Halectinosoma latisetifera Clément & Moore 2007, SP. NOV.

• Main Authors: Clément, Michel, Moore, Colin G.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Hexanauplia; Harpacticoida; Ectinosomatidae; Halectinosoma; Halectinosoma latisetifera; Arctic
• Online Access: https://doi.org/10.5281/zenodo.5488996; http://treatment.plazi.org/id/876D87C6215E7307FF64F8C877F0FB23

HALECTINOSOMA LATISETIFERA SP. NOV. Type material: 1♀ holotype dissected on five slides (NHM1990.421), 2♀ paratypes on four slides (NHM1990.422 – 423), 2♀ paratypes in tubes (NHM1990.1213 – 1214), collected by grab from the North Sea (site S58). Other material examined: France: 3♀ in tubes (NHM1990.1215 – 1217), 1♀ on two slides (NHM1990.424), collected by grab from the subtidal, off Banyuls. Description of female holotype Length: Habitus 375 µm; sum of all somites 455 µm; cephalothorax 55 µm; genital double-somite 130 µm. Habitus fusiform (Fig. 4A). Cephalothorax gradually attenuating anteriorly. Rostrum broadly rounded and partially fused at base with cephalothorax and furnished with two small sensilla subapically. Labrum terminating in two spinous projections (Fig. 4B). Genital double-somite subdivided ventrally by a short transverse chitinous stripe and laterally by a suture. Penultimate somite with broadly rounded pseudoperculum. Caudal ramus (Fig. 4C, D). Much shorter than broad. Principal setation and general form as in H. pseudosarsi Clément and Moore. Somitic ornamentation (Fig. 4A, C, D). Body somites, apart from penultimate, sparsely furnished with sensilla and pores. Posterior margin of cephalothorax, first and second free thoracic somites unadorned. Posterior margin of third free thoracic somite and first urosomite finely spinulose. Genital double-somite with complex arrangement of rows of fine spinules and semi-incised subulate hyaline frill. Urosomite 4 with hyaline frill similar to preceding somite and furnished with one row of fine spinules dorsally and two rows ventrally. Penultimate somite with one spinular row and a fully incised subulate hyaline frill, which extends dorsally to pseudoperculum. Anal segment with posterior row of spinules, which become lappet-like dorsally. Antennule (Fig. 5A). Short and six-segmented. Principal setation and form as in H. pseudosarsi . Antenna (Fig. 5B). Coxa short. Basis with a short row of fine spinules along outer margin and a set of long setules at inner ...