Paranaiara, Kihara, Terue Cristina & Huys, Rony, 2009

Kihara, Terue Cristina & Huys, Rony, 2009, 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), Zootaxa 2233, pp. 1-38 : 4-5

publication ID 10.5281/zenodo.190348


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gen. nov.

Genus Paranaiara gen. nov.

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 straight outer margin and convex inner margin; with 7 setae; setae IV–V rudimentary conical spines.

Rostrum triangular. Antennule 6-segmented in female, with pinnate spines on segments 2, 3, 5 and 6, and an aesthetasc on segment 3; 7-segmented and subchirocer in male, with geniculation between segments 5 and 6, and an aesthetasc on segment 5; acrothek consisting of 2 basally fused setae. Antennary allobasis with 2 abexopodal setae; exopod with 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 represented by 2 setae, distal endite by 3 distal setae; exopod with 2 setae; endopod represented by 2 setae. Maxillary syncoxa with 3 endites; accessory armature on allobasis consisting of 2 setae; endopod represented by 3 setae. Maxilliped prehensile, with unarmed syncoxa; palmar margin of basis without ornamentation; endopod drawn out into a claw bearing 1 long seta.

P1 endopod 2-segmented, not prehensile; enp-1 as long as enp-2, unarmed; enp-2 with 1 lateral and 2 distal setae. P4 exp-3 with 2 inner setae. P2–P4 enp-1 with inner seta. P2–P4 enp-2 with 3, 2 and 1 inner setae, respectively; P2 enp-2 outer spine absent. P3 enp-2 outer apical seta well developed in male but shorter than in female. P2–P4 spine and seta formulae as follows:

Male fifth pair of legs fused medially, endopodal lobe with 2 setae and 2 spines; exopod with 4 setae. Male sixth pair of legs asymmetrical, with dextral and sinistral configurations, with 3 setae each. Single eggsac.

Type and only species: Paranaiara inajae gen. et sp. nov.

Etymology. The generic name is derived from the Tupí-Guaraní (a South American Indian language) parana (meaning sea) and iara (meaning lady). Gender: feminine.

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