On the identities of the molluscan names described in A Short Zoology of Ta h i t i in the Society Islands by Anthony Curtiss in 1938 (Mollusca: Cephalopoda, Gastropoda)
Author
Low, Martyn E. Y.
Author
Tan, Siong Kiat
text
Zootaxa
2014
3764
3
394
400
journal article
46472
10.11646/zootaxa.3764.3.9
ee9b02df-1271-4e2a-835e-3f998c543975
1175-5326
226594
00D46BEF-8616-43AB-A6DE-01AFA532CC95
Turbo maoa
Curtiss, 1938
, a possible synonym of
Turbo setosus
Gmelin, 1791
Original description (p. 191).
“The
maóa
is a large sort of sea-snail, common on the barrier reef, and much used for food by the Indians. They break off its shell with a hammer, pick it clean, separate it from its hard knob, and put it in hollow bamboo stalks, with
taioro
sauce. It will keep in that way for several days. (
Taioro
sauce is the clean meat of a ripe coconut, grated fine, and seasoned with the juices squeezed from the heads of river shrimps.) Its shell is large and rounded, the spire, however, coming to a point. It is grayish-brown outside, white inside, and like mother-of-pearl under its outer covering. The opening is circle-shaped, and without teeth, and under the foot is a hard, round knob, like half a marble in shape, with which it closes the opening when it is inside. The outside of the outer lip of the opening it variegated with yellow and chestnut-color, and has elevated streaks, which, becoming less elevated, run on around the spire of the whole shell. The
maóa
is sometimes found on rocks close inshore, but more usually on the barrier-reef. (
Turbo maóa
. (Near Tautira.))”.
Identity.
The description of the operculum (hard, round knob, like half a marble) leaves no doubt that this is a species of the genus
Turbo
. Four
Turbo
species,
T
.
argyrostomus
Linnaeus, 1758
,
T. marmoratus
Linnaeus, 1758
,
T
.
petholatus
Linnaeus, 1758
, and
T
.
setosus
Gmelin, 1791
, have been recorded in the
French Polynesia
(
Tröndlé & Boutet 2009
). However,
T
.
marmoratus
would not have been seen by Curtiss as it was only introduced to the region during the 1960s (
Yamaguchi 1993
). The utility of this species for food was emphasized by Curtiss.
Turbo argyrostomus
and
T. setosus
happen to be the two species most commonly collected for food in the South Pacific (
Yamaguchi 1993
;
Poutiers 1998
), but Curtiss’s description is insufficient to clearly determine which. Based on our interpretation of the description,
Turbo maoa
is more likely to be conspecific with
Turbo setosus
Gmelin, 1791
, which is distinctly more round in shape and fits better with Curtiss’s description of a large rounded shell with a pointed spire as the shells of
T
.
argyrostomus
normally have distinctly angular whorls.
Turbo setosus
Gmelin, 1791
, is a widely-distributed Indo-West Pacific species (
Poutiers 1998
).