Reteporella obscura Denisenko 2022, n. sp.

• Main Author: Denisenko, Nina V.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Bryozoa; Gymnolaemata; Cheilostomatida; Phidoloporidae; Reteporella; Reteporella obscura; Paamiut
• Online Access: https://doi.org/10.5281/zenodo.6504110; http://treatment.plazi.org/id/93797F2BFFB55E0678E04A7AD125B3D6

Reteporella obscura n. sp. (Fig. 2; Table 1) Material examined. Holotype: ZIN1 /50742, one colony;Stn 2016_PA_2_151 (64.52786668° N, ˗ 54.7776999791463° W; 277 m; T 3.934 °C); collected by BEAMTRAWL, MT Paamiut , fish-shrimp trawl assessment survey. July 2016. Paratype: ZIN 2 / 50747; colony fragment; Stn 2016_PA_1_16 (64.35196667° N; ˗ 53.8765166600545° W; 165 m; T 1.575 °C); collected by BEAMTRAWL, MT Paamiut , fish-shrimp trawl assessment survey. July 2016. Diagnosis. Colony reticulate, broadly fan-shaped; fenestrulae large; different levels of granulation on frontal and abfrontal surfaces. Trabeculae of variable length, with 2‒3 series of alternating zooids, doubling at bifurcations. Zooids flat, with 3‒5 large marginal pores; marginal zooids near fenestrulae with 5‒6 marginal pores. Orifice semicircular, approximately as wide as long with rounded condyles and slightly prominent proximal edge; distal rim smooth with a well-developed row of denticles in its lower part. Spines paired, one on each side of orifice at about mid-length; peristome asymmetric with a widely open pseudosinus; larger lobe with a small circular avicularium directed terminally-proximally relative to the zooidal surface; rostrum finely toothed, crossbar complete, columella absent, cystid invisible, mandible edge raised. Frontal avicularia sporadic, oval and relatively small, crossbar complete, columella absent, palate forming a more or less developed shelf, distal uncalcified area semicircular. Abfrontal avicularia rare, circular, distal part raised with fine denticulation. Ovicells longer than wide with long fissure, and relatively narrow labellum. Etymology. Latin “ obscura ” (unclear), alluding to the possibility of misidentification with closely related species of Reteporella . Description. The colony is 40–50 mm high, broadly fan-shaped. The fenestrulae are mainly oval, twice as long as wide, commonly 1.1 x 0.53 mm (Fig. 2A, B; Table 1). The trabeculae (0.85 x 1.05 mm) consisting of two to three alternating, longitudinal series of ...