Contributions to the taxonomy of the Normanellidae (Copepoda, Harpacticoida): description of a new genus from the Brazilian continental shelf and re-assignment of Pseudocletodes vararensis Scott & Scott, 1893 (ex Nannopodidae)
Author
Kihara, Terue Cristina
Author
Huys, Rony
text
Zootaxa
2009
2233
1
38
journal article
10.5281/zenodo.190348
09d08381-504d-469c-a203-7b22a11ce54e
1175-5326
190348
Genus
Pseudocletodes
Scott & Scott, 1893
Diagnosis.
Normanellidae
. Body elongate, subcylindrical, without clear distinction between prosome and urosome. Genital double-somite with internal transverse chitinous ribs laterally and dorsally. Anal somite with well developed rounded operculum. Genital field with median genital slit; vestigial P6 with 2 setae; copulatory pore large. Caudal rami lamelliform and elongate, with virtually straight outer margin and convex inner margin; with 7 setae; setae IV–V moderately developed, setiform.
Rostrum bell-shaped. Antennule 6-segmented in female, with large pinnate spines on segments 5 and 6, and an aesthetasc on segment 3; 7-segmented and subchirocer in male (after
Scott and Scott (1893: Plate XII,
Fig. 12
)
, with geniculation between segments 5 and 6, and aesthetasc on segment 5; acrothek unconfirmed. Antennary allobasis with 2 abexopodal setae; exopod with 3–4 setae. Mandible with biramous palp; basis with 1 seta; exopod 1-segmented, defined at base, with 1 seta; endopod fused to basis, with 4 setae. Maxillule with 2 basal endites, proximal endite with 2 and distal endite with 3 setae; exopod with 2 setae; endopod represented by 2 setae. Maxillary syncoxa with 3 endites; accessory armature on allobasis consisting of 1 seta; endopod represented by 3 setae. Maxilliped prehensile; with unarmed syncoxa; palmar margin of basis without ornamentation; endopod drawn out into claw bearing 1 long seta.
P1 endopod absent. P4 exp-3 with 1 inner seta. P2–P4 enp-1 without inner seta. P2–P4 enp-2 with 2 inner setae; P2 enp-2 outer spine absent. P3 enp-2 inner and apical setae well developed in male but shorter than in female. P2–P4 spine and seta formulae as follows:
Exopod |
Endopod |
P1 |
0.1.0 23 |
absent |
P2 |
0.1.123 |
0.220 |
P3 |
0.1.223 |
0.221 |
P4 |
0.1.123 |
0.221 |
Male fifth pair of legs not fused medially, endopodal lobe with 3 setae; exopod with 4 setae. Male sixth pair of legs asymmetrical, with dextral and sinistral configurations, with 3 setae each. Single egg-sac.
Type
and only species:
Pseudocletodes vararensis
Scott & Scott, 1893
(fixed by monotypy in the subgenus
Cletodes
(
Pseudocletodes
)).