Gephyrotes nitidopunctatus Smitt 1868

• Main Authors: Martino, Emanuela Di, Rosso, Antonietta
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Bryozoa; Gymnolaemata; Cheilostomatida; Cribrilinidae; Gephyrotes; Gephyrotes nitidopunctatus; Norway; Hayward; Finnmark; Northern Norway
• Online Access: https://zenodo.org/record/6101456; https://doi.org/10.5281/zenodo.6101456

Gephyrotes nitidopunctatus (Smitt, 1868) (Figs 2–8; Table 1) Escharipora figularis forma nitido-punctata Smitt 1868: 4, pl. 24, figs 2–3. Cribrilina nitidopunctata: Smitt 1873: 22; Levinsen 1909: 159; Waters 1923: 564, pl. 18, figs 4–5; 1926: 438; Ryland 1963: 4. Gephyrotes nitidopunctata: Norman 1903: 101, pl. 8, figs 12–13; Nordgaard 1906: 84, pl. 1, fig. 7; 1917: 50; Canu & Bassler 1920: 300, figs 81 E, 85; 1929: 109, fig. 25; Lang 1922: 25, fig. 9; Prenant & Bobin 1966: 585, fig. 203; Kluge 1975: 468, fig. 246; Hayward & Ryland 1998: 316, fig. 111. Material examined. Holotype: SMNH 1770, Recent, Finnmark, northern Norway, encrusting a stone. Description. Colony unilaminar, multiserial, forming small irregular patch (Fig. 2). Ancestrula not observed; early autozooids similar to later ones but smaller (Fig. 2). Autozooids distinct, with deep interzooidal furrows, oval (mean L/W = 1.67), longer than broad. Gymnocyst smooth, narrow laterally, more extensive proximally; sometimes long 'tails' of gymnocyst developing proximally, giving zooid an irregular, elongated shape. Frontal shield relatively flat, formed by 8–12 costae, more often 9 (Figs 3, 5), not including two distalmost pairs participating in proximal peristomial complex. Costae 40–55 µm broad, widely separated by 2 intercostal pores, the peripheral one transversely elongated for two-thirds of costal length (50 µm), the central one much smaller (20 µm) and subcircular; 2 large circular pelmatidia on each costa. Proximal peristomial complex formed by conjunction of 2 elevated distalmost pairs of costae, one pair originating lateral to orifice, the second pair with elevated anterior bifurcations (Fig. 7). This complex generally with a semilunar intercostal lacuna (80–90 µm) and 2 elliptical lateral ones (55–65 µm) (Fig. 7). Primary orifice broader than long (130 x 200 µm), semicircular (Fig. 8); secondary orifice elliptical. Paired oral spines restricted to small periancestrular zooids (Fig. 5). Adventitious avicularia large, usually paired, ...