Deep-sea Cirripedia Thoracica (Crustacea) from the northeastern Atlantic collected by French expeditions
Author
Young, Paulo S.
Museu Nacional / UFRJ, Quinta da Boa Vista, 20940 - 040 Rio de Janeiro RJ (Brazil) psyoung @ acd. ufrj. br.
psyoung@acd.ufrj.br
text
Zoosystema
2001
23
4
705
756
journal article
6379
10.5281/zenodo.4689055
5aec84f2-b3a3-4f16-bb46-efec4dddcb9e
1638-9387
4689055
3B853248-623C-4344-BDD8-444040704ED2
Dichelaspis
sp.
(
Fig. 13D
)
MATERIALEXAMINED. — SEAMOUNT 2, stn CP 268,
34°22.03’N
,
30°23.14’W
,
2205 m
to
34°20.54’N
,
30°25.00’W
,
2145 m
,
1 specimen
, tl (cl) 20.0 (14.1) mm (
MNHN
Ci 2844).
REMARKS
The single full grown specimen, which at first view, I thought may be
D. thieli
. But some characters in the shape of the capitulum and reduction of its plates show it is probably a distinct species.
The capitulum is short, with its height less than two times its width and with a strongly curved carinal margin. The carina is strongly curved without a basal flattened projection. The scutum has an L-shape with a very thin and long basal arm and an occludent arm which enlarges apically. The peduncle is short and robust.
It is difficult to trace a reduction of the plates of
D. thieli
to attain the scutum and carina form observed in this specimen. Otherwise the proportion of the capitulum and peduncle is very different from the
D. thieli
.
All of the other species of
Dichelaspis
are very distinct from this specimen. Because there is only one specimen I prefer to maintain the identification as
Dichelaspis
sp., until more samples become available.