Rhamphostomella townsendi Osburn 1952

• Main Authors: Grischenko, Andrei V., Gordon, Dennis P., Taylor, Paul D., Kuklinski, Piotr, Denisenko, Nina V., Spencer-Jones, Mary E., Ostrovsky, Andrew N.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Bryozoa; Gymnolaemata; Cheilostomatida; Umbonulidae; Rhamphostomella; Rhamphostomella townsendi; Bering Sea; Pacific; Amchitka; Amchitka Island; Rat Islands; Alaska; Aleutian Islands
• Online Access: https://zenodo.org/record/6520701; https://doi.org/10.5281/zenodo.6520701

Rhamphostomella townsendi Osburn, 1952 (Fig. 21) Rhamphostomella townsendi Osburn, 1952, p. 430, pl. 51, figs 2, 3. Material examined. Holotype: USNM 11032, record name Che981–2, colony encrusting sponge, US Fish Commission Collection, RV Albatross, Stn 5695, 26 April 1911, Santa Rosa Island, SW of Channel Islands, Southern California, Pacific Ocean, 33°33.0ʹ N, 120°17.0ʹ W, depth 977 m. ZIRAS 1/50117, colony encrusting branch of erect bryozoan Microporina okadai, PIBOC Collection, RV Akademik Oparin, 14th Expedition, Stn 5, 2 August 1991, southeast off Medny Island, Commander Islands, Bering Sea, 54°12.0ʹ N, 168°37.3ʹ E, depth 569 m, Sigsbee trawl, collector A.V. Smirnov. ZIRAS 2/50118, one colony encrusting sponge, PIBOC Collection, RV Akademik Oparin, 14th Expedition, Stn 5, 2 August 1991, southeast off Medny Island, Commander Islands, Bering Sea, 54°12.0ʹ N, 168°37.3ʹ E, depth 569 m, Sigsbee trawl, collector A.V. Smirnov. Specimen AL–WP–0019–0022, M.H. Dick Collection, one colony, Alaska Fisheries Science Center and National Marine Fisheries Service Collection, FV Sea Storm, Haul 190, Stn 114–21, 23 July 2004, coastal waters of Amchitka Island, Rat Islands, western Aleutian Islands, Bering Sea, 51°51.6ʹ N, 178°27.8ʹ E, depth 224– 235 m, collector M.H. Dick. Measurements. ZIRAS 1/50117, Medny Island, Commander Islands, Bering Sea (Fig. 21C, F, H, I, K). ZL, 0.63–0.98 (0.76 ± 0.07) (n = 20). ZW, 0.45–0.65 (0.53 ± 0.06) (n = 20). ZD, 0.35–0.38 (n = 2). OrL, 0.18–0.22 (0.20 ± 0.02) (n = 10). OrW, 0.20–0.25 (0.22 ± 0.02) (n = 10). OeL, 0.22–0.30 (0.26 ± 0.02) (n = 10). OeW, 0.35–0.40 (0.37 ± 0.02) (n = 10). Av(s)L, 0.12–0.17 (0.14 ± 0.02) (n = 10). P(m)N, 12–19 (16) (n = 10). P(oe)N, 24–41 (34) (n = 6). Description. Colonies encrusting, multiserial, unilaminar (Fig. 21A), small, irregular in form, attaining about 5 mm in maximal dimension, light-brown to beige when dry. Zooids of medium size, rhombic, hexagonal to oval, sometimes tapering proximally (Fig. 21D, G, J), arranged in quincunx, demarcated by fine ...