Boroecia borealis G.O. Sars 1866

• Main Authors: Stępień, A., Błachowiak-Samołyk, K., Krawczuk, M., Angel, M. V.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Ostracoda; Halocyprida; Halocyprididae; Boroecia; Boroecia borealis; Lofoten; North East Atlantic; Svalbard
• Online Access: https://doi.org/10.5281/zenodo.6490271; http://treatment.plazi.org/id/D723883BFFB7FFE534BCFB67FC69BF18

2.1. Boroecia borealis (G.O. Sars, 1866) (Figures 1–3) Synonymy: 1866 Conchoecia borealis Sars: 119. 1896 Conchoecia borealis— Brady & Norman: 685-6, Pl. 61, 1–19. 1906 Conchoecia borealis— Vavra: 48, Pl. 4, 64. 1928 Conchoecia borealis— Sars: 22, Pl. XI–XII. 1980 Conchoecia borealis— Deevey & Brooks: 114, Fig. 36 A–L, 37 A–G. 1973 Boroecia borealis —Poulsen: 166–169, Fig. 84 A– I. 1981 Boroecia borealis— Angel: 543–61. 2008 Boroecia borealis— Bashmanov & Chavtur: 341–347. 1994 Boroecia borealis —Richter: 61–65. 1995 Boroecia borealis —Chen & Lin: 124, Fig. 146, 1–7. 2008 Boroecia borealis— Angel et al . 2015 Boroecia borealis— Chavtur et al. : 168–85, Fig. 12 –20. The species was originally described by G. O. Sars (1866) from material collected in the vicinity of 68°N, 12°E off the Lofoten Islands. We nominate this approximate position as the type locality for the species. However, in the absence of good material from locations close to this type locality, we cannot designate any syntypes. Male. Dimensions of the carapace and the lengths relative to the carapace of the principal setae on the first and second antennae are shown in Table 3 and compared to the characteristics of the other species. Carapace (Figures 1 A,B). Length 2.13 ± 0.071 mm (see Table 1) In the North-East Atlantic, there is a trend for lengths to be greater at higher latitudes (the mean length of specimens from off Svalbard was 2.30 mm compared to 2.05 mm from 44°N) (Table 4). The shoulder vaults are strongly arched and sharply edged, and the posterior margins of the vaults curve smoothly on to the dorsal margin. There is a criss-crossing diamond pattern of ornamentation, which is clearest in the anterior ventral region of the carapace, but becomes obscure posteriorly. The RAG opens slightly above the PVC and on both valves immediately dorsal to the RAG, there is a large group of lateral glands. Close to the PDC and ~ 0.29 mm below the hinge is a further group of lateral glands that open on the posterior margin on each valve. ...