Proposal of Fiersiphontina gen. nov., redescription of Fiersiphontina sensillata comb. nov., and new data on the distribution of Spiniferaphonte (Copepoda, Harpacticoida, Laophontidae)
Author
Bruno, Maria Cristina
Author
Cottarelli, Vezio
text
Zootaxa
2011
2809
1
19
journal article
10.5281/zenodo.277103
53a1e43e-49df-4f7a-b762-6a39edc73805
1175-5326
277103
Spiniferaphonte
cf.
ornata
Gheerardyn & Fiers, 2007
(
Fig. 8
)
Material examined.
One female (
DSAUT
126) mounted on one slide, from washout of coral sand and fragments, hand-collected by snorkeling at
5 m
depth, in front of beach near Sabang Village where
Fiersiphontina sensillata
comb. nov
.
was collected, Eastern Mindoro Province,
Philippines
,
13° 31’ 17” N
;
120° 58’ 23” E
,
20 March 1998
. Material collected by V. Cottarelli.
Description of female.
Total body length, measured from anterior margin of rostrum to posterior margin of caudal rami = 711 μm. Habitus, body ornamentation, rostrum A1 (
Fig. 8
A), A2, mouth parts, P1, as in
S. ornata
.
Anal operculum: with 11 tooth-like processes (
Fig. 8
B).
Caudal rami (
Fig. 8
B): armature as in
S. ornata
but seta V proportionally longer and thinner, one tubepore adjacent to seta VI (arrowed in figure).
P2 (
Fig. 8
C): exopod one-segmented narrowing at tip, with three apical plumose setae, two innermost shorter and of same length; one strong bipinnate spine on outer distal corner.
P3 (
Fig. 8
D): basis with one pore; exopod three-segmented, first and second segments with one very strong bipinnate spine on outer distal corner; third segment with three apical and one inner pinnate setae of subequal length, inner seta inserted at midlength of segment.
P4 (
Fig. 8
E): exopod three-segmented, first segment with very strong bipinnate spine on outer distal corner; second segment with long bipinnate spiniform seta on outer distal corner; third segment with four pinnate setae of different length.
P5 (
Fig. 8
F): exopod shorther than in
S. ornata
, with similar armature but three subequal distal pinnate setae and one longer and pinnate subapical outer seta. Endopodal lobe with four setae as in
S. ornata
, but less developed.
Remarks
. Only the characters which distinguish this specimen from the original description are given above.
Spiniferaphonte
cf.
ornata
differs in body length (711 µm vs 564–610 µm); the morphology and armature of P2-P5 and anal operculum (stronger spines on the P2-P4 exopods, one additional seta on 3-exp P3, a much longer P4 endopod, and an anal operculum with more processes on the distal margin in
Spiniferaphonte
cf.
ornata
). The caudal rami and P5 have additional differences in setal/spinal length (the caudal rami have an additional secretory tube pore, not recorded in
Spiniferaphonte ornata
). These differences might be large enough to attribute
Spiniferaphonte
cf.
ornata
to a new species, but the availability of only one specimen does not allow us to evaluate the possible intraspecific variability, or to describe the male morphology. As a consequence, we postpone a more precise definition of the taxonomic status of this specimen until we are able to collect more material.