Nereididae (Annelida: Phyllodocida) of the Persian Gulf and Gulf of Oman, including description of two new species and 11 new records
Author
Bonyadi-Naeini, Alieh
Author
Rastegar-Pouyani, Nasrullah
Author
Rastegar-Pouyani, Eskandar
Author
Glasby, Christopher J.
Author
Rahimian, Hassan
text
Zootaxa
2017
4244
1
91
117
journal article
36252
10.11646/zootaxa.4244.1.5
b88d009a-de10-45f2-a097-8a346a1dcae5
1175-5326
400448
32B4596D-43D8-4598-9B3C-D67F8066F549
Pseudonereis
sp. cf.
P. variegata
(
Grube, 1857
)
Nereis (Nereilepas) variegata
Grube, 1857
: 164
.
Pseudonereis variegata
.
Hartman 1959
: 279
;
Day 1965
: 19
;
Fishelson 1971
: 126
.
Material examined.
Iran, Persian Gulf:
Qeshm
Island-
West coast
of
Basaidu
, (
ZUTC
6148
)
;
Qeshm
Island-
Namakdan
,
1 specimen
(
ZUTC
6171
)
.
Description.
Material examined about 40 chaetigers. Posterior part of the body is missing. Color in alcohol is light. Prostomium longer than wide. Longest tentacular cirri extend back to chaetiger 6. Jaws with dentate cutting edge, black/brown serrated with 6 teeth. Maxillary ring of pharynx with paragnaths, arranged as follows: Area I = 1 conical paragnath; Areas II– IV arranged in regular comb-like rows; Area II = 24–25 p-bar paragnaths in four rows; Area III = 60 p-bar paragnaths in four rows; Area IV = 50 p-bar paragnaths in 5 rows, additional cones and 4–6 pbars towards the jaws. Area V = 1 conical paragnath, Area VI = 1 large shield-shaped bar, Area VII–VIII = 22, conical paragnaths and p-bars in two alternating rows. Prechaetal notopodial lobe absent, acicular process absent. Ventral notopodial ligule stout, rounded; in posterior chaetigers digitiform. Neuropodial lobe with two ligules in anterior chaetigers; acicular ligule longer than ventral neuropodial ligule. Neuropodial postchaetal lobe present, in posterior chaetigers triangular. Ventral neuropodial ligule of anterior chaetigers well developed, smaller in length than acicular neuropodial ligule throughout body. Ventral cirrus 0.5 times shorter than ventral neuropodial ligule. Anterior neurochaetae, dorsal fascicle, are homogomph spinigers and heterogomph falcigers, blades serrated. Posterior neurochaetae, dorsal fascicle are similar to anterior one.
Remarks.
The material described in the present study is similar to both
Pseudonereis trimaculata
from the Gulf of
Oman
described by
Yousefi
et al
. (2011)
and to
P. variegata
by
Bakken (2007)
in some characters. However, there are notable differences, for example, the present material has a large single conical paragnath in Area V, while
P. trimaculata
has three.
Pseudonereis trimaculata
has black spots on the parapodia, which has been used by
Horst (1924)
to distinguish
P. trimaculata
from other described
Pseudonereis
taxa. The present specimen lacks the black pigment spots.
Distribution.
Suez Canal, Red Sea (
Wehe & Fiege 2002
),
Rio de Janeiro
,
Brazil
. South America, Atlantic coast (
Bakken 2007
).