Triphora alboapicata 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 : 47-50

Taxon classification Animalia Caenogastropoda Triphoridae

Triphora alboapicata Thiele, 1930 Figure 16

Triphora alboapicata Thiele, 1930: 577, plate IV, figure 35.

Type specimens.

Holotype: ZMB/Moll no. 67490, fixed by monotypy.

Type locality.

"Station 3 (Sharks Bay)" (Western Australia).

Original description.

Eine schale von Station 3 (Sharks Bay) ist durch ihre anfangs weiße, nachher schwarze Färbung ausgezeichnet. Die aus 2½ Windungen bestehende Embryonalschale ist oben stumpf, dann etwas kantig, die herablaufenden Fäden sind undeutlich; die folgenden 8 Windungen haben 2 Knotenreihen, zwischen die sich auf den unteren Windungen allmählich noch eine dritte Reihe einschiebt, die Endwindung hat 6 Reihen; die Mündung ist oben spitzwinklig. Höhe 4 mm, Durchmesser 1,3 mm.

Translation.

One shell from Station 3 (Shark Bay) is in its starting whorls white, while the lower whorls are black. The first 2½ embryonic whorls are not pointed, a bit angulated, the axial sculpture is unclear; the following eight whorls have two rows of tubercles, gradually a third cord develops on the lower whorls, between the first two; the last whorl has six threads; the aperture has an acute angle on the upper part. Height 4 mm, diameter 1.3 mm.

Diagnosis.

Holotype height 4.0 mm. Shell pupoid. The teleoconch has seven flat whorls, which have three tubercled spiral cords; the second cord appears later along the spire, and is visible on the sixth whorl and well developed only on the last one. A very fine suprasutural cord also present. The last whorl has a fourth tubercled cord. The base has two spiral cords: the first is tubercled, while the second is almost smooth. On the peristome, additional spiral cords appear between the main ones. Paucispiral apex of two whorls; the first whorl has a keel on the periphery, while on the second, axial riblets are also present. Teleoconch dark brown, protoconch and the first two whorls white.