Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Museum fuer Naturkunde, Berlin, with lectotype designations
Author
Albano, Paolo G.
Author
Bakker, Piet A. J.
text
Zoosystematics and Evolution
2016
92
1
33
78
http://dx.doi.org/10.3897/zse.92.5936
journal article
http://dx.doi.org/10.3897/zse.92.5936
1860-0743-1-33
71689C6BD5AB48CB87858B43999F6379
Taxon classification Animalia Caenogastropoda Triphoridae
Triphora capensis Thiele, 1925
Figure 5
Triphora
capensis
Thiele, 1925: 128 (94), plate XXII (X), figures 18 and 18a.
Type specimens.
Lectotype: ZMB/Moll no. 109269a, here designated from station 101 (Algoa Bay). Paralectotype A: ZMB/Moll no. 109269b; further 11 paralectotypes: ZMB/Moll no. 109269.
Type locality.
"Stationen 81 (
Grosse
Fischbucht), 95 (Cap Agulhas), 100 (Francis-Bucht) und 101 (Algoa-Bucht)" (South Africa).
Original description.
Stationen 81 (
Grosse
Fischbucht), 95 (Cap Agulhas), 100 (Francis-Bucht) und 101 (Algoa-Bucht). Einige Schalen, z. T. unvollkommen erhalten, kann ich auf keine bekannte Art beziehen, sie
gehoeren
in die Gruppe der
Triphora perversa
,
von
der sie deutlich verschieden sind. Die etwas
braeunlichen
Schalen sind hoch
kegelfoermig
, aus 11 kaum
gewoelbten
Windungen gebildet, deren erste abgerundet und mit 3 Reifen skulptiert einen etwas abgestumpften Apex bilden,
waehrend
die
uebrigen
auβer
den 3 Reifen noch herablaufende Falten zeigen, die an den Schnittpunkten deutliche Knoten bilden, an der Naht ist noch ein glatter Reifen sichtbar. Letzte Windung mit einem
grossen
geraden Spindelfortsatz und mit 4 Reifen an der Unterseite, die in einem stumpfen Winkel zum oberen Teil steht;
Muendung
ziemlich
gross
, abgerundet
rautenfoermig
.
Hoehe
8 mm, Durchmesser 2,25 mm.
Translation.
Stations 81 (
"Grosse
Fischbucht"), 95 (Cape Agulhas), 100 (Francis Bay) and 101 (Algoa Bay). I obtained some imperfect shells, which I cannot relate with any known species; they belong to the group of
Triphora perversa
, but they are clearly different. The slightly brownish shells are high and conical, and have 11 slightly inflated whorls, the first whorl is rounded and sculptured by 3 cords, forming an obtuse apex, while the following whorls have axial ribs which bear tubercles at the intersection with the spiral cords; at the suture a further smooth thread is visible. The last whorl has a big straight siphonal canal and with 4 cords on the base, the last whorl has a blunt angle between the lower and upper part; aperture rather large, diamond-shaped. Height 8 mm, diameter 2.25 mm.
Diagnosis.
Lectotype height 8 mm. Shell conical, with rather flat whorls. Teleoconch of nine whorls, which have three tubercled spiral cords, present since the first teleoconch whorl. A fourth suprasutural smooth cord is also present. The base has five smooth spiral cords. The peristome is not complete in the type material, but it does not seem to bear bifurcated spiral cords. Paucispiral large apex of two whorls with three large spiral cords which are initially smooth and then become tubercled. Colour brownish, with the first spiral cord on whorls paler (colour pattern clearly visible in paralectotype A, Fig. 5 I-K).
Remarks.
The sample from station 81 contains specimens which are broken or juvenile and difficult to assign to any species. At least one specimen is certainly not
Triphora capensis
, because it bears a planktotrophic apex. Station 81 is probably located in Agulhas Bank and not in Angola as the geographic coordinates would suggest (
Kilburn 1996
) (see Materials and methods).
Figure 5.
Triphora capensis
Thiele, 1925, Station 101 (Algoa Bay). A-H. Lectotype, ZMB/Moll no. 109269a: front (A-B), side (C), back (D), protoconch (E-F), protoconch side (G) and peristome (H). I-K. Paralectotype A, same stations as lectotype, ZMB/Moll no. 109269b: front (I), side (J), back (K). L, N. Original figure in
Thiele 1925
. M. Original label. Scale bar: A-D: 1 mm, E-F: 0.2 mm, G-H: 1 mm, I-K: 1 mm.