Triphora adela Thiele, 1930

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 : 44

Taxon classification Animalia Caenogastropoda Triphoridae

Triphora adela Thiele, 1930 Figure 12

Triphora adela Thiele, 1930: 577, plate IV, figure 38.

Type specimens.

Holotype: ZMB/Moll no. 67493, fixed by monotypy.

Type locality.

"Station 25 (Sharks Bay)" (Western Australia).

Original description.

Eine Schale von Station 25 (Sharks Bay) hat etwa 11 mäßig schnell zunehmende Windungen, sie ist daher ziemlich breit, im ganzen hell bräunlich, auf der Endwindung sind die Zwischenräume zwischen den Knoten und hauptsächlich die Unterseite dunkelbraun. Die Embryonalwindungen sind mit einer Mittelkante und herablaufenden Fäden skulptiert, die folgenden Windungen mit 2 Knotenreihen zwischen denen ein allmählich stärker und knotig werdender Reifen gelegen ist, die Unterseite der Endwindung hat 3 glatte Reifen, die Mündung ist oben spitzwinklig. Höhe 3 mm, Durchmesser 0,9 mm.

Translation.

A single shell from Station 25 (Shark Bay), which has about 11 whorls which increase moderately fast in size, it is therefore fairly broad; the shell is light brownish, but dark brown between the tubercles on the last whorl and on the base. The embryonal whorls have a spiral keel in the middle and axial riblets, the following whorls have two rows of tubercles and between them a tubercled row develops and gradually becomes stronger; the base has three smooth cords, the aperture has an acute angle on the upper part. Height 3 mm, diameter 0.9 mm.

Diagnosis.

Lectotype height is 3.0 mm. Shell conical, with flat whorls. The teleoconch has six whorls with three tubercled spiral cords; the second is present since the first teleoconch whorl, but it gains its full size only on the last whorl. Suture deep, a very fine suprasutural smooth cord is visible. The last whorl has a fourth almost smooth spiral cord, and the base has two further smooth cords. A posterior sinus is well visible on the peristome. Multispiral apex of five whorls; the first whorl is smooth, while the others bear axial riblets and a strong keel. Protoconch whorls brownish at the beginning, then white like the first teleoconch whorls. The rest of the teleoconch is light brownish with white tubercles. The last whorl has the two first cords on brown background, the third is white, and the base deep brown.