm.

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Neye Island Channel, Guam Island, Mariana Islands, Micronesia, USA, North Pacific Ocean; in shallow sand, on reef, 2 feet, snorkel; 19,6 mm; 8/1977; Coll. Richard Salisbury

• Comment R. Salisbury: "This Canarium species is not very common on Guam Island."

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); South Tipalao, Guam Island, Mariana Islands, Micronesia, USA, North Pacific Ocean; 5-20 ft in silt & rubble in sand trenches; 1985; 1.r: 21,2 mm, 2.r: 15,5 mm; 3.r: 14,7 mm, 4.r: 13,7 mm; Coll. Paul Merrill

• Comment P. Merrill: "I collected a total of nine years on Guam Island, 1975-1980 & 1982-1986. I only found six Canarium maculatum"

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Laura Beach, Westend of Majuro Atoll, Marshall Islands; at low tide on beach; t:19,3 mm, b: 18 mm; 2025: Coll. Francesco Giovanoli

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Tuamotu Archipelago, French Polynesia; 29 mm; Coll. Frank Nolf no. 01911b

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Mataiva Atoll, Tuamotu Archipelago, French Polynesia; 16,3 mm; Coll. Ulrich Wieneke

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Tikehau Atoll, Tuamotu Archipelago, French Polynesia; 17,7 mm; Coll. Ulrich Wieneke

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Takarora, Tuamotu Archipelago, French Polynesia; 21,9 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Mataiva, Tuamotu Archipelago, French Polynesia; 19 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Takapoto, Tuamotu Archipelago, French Polynesia; 18,5 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Makemo, Tuamotu Archipelago, French Polynesia; 17,5 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Tuamotu Archipelago, French Polynesia; 18,5 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Fangataufa, Tuamotu Archipelago, French Polynesia; t: 24 mm, b: 24,5 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); French Polynesia; t: 14 mm, m: 15 mm, b: 15 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); French Polynesia; 23 mm; Coll. Virgilio Liverani

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Suva, Fiji; 30,5 mm; Coll. Peter Bedbur

Maculastrombus depauperatus (Dautzenberg & Bouge, 1933); Marquesas Island; t: 14 mm, b: 23,5 mm; Coll. Virgilio Liverani

References

• Dautzenberg P. & Bouge J.L. (1933). Les mollusques testacés marins des Etablissements Français de l'Océanie. Journal de conchyliologie. 77: 41-108; 145-326; 351-469.
• Liverani V., Wieneke U. & Kronenberg G.C. (2021). Another triplet: The case of Strombus maculatus G. B. Sowerby II, 1842 (Gastropoda: Caenogastropoda). Conchylia. 51(3-4): 55-73.
• Liverani V., Dekkers A.M. & Maxwell S.J. (2021). Resolving phylogenetic and classical nomenclature: A revision of Canarium Schumacher, 1817 (Mollusca, Neostromboidae, Strombidae). The Festivus. 53(1): 26-43.