Triforis regia Thiele, 1925

Albano, Paolo G. & Bakker, Piet A. J., 2016, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Museum fuer Naturkunde, Berlin, with lectotype designations, Zoosystematics and Evolution 92 (1), pp. 33-78 : 57-59

publication ID

https://dx.doi.org/10.3897/zse.92.5936

publication LSID

lsid:zoobank.org:pub:71689C6B-D5AB-48CB-8785-8B43999F6379

persistent identifier

https://treatment.plazi.org/id/F6257696-F356-460B-DA7C-5BA145F40C9B

treatment provided by

Zoosystematics and Evolution by Pensoft

scientific name

Triforis regia Thiele, 1925
status

 

Taxon classification Animalia Caenogastropoda Triphoridae

Triforis regia Thiele, 1925 Figure 25

Triphora regia Thiele, 1925: 130 (96), plate XXII (X), figure 23.

Type specimens.

Lectotype: ZMB/Moll no. 109274a, here designated. Paralectotype A: ZMB/Moll no. 109274b.

Type locality.

"Station 245 (5°27,9' südl. Br., 39°18,8' östl. L., 463 m Tiefe, im Sansibar-Kanal)", [Zanzibar Channel, East Africa].

Original description.

Zwei Schalen von Station 245 (5°27,9' südl. Br., 39°18,8' östl. L., 463 m Tiefe, im Sansibar-Kanal) zeigen ähnlich wie Argyropeza divina einen starken Glanz in Verbindung mit einer gelblichweißen Färbung, die Spitze ist braun, aber unvollständig erhalten, mit herablaufenden Fäden und 2 Spiralreifen fein skulptiert; die eine Schale hat 19 Windungen, von denen noch 2 zum braunen Teil gehören, sie ist schlank getürmt, mit geraden Seiten. Die Skulptur besteht aus 3 ungleich starken Knotenreihen, die oberste ist am schwächsten, die unterste am stärksten, die Knoten liegen schräg übereinander und sind etwas von oben zusammengedrückt; auf der letzten Windung werden die Knoten schwächer und zwischen der 2. und 3. Reihe schiebt sich eine schwache ein. Der glatte Reifen der letzten Windung bildet eine starke Kante, unter der ein deutlicher und ein undeutlicher Reifen sichtbar sind. Spindelfortsatz gebogen, Mundrand vorgezogen, unten ein fast geschlossenes kurzes Rohr bildend. Höhe 11 mm, Durchmesser 2 mm.

Translation.

Two shells from station 245 (5°27.9'S, 39°18.8'E, 463 m depth, in Zanzibar Channel) show similarities with Argyropeza divina due to its glossy appearance and yellowish/white colouring; the protoconch is brown, but incomplete, sculptured with two spiral keels and axial riblets; one shell has up to 19 whorls, of which two belongs to the protoconch, slender, with flat whorls. The teleoconch is sculptured with three rows of tubercles of unequal strength, the first row is the least pronounced, the third row is the most pronounced, the tubercles lay diagonally one above the other and are slightly compressed on the upper side, on the last whorl the tubercles become less pronounced and a fourth row develops between the second and the third row. The smooth spiral cord on the last whorl forms a strong angle, under which a well developed and an underdeveloped cord are visible. The siphonal canal is curved, the peristome expanded, under which a short siphonal canal is present. Height 11 mm, diameter 2 mm.

Diagnosis.

Lectotype height 10.3 mm. Shell very slender and pointed. Teleoconch of 17 whorls, which have two spiral cords with pointed tubercles. A subsutural weakly tubercled spiral cord is present, while a fine suprasutural smooth cord is present, but poorly visible. The last whorl has a fourth smooth strong cord, and the base is smooth. The peristome has additional weakly tubercled spiral cords. Apex in the lectotype incomplete, but protoconch clearly multispiral. The two whorls which are present have two strong keels and axial riblets. Teleoconch colour light yellowish, with the very first whorls pure white; protoconch brown.

Remarks.

It can be easily distinguished from the following Triforis sceptrum because of the multispiral protoconch.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Family

Triphoridae

Genus

Triforis